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Seo S, Oh IH, Chang ST. On-Chip Micro-Supercapacitor with High Areal Energy Density Based on Dielectrophoretic Assembly of Nanoporous Metal Microwire Electrodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311726. [PMID: 38497508 DOI: 10.1002/smll.202311726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/29/2024] [Indexed: 03/19/2024]
Abstract
Advances in the Internet of Things (IoT) technology have driven the demand for miniaturized electronic devices, prompting research on small-scale energy-storage systems. Micro-supercapacitors (MSCs) stand out in this regard because of their compact size, high power density, high charge-discharge rate, and extended cycle life. However, their limited energy density impedes commercialization. To resolve this issue, a simple and innovative approach is reported herein for fabricating highly efficient on-chip MSCs integrated with nanoporous metal microwires formed by dielectrophoresis (DEP)-driven gold nanoparticle (AuNP) assembly. Placing a water-based AuNP suspension onto interdigitated electrodes and applying an alternating voltage induces in-plane porous microwire formation in the electrode gap. The DEP-induced AuNP assembly and the gold microwire (AuMW) growth rate can be adjusted by controlling the applied alternating voltage and frequency. The microwire-integrated MSC (AuMW-MSC) electrically outperforms its unmodified counterpart and exhibits a 30% larger electrode area, along with 72% and 78% higher specific and areal capacitances, respectively, than a microwire-free MSC. Additionally, AuMW-MSC achieves maximum energy and power densities of 3.33 µWh cm-2 and 2629 µW cm-2, respectively, with a gel electrolyte. These findings can help upgrade MSCs to function as potent energy-storage devices for small electronics.
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Affiliation(s)
- Seungdeok Seo
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - In Hyeok Oh
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Suk Tai Chang
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
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2
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Pradhan L, Kamila S, Padhy G, Das DP, Jena BK. Emerging Vanadium-Doped Cobalt Chloride Carbonate Hydroxide for Flexible Electrochromic Micro-Supercapacitor: Charged-State Prediction from RGB Input by ANN Model. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401238. [PMID: 38602230 DOI: 10.1002/smll.202401238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/25/2024] [Indexed: 04/12/2024]
Abstract
Multifunctional devices integrated with electrochromic and supercapacitance properties are fascinating because of their extensive usage in modern electronic applications. In this work, vanadium-doped cobalt chloride carbonate hydroxide hydrate nanostructures (V-C3H NSs) are successfully synthesized and show unique electrochromic and supercapacitor properties. The V-C3H NSs material exhibits a high specific capacitance of 1219.9 F g-1 at 1 mV s-1 with a capacitance retention of 100% over 30 000 CV cycles. The electrochromic performance of the V-C3H NSs material is confirmed through in situ spectroelectrochemical measurements, where the switching time, coloration efficiency (CE), and optical modulation (∆T) are found to be 15.7 and 18.8 s, 65.85 cm2 C-1 and 69%, respectively. A coupled multilayer artificial neural network (ANN) model is framed to predict potential and current from red (R), green (G), and blue (B) color values. The optimized V-C3H NSs are used as the active materials in the fabrication of flexible/wearable electrochromic micro-supercapacitor devices (FEMSDs) through a cost-effective mask-assisted vacuum filtration method. The fabricated FEMSD exhibits an areal capacitance of 47.15 mF cm-2 at 1 mV s-1 and offers a maximum areal energy and power density of 104.78 Wh cm-2 and 0.04 mW cm-2, respectively. This material's interesting energy storage and electrochromic properties are promising in multifunctional electrochromic energy storage applications.
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Affiliation(s)
- Lingaraj Pradhan
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Swagatika Kamila
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India
| | - Ganeswara Padhy
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India
| | - Debi Prasad Das
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Bikash Kumar Jena
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
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3
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Periyasamy T, Asrafali SP, Lee J. High-Performance Supercapacitor Electrodes from Fully Biomass-Based Polybenzoxazine Aerogels with Porous Carbon Structure. Gels 2024; 10:462. [PMID: 39057485 PMCID: PMC11275366 DOI: 10.3390/gels10070462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 07/03/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
In recent years, polybenzoxazine aerogels have emerged as promising materials for various applications. However, their full potential has been hindered by the prevalent use of hazardous solvents during the preparation process, which poses significant environmental and safety concerns. In light of this, there is a pressing need to explore alternative methods that can mitigate these issues and propel the practical utilization of polybenzoxazine aerogels. To address this challenge, a novel approach involving the synthesis of heteroatom self-doped mesoporous carbon from polybenzoxazine has been devised. This process utilizes eugenol, stearyl amine, and formaldehyde to create the polybenzoxazine precursor, which is subsequently treated with ethanol as a safer solvent. Notably, the incorporation of boric acid in this method serves a dual purpose: it not only facilitates microstructural regulation but also reinforces the backbone strength of the material through the formation of intermolecular bridged structures between polybenzoxazine chains. Moreover, this approach allows ambient pressure drying, further enhancing its practicability and environmental friendliness. The resultant carbon materials, designated as ESC-N and ESC-G, exhibit distinct characteristics. ESC-N, derived from calcination, possesses a surface area of 289 m2 g-1, while ESC-G, derived from the aerogel, boasts a significantly higher surface area of 673 m2 g-1. Furthermore, ESC-G features a pore size distribution ranging from 5 to 25 nm, rendering it well suited for electrochemical applications such as supercapacitors. In terms of electrochemical performance, ESC-G demonstrates exceptional potential. With a specific capacitance of 151 F g-1 at a current density of 0.5 A g-1, it exhibits superior energy storage capabilities compared with ESC-N. Additionally, ESC-G displayed a more pronounced rectangular shape in its cyclic voltammogram at a low voltage scanning rate of 20 mV s-1, indicative of enhanced electrochemical reversibility. The impedance spectra of both carbon types corroborated these findings, further validating the superior performance of ESC-G. Furthermore, ESC-G exhibits excellent cycling stability, retaining its electrochemical properties even after 5000 continuous charge-discharge cycles. This robustness underscores its suitability for long-term applications in supercapacitors, reaffirming the viability of heteroatom-doped polybenzoxazine aerogels as a sustainable alternative to traditional carbon materials.
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Affiliation(s)
| | | | - Jaewoong Lee
- Department of Fiber System Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongbuk, Gyeongsan 38541, Republic of Korea; (T.P.); (S.P.A.)
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Khatoon N, Subedi B, Chrisey DB. Synthesis of Silicon and Germanium Oxide Nanostructures via Photonic Curing; a Facile Approach to Scale Up Fabrication. ChemistryOpen 2024; 13:e202300260. [PMID: 38308174 PMCID: PMC11230936 DOI: 10.1002/open.202300260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/24/2024] [Indexed: 02/04/2024] Open
Abstract
Silicon and Germanium oxide (SiOx and GeOx) nanostructures are promising materials for energy storage applications due to their potentially high energy density, large lithiation capacity (~10X carbon), low toxicity, low cost, and high thermal stability. This work reports a unique approach to achieving controlled synthesis of SiOx and GeOx nanostructures via photonic curing. Unlike conventional methods like rapid thermal annealing, quenching during pulsed photonic curing occurs rapidly (sub-millisecond), allowing the trapping of metastable states to form unique phases and nanostructures. We explored the possible underlying mechanism of photonic curing by incorporating laws of photophysics, photochemistry, and simulated temperature profile of thin film. The results show that photonic curing of spray coated 0.1 M molarity Si and Ge Acetyl Acetate precursor solution, at total fluence 80 J cm-2 can yield GeOx and SiOx nanostructures. The as-synthesized nanostructures are ester functionalized due to photoinitiated chemical reactions in thin film during photonic curing. Results also showed that nanoparticle size changes from ~48 nm to ~11 nm if overall fluence is increased by increasing the number of pulses. These results are an important contribution towards large-scale synthesis of the Ge and Si oxide nanostructured materials which is necessary for next-generation energy storage devices.
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Affiliation(s)
- Najma Khatoon
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118
| | - Binod Subedi
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118
| | - Douglas B Chrisey
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118
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5
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Ye S, Xu A, Cao W, Zhao Z, Zhang S, Qin Y. Oxidative MnO 2 Template Assisted Electrochemical Fabrication of Graphene/Polypyrrole Supercapacitor Electrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11460-11469. [PMID: 38780242 DOI: 10.1021/acs.langmuir.4c00316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Improving the morphological structure of active materials is a reliable strategy for the fabrication of high-performance supercapacitor electrodes. In this study, we introduce a feasible approach to constructing the graphene/polypyrrole (PPy) composite film implanted onto the current collector through a two-step electrochemical deposition method utilizing MnO2 as an intermediary template. The reduced graphene oxide (rGO) hydrogel film is first hydrothermally grown on a carbon cloth (CC) substrate to obtain a porous rGO@CC electrode on which MnO2 is electrodeposited. Then the as-prepared rGO/MnO2@CC electrode is subjected to the electrochemical polymerization of pyrrole, with MnO2 acting as an oxidizing template to facilitate the oxidative polymerization of pyrrole, ultimately yielding an rGO/PPy composite film on CC. The PPy synthesized via this methodology exhibits a distinctive interconnected structure, resulting in superior electrochemical performance compared with the electrode with PPy directly electrodeposited on rGO@CC. The optimized electrode achieves an impressive specific capacitance of 583.6 F g-1 at 1 A g-1 and retains 83% of its capacitance at 20 A g-1, with a capacitance loss of only 9.5% after 5000 charge-discharge cycles. The corresponding all-solid-state supercapacitor could provide a high energy density of 22.5 Wh kg-1 and a power density of 4.6 kW kg-1, with a capacitance retention of 82.7% after 5000 charge-discharge cycles. Furthermore, the device also demonstrates good flexibility performance upon bending at 90 and 180°. This work presents an innovative method for the preparation of carbon material/conducting polymer electrodes with specific structural characteristics and superior performance.
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Affiliation(s)
- Shuyan Ye
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Aizhen Xu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Weifeng Cao
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Zhiyi Zhao
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Shaoqing Zhang
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yujun Qin
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
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Periyasamy T, Asrafali SP, Islam M, Bari GAKMR, Lee J. Polymer Composite Hydrogel Based on Polyvinyl Alcohol/Polyacrylamide/Polybenzoxazine Carbon for Use in Flexible Supercapacitors. Polymers (Basel) 2024; 16:1463. [PMID: 38891410 PMCID: PMC11174713 DOI: 10.3390/polym16111463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/17/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
Polymer gels are cross-linked polymer networks swollen by a solvent. These cross-linked networks are interconnected to produce a three-dimensional molecular framework. It is this cross-linked network that provides solidity to the gel and helps to hold the solvent in place. The present work deals with the fabrication of polybenzoxazine carbon (PBzC)-based gels that could function as a solid electrode in flexible supercapacitors (SCs). With the advantage of molecular design flexibility, polybenzoxazine-based carbon containing different hetero-atoms was synthesized. A preliminary analysis of PBzC including XRD, Raman, XPS, and SEM confirmed the presence of hetero-atoms with varying pore structures. These PBz-carbons, upon reaction with polyvinyl alcohol (PVA) and acrylamide (AAm), produced a composite polymer hydrogel, PVA/poly (AAm)/PBzC. The performance of the synthesized hydrogel was analyzed using a three-electrode system. PVA/poly (AAm)/PBzC represented the working electrode. The inclusion of PBzC within the PVA/poly (AAm) matrix was evaluated by cyclic voltammetry and galvanostatic charge/discharge measurements. A substantial increase in the CV area and a longer charge/discharge time signified the importance of PBzC inclusion. The PVA/poly (AAm)/PBzC electrode exhibited larger specific capacitance (Cs) of 210 F g-1 at a current density of 0.5 A g-1 when compared with the PVA/poly (AAm) electrode [Cs = 92 F g-1]. These improvements suggest that the synthesized composite hydrogel can be used in flexible supercapacitors requiring light weight and wearability.
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Affiliation(s)
- Thirukumaran Periyasamy
- Department of Fiber System Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (T.P.); (S.P.A.)
| | - Shakila Parveen Asrafali
- Department of Fiber System Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (T.P.); (S.P.A.)
| | - Mobinul Islam
- Department of Energy & Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea;
| | - Gazi A. K. M. Rafiqul Bari
- School of Mechanical Smart and Industrial Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea
| | - Jaewoong Lee
- Department of Fiber System Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea; (T.P.); (S.P.A.)
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7
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Zhang A, Zhang Q, Fu H, Zong H, Guo H. Metal-Organic Frameworks and Their Derivatives-Based Nanostructure with Different Dimensionalities for Supercapacitors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303911. [PMID: 37541305 DOI: 10.1002/smll.202303911] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/21/2023] [Indexed: 08/06/2023]
Abstract
With the urgent demand for the achievement of carbon neutrality, novel nanomaterials, and environmentally friendly nanotechnologies are constantly being explored and continue to drive the sustainable development of energy storage and conversion installations. Among various candidate materials, metal-organic frameworks (MOFs) and their derivatives with unique nanostructures have attracted increasing attention and intensive investigation for the construction of next generation electrode materials, benefitting from their unique intrinsic characteristics such as large specific surface area, high porosity, and chemical tunability as well as the interconnected channels. Nevertheless, the poor electrochemical conductivity severely limits their application prospects, hence a variety of nanocomposites with multifarious structures have been designed and proposed from different dimensionalities. In this review, recent advances based on MOFs and their derivatives in different dimensionalities ranging from 1D nanopowders to 2D nanofilms and 3D aerogels, as well as 4D self-supporting electrodes for supercapacitors are summarized and highlighted. Furthermore, the key challenges and perspectives of MOFs and their derivatives-based materials for the practical and sustainable electrochemical energy conversion and storage applications are also briefly discussed, which may be served as a guideline for the design of next-generation electrode materials from different dimensionalities.
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Affiliation(s)
- Aitang Zhang
- Institute for Graphene Applied Technology Innovation, College of Materials Science and Engineering, Collaborative Innovation Centre for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Qingdao University, Qingdao, 266071, China
| | - Quan Zhang
- Institute for Graphene Applied Technology Innovation, College of Materials Science and Engineering, Collaborative Innovation Centre for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Qingdao University, Qingdao, 266071, China
| | - Hucheng Fu
- Fujian Provincial Key Laboratory of Fire Retardant Materials, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Hanwen Zong
- Institute for Graphene Applied Technology Innovation, College of Materials Science and Engineering, Collaborative Innovation Centre for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Qingdao University, Qingdao, 266071, China
| | - Hanwen Guo
- Key Laboratory of Automobile Materials, Ministry of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, China
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Minyawi BA, Vaseem M, Alhebshi NA, Al-Amri AM, Shamim A. Printed Electrodes Based on Vanadium Dioxide and Gold Nanoparticles for Asymmetric Supercapacitors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2567. [PMID: 37764596 PMCID: PMC10535297 DOI: 10.3390/nano13182567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023]
Abstract
Printed energy storage components attracted attention for being incorporated into bendable electronics. In this research, a homogeneous and stable ink based on vanadium dioxide (VO2) is hydrothermally synthesized with a non-toxic solvent. The structural and morphological properties of the synthesized material are determined to be well-crystalline monoclinic-phase nanoparticles. The charge storage mechanisms and evaluations are specified for VO2 electrodes, gold (Au) electrodes, and VO2/Au electrodes using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The VO2 electrode shows an electrical double layer and a redox reaction in the positive and negative voltage ranges with a slightly higher areal capacitance of 9 mF cm-2. The VO2/Au electrode exhibits an areal capacitance of 16 mF cm-2, which is double that of the VO2 electrode. Due to the excellent electrical conductivity of gold, the areal capacitance 18 mF cm-2 of the Au electrode is the highest among them. Based on that, Au positive electrodes and VO2 negative electrodes are used to build an asymmetric supercapacitor. The device delivers an areal energy density of 0.45 μWh cm-2 at an areal power density of 70 μW cm-2 at 1.4 V in the aqueous electrolyte of potassium hydroxide. We provide a promising electrode candidate for cost-effective, lightweight, environmentally friendly printed supercapacitors.
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Affiliation(s)
- Bashaer A. Minyawi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammad Vaseem
- Integrated Microwave Packaging Antennas and Circuit Technology (IMPACT) Lab, Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Nuha A. Alhebshi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Amal M. Al-Amri
- Department of Physics, College of Science and Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia
| | - Atif Shamim
- Integrated Microwave Packaging Antennas and Circuit Technology (IMPACT) Lab, Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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9
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Chen L, Zhao W, Chen H, Tao K, Li G, Han L. Zeolitic Imidazolate Framework-Derived Zn/Co-S@Ni(OH) 2 Nanoarrays with Excellent Energy Storage and Electrocatalytic Performance. Inorg Chem 2023; 62:14300-14309. [PMID: 37595027 DOI: 10.1021/acs.inorgchem.3c01692] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
The design and development of high-performance electrochemical electrode materials are crucial for energy storage and conversion systems. This work reports a facile preparation of a self-supported Zn/Co-S@Ni(OH)2 array electrode in which a Zn/Co-S nanosheet is derived from a leaf-like zeolitic imidazolate framework (Zn/Co-ZIF-L). The core-shell structure provides multiple benefits such as enhanced electrical conductivity, an abundance of exposed active sites, and strong electronic interactions between Zn/Co-S and ultra-thin Ni(OH)2 nanosheets, facilitating faster charge transfer. Consequently, Zn/Co-S@Ni(OH)2 demonstrates remarkable electrochemical characteristics as an electrode material for supercapacitors with an area capacitance of 12.9 F cm-2 at a current density of 2 mA cm-2 in 2 M KOH. The assembled asymmetric supercapacitor device achieves a high energy density of 0.95 mW h cm-2, while showing excellent longevity with a retention of 90.9% over 5000 cycles. Additionally, the Zn/Co-S@Ni(OH)2 arrays demonstrate significant oxygen evolution reaction activity with an overpotential of 242 mV at 10 mA cm-2 in 1 M KOH and significant stability for more than 100 h. This work provides a valuable approach for synthesizing bifunctional electrode materials for both energy storage and electrocatalysis applications.
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Affiliation(s)
- Linli Chen
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Wenna Zhao
- School of Biological and Chemical Engineering, Ningbotech University, Ningbo, Zhejiang 315100, China
| | - Hao Chen
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Kai Tao
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Guochang Li
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Lei Han
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China
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Sarfraz B, Mehran MT, Shahzad F, Hussain S, Naqvi SR, Khan HA, Mahmood K. Bifunctional CuS/Cl-terminated greener MXene electrocatalyst for efficient hydrogen production by water splitting. RSC Adv 2023; 13:22017-22028. [PMID: 37483669 PMCID: PMC10359762 DOI: 10.1039/d3ra02581k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 07/09/2023] [Indexed: 07/25/2023] Open
Abstract
Metal sulfides and 2D materials are the propitious candidates for numerous electrochemical applications, due to their superior conductivity and ample active sites. Herein, CuS nanoparticles were fabricated on 2D greener HF-free Cl-terminated MXene (Ti3C2Cl2) sheets by the hydrothermal process as a proficient electrocatalyst for the hydrogen evolution reaction (HER) and overall water splitting. CuS/Ti3C2Cl2 showed an overpotential of 163 mV and a Tafel slope of 77 mV dec-1 at 10 mA cm-2 for the HER. In the case of the OER, CuS/Ti3C2Cl2 exhibited an overpotential of 334 mV at 50 mA cm-2 and a Tafel slope of 42 mV dec-1. Moreover, the assembled CuS/Ti3C2Cl2||CuS/Ti3C2Cl2 electrolyzer delivered current density of 20 mA cm-2 at 1.87 V for overall water splitting. The CuS/Ti3C2Cl2 electrocatalyst showed excellent stability to retain 96% of its initial value for about 48 hours at 100 mA cm-2 current density. The synthesis of CuS/Ti3C2Cl2 enriches the applications of MXene/metal sulfides in efficient bifunctional electrocatalysis for alkaline water splitting.
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Affiliation(s)
- Bilal Sarfraz
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) H-12 Campus Islamabad 44000 Pakistan
| | - Muhammad Taqi Mehran
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) H-12 Campus Islamabad 44000 Pakistan
| | - Faisal Shahzad
- Department of Metallurgy and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences (PIEAS) Islamabad 45650 Pakistan
| | - Sajjad Hussain
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University Seoul 05006 Republic of Korea
| | - Salman Raza Naqvi
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) H-12 Campus Islamabad 44000 Pakistan
| | - Hassnain Abbas Khan
- Clean Combustion Research Center, King Abdullah University of Science and Technology Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Khalid Mahmood
- Department of Chemical & Polymer Engineering, University of Engineering & Technology Lahore Faisalabad Campus, Khurrianwala Faisalabad Pakistan
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11
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Xiao X, Zheng Z, Zhong X, Gao R, Piao Z, Jiao M, Zhou G. Rational Design of Flexible Zn-Based Batteries for Wearable Electronic Devices. ACS NANO 2023; 17:1764-1802. [PMID: 36716429 DOI: 10.1021/acsnano.2c09509] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The advent of 5G and the Internet of Things has spawned a demand for wearable electronic devices. However, the lack of a suitable flexible energy storage system has become the "Achilles' Heel" of wearable electronic devices. Additional problems during the transformation of the battery structure from conventional to flexible also present a severe challenge to the battery design. Flexible Zn-based batteries, including Zn-ion batteries and Zn-air batteries, have long been considered promising candidates due to their high safety, eco-efficiency, substantial reserve, and low cost. In the past decade, researchers have come up with elaborate designs for each portion of flexible Zn-based batteries to improve the ionic conductivities, mechanical properties, environment adaptabilities, and scalable productions. It would be helpful to summarize the reported strategies and compare their pros and cons to facilitate further research toward the commercialization of flexible Zn-based batteries. In this review, the current progress in developing flexible Zn-based batteries is comprehensively reviewed, including their electrolytes, cathodes, and anodes, and discussed in terms of their synthesis, characterization, and performance validation. By clarifying the challenges in flexible Zn-based battery design, we summarize the methodology from previous investigations and propose challenges for future development. In the end, a research paradigm of Zn-based batteries is summarized to fit the burgeoning requirement of wearable electronic devices in an iterative process, which will benefit the future development of Zn-based batteries.
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Affiliation(s)
- Xiao Xiao
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Zhiyang Zheng
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Xiongwei Zhong
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Runhua Gao
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Zhihong Piao
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Miaolun Jiao
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Guangmin Zhou
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People's Republic of China
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12
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High-performance solid-state asymmetric supercapacitor based on Ti3C2Tx MXene/VS2 cathode and Fe3O4@rGO hydrogel anode. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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K Lebechi A, Ipadeola AK, Eid K, Abdullah AM, Ozoemena KI. Porous spinel-type transition metal oxide nanostructures as emergent electrocatalysts for oxygen reduction reactions. NANOSCALE 2022; 14:10717-10737. [PMID: 35861592 DOI: 10.1039/d2nr02330j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Porous spinel-type transition metal oxide (PS-TMO) nanocatalysts comprising two kinds of metal (denoted as AxB3-xO4, where A, B = Co, Ni, Zn, Mn, Fe, V, Sm, Li, and Zn) have emerged as promising electrocatalysts for oxygen reduction reactions (ORRs) in energy conversion and storage systems (ECSS). This is due to the unique catalytic merits of PS-TMOs (such as p-type conductivity, optical transparency, semiconductivity, multiple valence states of their oxides, and rich active sites) and porous morphologies with great surface area, low density, abundant transportation paths for intermediate species, maximized atom utilization and quick charge mobility. In addition, PS-TMOs nanocatalysts are easily prepared in high yield from Earth-abundant and inexpensive metal precursors that meet sustainability requirements and practical applications. Owing to the continued developments in the rational synthesis of PS-TMOs nanocatalysts for ORRs, it is utterly imperative to provide timely updates and highlight new advances in this research area. This review emphasizes recent research advances in engineering the morphologies and compositions of PS-TMOs nanocatalysts in addition to their mechanisms, to decipher their structure-activity relationships. Also, the ORR mechanisms and fundamentals are discussed, along with the current barriers and future outlook for developing the next generation of PS-TMOs nanocatalysts for large-scale ECSS.
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Affiliation(s)
- Augustus K Lebechi
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg 2050, South Africa.
| | | | - Kamel Eid
- Gas Processing Center (GPC), College of Engineering, Qatar University, Doha 2713, Qatar.
| | | | - Kenneth I Ozoemena
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg 2050, South Africa.
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14
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Mao B, Xu D, Meng T, Cao M. Advances and challenges in metal selenides enabled by nanostructures for electrochemical energy storage applications. NANOSCALE 2022; 14:10690-10716. [PMID: 35861338 DOI: 10.1039/d2nr02304k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of nanomaterials and their related electrochemical energy storage (EES) devices can provide solutions for improving the performance and development of existing EES systems owing to their high electronic conductivity and ion transport and abundant embeddable sites. Recent progress has demonstrated that metal selenides are attracting increasing attention in the field of EES because of their unique structures, high theoretical capacities, rich element resources, and high conductivity. However, there are still many challenges in their application in EES, and thus the use of nanoscale metal selenide materials in commercial devices is limited. In this review, we summarize recent advances in the nanostructured design of metal selenides (e.g., zero-, one-, two-, and three-dimensional, and self-supported structures) and present their advantages in terms of EES performance. Moreover, some remarks on the potential challenges and research prospects of nanostructured metal selenides in the field of EES are presented.
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Affiliation(s)
- Baoguang Mao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
| | - Dan Xu
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
| | - Tao Meng
- College of Science, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Minhua Cao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
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15
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Zhao L, Lei S, Tang C, Tu Q, Rao L, Liao H, Zeng W, Xiao Y, Cheng B. Self-supported electrode based on two-dimensional NiPS3 for supercapacitor application. J Colloid Interface Sci 2022; 616:401-412. [DOI: 10.1016/j.jcis.2022.02.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 02/11/2022] [Accepted: 02/19/2022] [Indexed: 12/22/2022]
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16
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He B, Zhang Q, Pan Z, Li L, Li C, Ling Y, Wang Z, Chen M, Wang Z, Yao Y, Li Q, Sun L, Wang J, Wei L. Freestanding Metal-Organic Frameworks and Their Derivatives: An Emerging Platform for Electrochemical Energy Storage and Conversion. Chem Rev 2022; 122:10087-10125. [PMID: 35446541 PMCID: PMC9185689 DOI: 10.1021/acs.chemrev.1c00978] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
![]()
Metal–organic
frameworks (MOFs) have recently emerged as
ideal electrode materials and precursors for electrochemical energy
storage and conversion (EESC) owing to their large specific surface
areas, highly tunable porosities, abundant active sites, and diversified
choices of metal nodes and organic linkers. Both MOF-based and MOF-derived
materials in powder form have been widely investigated in relation
to their synthesis methods, structure and morphology controls, and
performance advantages in targeted applications. However, to engage
them for energy applications, both binders and additives would be
required to form postprocessed electrodes, fundamentally eliminating
some of the active sites and thus degrading the superior effects of
the MOF-based/derived materials. The advancement of freestanding electrodes
provides a new promising platform for MOF-based/derived materials
in EESC thanks to their apparent merits, including fast electron/charge
transmission and seamless contact between active materials and current
collectors. Benefiting from the synergistic effect of freestanding
structures and MOF-based/derived materials, outstanding electrochemical
performance in EESC can be achieved, stimulating the increasing enthusiasm
in recent years. This review provides a timely and comprehensive overview
on the structural features and fabrication techniques of freestanding
MOF-based/derived electrodes. Then, the latest advances in freestanding
MOF-based/derived electrodes are summarized from electrochemical energy
storage devices to electrocatalysis. Finally, insights into the currently
faced challenges and further perspectives on these feasible solutions
of freestanding MOF-based/derived electrodes for EESC are discussed,
aiming at providing a new set of guidance to promote their further
development in scale-up production and commercial applications.
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Affiliation(s)
- Bing He
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Qichong Zhang
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China.,Division of Nanomaterials and Jiangxi Key Lab of Carbonene Materials, Jiangxi Institute of Nanotechnology, Nanchang 330200, China
| | - Zhenghui Pan
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117574 Singapore
| | - Lei Li
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China
| | - Chaowei Li
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, China
| | - Ying Ling
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Zhixun Wang
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Mengxiao Chen
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China
| | - Zhe Wang
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Yagang Yao
- College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Qingwen Li
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Litao Sun
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China
| | - John Wang
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117574 Singapore.,Institute of Materials Research and Engineering, A*Star, Singapore 138634, Singapore
| | - Lei Wei
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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17
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Inbamani MB, Dass AJ, Inbamani R. Carboxymethyl Cellulose Grafted on Mesoporous Cobalt Oxide Milieu: Synthesis, Formation Mechanism and Electrochemical Features. ChemistrySelect 2022. [DOI: 10.1002/slct.202103936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Manohara Babu Inbamani
- Advanced Energy Materials Laboratory Korea Institute of Energy Research (AEML) Daejeon, Republic of Korea
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18
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Han J, Li D, Jiang L, Fang D. Co-MnO 2 Nanorods for High-Performance Sodium/Potassium-Ion Batteries and Highly Conductive Gel-Type Supercapacitors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105510. [PMID: 35083883 PMCID: PMC8948560 DOI: 10.1002/advs.202105510] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Indexed: 06/08/2023]
Abstract
Manganese dioxide (MnO2 ) is considered as a strong candidate in the field of new-generation electronic equipment. Herein, Co-MnO2 has excellent electrochemical properties in tests as the cathode electrode of sodium-ion batteries and potassium-ion batteries. The rate performance remains at 50.2 mAh g-1 at 200 mA g-1 for sodium-ion batteries. X-ray diffraction (XRD) is utilized to evaluate the crystal structure transition from Co0.2 -MnO2 to NaMnO2 with discharge to 1 V, proving that Co-doping does indeed facilitate the acceleration of ion transport and support layer spacing to stabilize the structure of MnO2 . Subsequently, highly conductive (0.0848 S cm-1 ) gel-type supercapacitors are prepared by combining Co0.2 -MnO2 , potassium hydroxide (KOH), and poly(vinyl alcohol) (PVA) together. Co0.2 -MnO2 provides capacitive behavior and strengthens the hydrogen bonds between molecules. KOH acts as an ion crosslinker to enhance hydrogen bond and as electrolyte to transport ions. 5 wt% Co0.2 -MnO2 @KOH/PVA has superb mechanical endurance, appreciable electrical conductivity, and ideal capacitive behavior. The quasi-solid-state supercapacitor demonstrates stabilized longevity (86.5% at 0.2 mA cm-3 after 500 cycles), which can greatly promote the integration of flexible energy storage fabric devices.
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Affiliation(s)
- Jun Han
- Key Laboratory of Bio‐Inspired Smppart Interfacial Science and TechnologyMinistry of EducationSchool of ChemistryBeihang UniversityBeijing100191China
| | - Dian‐sen Li
- Key Laboratory of Bio‐Inspired Smppart Interfacial Science and TechnologyMinistry of EducationSchool of ChemistryBeihang UniversityBeijing100191China
- Beijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing100191China
| | - Lei Jiang
- Key Laboratory of Bio‐Inspired Smppart Interfacial Science and TechnologyMinistry of EducationSchool of ChemistryBeihang UniversityBeijing100191China
| | - Dai‐ning Fang
- State Key Laboratory for Turbulence & Complex SystemsCollege of EngineeringPeking UniversityBeijing100871China
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19
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Zhao X, Tao K, Han L. Self-supported metal-organic framework-based nanostructures as binder-free electrodes for supercapacitors. NANOSCALE 2022; 14:2155-2166. [PMID: 35107472 DOI: 10.1039/d1nr08284a] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Metal-organic frameworks (MOFs), an interesting class of functional inorganic materials, have recently emerged as suitable electrode materials or templates/precursors of electrode materials for supercapacitors (SCs). The key in utilizing MOF-based electrode materials is to address the low electronic conductivity and poor stability issues. Therefore, the rational design and fabrication of self-supported binder-free electrodes is considered the most promising strategy to address these challenges. In this review, we summarize the recent advances in the design and manufacture of self-supported MOF-based nanostructures and their use as binderless electrodes for SCs, especially over the last five years. The synthesis strategies for constructing pristine MOFs, MOF composites and MOF derivative arrays are overviewed. By highlighting the advantages and challenges of each class of electrode materials, we hope that this review will provide some insights into the rational design of MOF-based electrode materials to promote the future development of this highly exciting field.
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Affiliation(s)
- Xueyan Zhao
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Kai Tao
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Lei Han
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
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20
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Liu XX, Chen C, He Q, Kong Q, Blackwood DJ, Li NW, Yu L, Chen JS. Self-Supported Transition Metal-Based Nanoarrays for Efficient Energy Storage. CHEM REC 2022; 22:e202100294. [PMID: 35138030 DOI: 10.1002/tcr.202100294] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/17/2022] [Indexed: 01/11/2023]
Abstract
Rechargeable batteries and supercapacitors are currently considered as promising electrochemical energy storage (EES) systems to address the energy and environment issues. Self-supported transition metal (Ni, Co, Mn, Mo, Cu, V)-based materials are promising electrodes for EES devices, which offer highly efficient charge transfer kinetics. This review summarizes the latest development of transition metal-based materials with self-supported structures for EES systems. Special focus has been taken on the synthetic methods, the selection of substrates, architectures and chemical compositions of different self-supported nanoarrays in energy storage systems. Finally, the challenges and opportunities of these materials for future development in this field are briefly discussed. We believe that the advancement in self-supported electrode materials would pave the way towards next-generation EES.
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Affiliation(s)
- Xiong Xiong Liu
- Institute for Advanced Study, Chengdu University, Chengdu, 610106, China.,School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Chong Chen
- State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Qian He
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Qingquan Kong
- Institute for Advanced Study, Chengdu University, Chengdu, 610106, China
| | - Daniel John Blackwood
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117574, Singapore
| | - Nian Wu Li
- State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Le Yu
- State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jun Song Chen
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
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21
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Zhou R, Zeng X, Zhao H, Chen Q, Wu P. Combating the hypoxia limit of photodynamic therapy through reversing the survival-related pathways of cancer cells. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Swain N, Saravanakumar B, Mohanty S, Ramadoss A. Engineering of Thermally Converted 3D-NiO-Co3O4/Ni//3D-ϒ-Fe4N-C@Ni/SS Porous Electrodes for High-performance Supercapatteries. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140076] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Bathula C, Rabani I, Kadam A, Opoku H, Patil SA, Shreshta NK, Hwang JH, Seo YS, Kim HS. Sonochemically exfoliated polymer-carbon nanotube interface for high performance supercapacitors. J Colloid Interface Sci 2022; 606:1792-1799. [PMID: 34507170 DOI: 10.1016/j.jcis.2021.08.136] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 02/07/2023]
Abstract
Energy storage characteristics of organic molecules continue to attract attention for supercapacitor applications, as they offer simple processing and can be employed for flexible devices. The current study utilized the ultrasonically driven exfoliation to obtain poly diketo pyrrolopyrrole-thieno thiophene (PDPT) and multiwalled carbon nanotube (CNT) composite, subsequently fabricated a PDPT donor-π-acceptor heterojunction with CNT and investigated energy storage applications. The composite was characterized using series of standard analytical techniques. Morphology indicated well alighted CNT tubes on PDPT polymer nanosheets with an effective interface, providing efficient electrochemical regions, enabling fast charge transfer between PDPT and CNT. We also investigated the PDPT-CNT composite electrochemical behavior, achieving 319.2 and 105.7F.g-1 capacitances for PDPT-CNT and PDPT at 0.5 A.g-1 current density for three electrode configurations; and 126 and 42F.g-1 for symmetric structures, respectively. Experimental results confirmed that PDPT-CNT composite electrodes achieved two fold the capacitance compared with PDPT alone. The hypothesis and synthetic approach provide an excellent candidate for conjugated polymers with carbon nanotubes and energy related devices.
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Affiliation(s)
- Chinna Bathula
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Iqra Rabani
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Abhijit Kadam
- Department of Chemical and Biological Engineering, Gachon University, Seongnamdaero 1342, Seongnam-si, Republic of Korea
| | - Henry Opoku
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Supriya A Patil
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Nabeen K Shreshta
- Division of Physics and Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Jung-Hoon Hwang
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Young-Soo Seo
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea.
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24
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Sun X, Chen K, Liang F, Zhi C, Xue D. Perspective on Micro-Supercapacitors. Front Chem 2022; 9:807500. [PMID: 35087793 PMCID: PMC8787070 DOI: 10.3389/fchem.2021.807500] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/10/2021] [Indexed: 11/17/2022] Open
Abstract
The rapid development of portable, wearable, and implantable electronic devices greatly stimulated the urgent demand for modern society for multifunctional and miniaturized electrochemical energy storage devices and their integrated microsystems. This article reviews material design and manufacturing technology in different micro-supercapacitors (MSCs) along with devices integrate to achieve the targets of their various applications in recent years. Finally, We also critically prospect the future development directions and challenges of MSCs.
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Affiliation(s)
- Xiangfei Sun
- Institute of Novel Semiconductors, State Key laboratory of Crystal Material, Jinan, China
| | - Kunfeng Chen
- Institute of Novel Semiconductors, State Key laboratory of Crystal Material, Jinan, China
- *Correspondence: Kunfeng Chen, ; Feng Liang, ; Dongfeng Xue,
| | - Feng Liang
- State Key Laboratory of Complex Non-ferrous Metal Resources Clean Application, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, China
- *Correspondence: Kunfeng Chen, ; Feng Liang, ; Dongfeng Xue,
| | - Chunyi Zhi
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, China
| | - Dongfeng Xue
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- *Correspondence: Kunfeng Chen, ; Feng Liang, ; Dongfeng Xue,
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25
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Zhou Y, Wang Z, Zheng C, Fu Q, Wu M, Zhao H, Lei Y. Construction of Co0.85Se@nickel nanopores array hybrid electrode for high-performance asymmetric supercapacitors. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117081] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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26
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Zhong X, Mao Q, Li Z, Wu Z, Xie Y, Li SH, Liang G, Wang H. Biomass-derived O, N-codoped hierarchically porous carbon prepared by black fungus and Hericium erinaceus for high performance supercapacitor. RSC Adv 2021; 11:27860-27867. [PMID: 35480776 PMCID: PMC9037799 DOI: 10.1039/d1ra03699h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 08/08/2021] [Indexed: 12/02/2022] Open
Abstract
Biomass-derived carbon materials have been widely researched due to their advantages such as low cost, environmental friendliness, readily available raw materials. Black fungus and Hericium erinaceus contain many kinds of amino acids. In this paper, unique O, N-codoped black fungus-derived activated carbons (FAC X ), and Hericium erinaceus-derived activated carbons (HAC X ) were prepared by KOH chemical activation under different temperatures without adding additional reagents containing nitrogen and oxygen functional groups, respectively. As electrode materials of symmetric supercapacitors, FAC2 and HAC2 calcined at 800 °C exhibited the highest specific capacitance of 209.3 F g-1 and 238.6 F g-1 at 1.0 A g-1 in the two-electrode configuration with 6.0 M KOH as the electrolyte, respectively. The X-ray photoelectron spectroscopy confirmed that the as-synthesized FAC X and HAC X contained small amounts of nitrogen and oxygen elements. Moreover, heteroatom-doped FAC2 and HAC2 electrode materials shown excellent rate performance (84.1% and 75.0% capacitance retention at 20 A g-1, respectively). By comparison, the oxygen-rich hierarchical porous carbon (HAC2) shows higher specific capacitance and energy density and longer cycling performance. Nevertheless, carbon-rich hierarchical porous carbon (FAC2) indicates excellent rate performance. Biomass-derived heteroatom self-doped porous carbons are expected to become ideal active materials for high performance supercapacitor.
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Affiliation(s)
- Xinxian Zhong
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Quanyuan Mao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Zesheng Li
- College of Chemistry, Guangdong University of Petrochemical Technology Maoming 525000 China
| | - Zhigao Wu
- Guangxi Vocational and Technical Institute of Industry Nanning 530005 China
| | - Yatao Xie
- School of Materials Science and Engineering, Ocean University of China Qingdao 266100 China
| | - Shu-Hui Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Guichao Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Hongqiang Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
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27
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Wang Y, Du Z, Xiao J, Cen W, Yuan S. Polypyrrole-encapsulated Fe2O3 nanotube arrays on a carbon cloth support: Achieving synergistic effect for enhanced supercapacitor performance. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138486] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Yan X, Ha Y, Wu R. Binder-Free Air Electrodes for Rechargeable Zinc-Air Batteries: Recent Progress and Future Perspectives. SMALL METHODS 2021; 5:e2000827. [PMID: 34927848 DOI: 10.1002/smtd.202000827] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/17/2020] [Indexed: 06/14/2023]
Abstract
Designing an efficient air electrode is of great significance for the performance of rechargeable zinc (Zn)-air batteries. However, the most widely used approach to fabricate an air electrode involves polymeric binders, which may increase the interface resistance and block electrocatalytic active sites, thus deteriorating the performance of the battery. Therefore, binder-free air electrodes have attracted more and more research interests in recent years. This article provides a comprehensive overview of the latest advancements in designing and fabricating binder-free air electrodes for electrically rechargeable Zn-air batteries. Beginning with the fundamentals of Zn-air batteries and recently reported bifunctional active catalysts, self-supported air electrodes for liquid-state and flexible solid-state Zn-air batteries are then discussed in detail. Finally, the conclusion and the challenges faced for binder-free air electrodes in Zn-air batteries are also highlighted.
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Affiliation(s)
- Xiaoxiao Yan
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Yuan Ha
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Renbing Wu
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
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29
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Cheng HW, Wang S, Porter MD, Zhong CJ. Molecularly-tunable nanoelectrode arrays created by harnessing intermolecular interactions. Chem Sci 2021; 12:6081-6090. [PMID: 33996004 PMCID: PMC8098684 DOI: 10.1039/d0sc06955h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Intermolecular interactions play a critical role in the binding strength of molecular assemblies on surfaces. The ability to harness them enables molecularly-tunable interfacial structures and properties. Herein we report the tuning of the intermolecular interactions in monolayer assemblies derived from organothiols of different structures for the creation of nanoelectrode arrays or ensembles with effective mass transport by a molecular-level perforation strategy. The homo- and hetero-intermolecular interactions can be fully controlled, which is demonstrated not only by thermodynamic analysis of the fractional coverage but also by surface infrared reflection absorption and X-ray photoelectron spectroscopic characterizations. This understanding enables controllable electrochemical perforation for the creation of ensembles or arrays of channels across the monolayer thickness with molecular and nanoscale dimensions. Redox reactions on the nanoelectrode array display molecular tunability with a radial diffusion characteristic in good agreement with theoretical simulation results. These findings have implications for designing membrane-type ion-gating, electrochemical sensing, and electrochemical energy storage devices with molecular level tunability. Intermolecular interactions in monolayer assembly are harnessed for creating molecularly-tunable nanoelectrode arrays or ensembles.![]()
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Affiliation(s)
- Han-Wen Cheng
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology Shanghai 201418 China .,Department of Chemistry, State University of New York at Binghamton Binghamton New York 13902 USA
| | - Shan Wang
- Department of Chemistry, State University of New York at Binghamton Binghamton New York 13902 USA
| | - Marc D Porter
- Department of Chemistry and Chemical Engineering, University of Utah Salt Lake City Utah 84112 USA
| | - Chuan-Jian Zhong
- Department of Chemistry, State University of New York at Binghamton Binghamton New York 13902 USA
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30
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Xu Y, Shi W, Li R, Qiao Z, Fang J, Yang Q, Xiong C. High Performance Supercapacitors Based on Mesopore Structured Multiwalled Carbon Nanotubes. ChemistryOpen 2021; 10:347-351. [PMID: 33629460 PMCID: PMC7953479 DOI: 10.1002/open.202000274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/18/2020] [Indexed: 12/04/2022] Open
Abstract
A 3D CNT/few layered graphene construct (CNT-FLG) with mesopore structure was fabricated and applied in supercapacitors. The structure was acquired through a two-step method. Firstly, commercial multiwalled carbon nanotubes (MCNTs) were oxidized in a mixed solution of concentrated acid and modified with a couple of long-chain organic ions. Second, the above resultant product was carbonized at a high temperature. The achieved structure offers a 3D interconnected electrically conductive network as well as mesopore structure. It also significantly improves the specific surface area of MCNTs. Result of BET tests showed that the specific surface area of CNT-FLG reached to 2235 m2 /g. When acted as electrode materials in a supercapacitor structure, specific capacitance was approximately 531.2 F/g at a current density of 0.8 A/g. At current density of 50 A/g, specific capacitance remained 204.4 F/g. Besides, the capacitance retention was as high as 96.18 % after 10000 cycles at the current density of 5 A/g.
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Affiliation(s)
- Yang Xu
- Huanggang Normal UniversityXingang 2nd AvyHuanggang438000China
| | - Weili Shi
- Huanggang Normal UniversityXingang 2nd AvyHuanggang438000China
| | - Ruguang Li
- Huanggang Normal UniversityXingang 2nd AvyHuanggang438000China
| | - Zheng Qiao
- Huanggang Normal UniversityXingang 2nd AvyHuanggang438000China
| | - Jian Fang
- Huanggang Normal UniversityXingang 2nd AvyHuanggang438000China
| | - Quanlin Yang
- Wuhan University of TechnologyLuoshi Road 122Wuhan430070China
| | - Chuanxi Xiong
- Wuhan University of TechnologyLuoshi Road 122Wuhan430070China
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31
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Amin KM, Muench F, Kunz U, Ensinger W. 3D NiCo-Layered double Hydroxide@Ni nanotube networks as integrated free-standing electrodes for nonenzymatic glucose sensing. J Colloid Interface Sci 2021; 591:384-395. [PMID: 33631526 DOI: 10.1016/j.jcis.2021.02.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/02/2021] [Accepted: 02/07/2021] [Indexed: 12/29/2022]
Abstract
Nickel cobalt layered double hydroxide (NiCo-LDH)-based materials have recently emerged as catalysts for important electrochemical applications. However, they frequently suffer from low electrical conductivity and agglomeration, which in turn impairs their performance. Herein, we present a catalyst design based on integrated, self-supported nickel nanotube networks (Ni-NTNWs) loaded with NiCo-LDH nanosheets, which represents a binder-free, hierarchically nanostructured electrode architecture combining continuous conduction paths and openly accessible macropores of low tortuosity with an ultrahigh density of active sites. Similar to macroscale metallic foams, the NTNWs serve as three-dimensionally interconnected, robust frameworks for the deposition of active material, but are structured in the submicron range. Our synthesis is solely based on scalable approaches, namely templating with commercial track-etched membranes, electroless plating, and electrodeposition. Morphological and compositional characterization proved the successful decoration of the inner and outer nanotube surfaces with a conformal NiCo-LDH layer. Ni-NTNW electrodes and hydroxide-decorated variants showed excellent performance in glucose sensing. The highest activity was achieved for the catalyst augmented with NiCo-LDH nanosheets, which surpassed the modification with pure Ni(OH)2. Despite its low thickness of 20 µm, the optimized catalyst layer provided an outstanding sensitivity of 4.6 mA mM-1 cm-2, a low detection limit of 0.2 µM, a fast response time of 5.3 s, high selectivity and stability, and two linear ranges covering four orders of magnitude, up to 2.5 mM analyte. As such, derivatized interconnected metal nano-networks represent a promising design paradigm for highly miniaturized yet effective catalyst electrodes and electrochemical sensors.
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Affiliation(s)
- Khaled M Amin
- Department of Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany; Department of Polymer Chemistry, Atomic Energy Authority, Cairo 11787, Egypt.
| | - Falk Muench
- Department of Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
| | - Ulrike Kunz
- Department of Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
| | - Wolfgang Ensinger
- Department of Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
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32
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Wu B, Zhang F, Nie Z, Qian H, Liu P, He H, Wu J, Chen Z, Chen S. A high-performance battery-like supercapacitor electrode with a continuous NiTe network skeleton running throughout Co(OH)2/Co9S8 nanohybrid. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137325] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Bui TAN, Nguyen TG, Darmanto W, Doong RA. 3-Dimensional ordered reduced graphene oxide embedded with N-doped graphene quantum dots for high performance supercapacitors. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Khalafallah D, Zhi M, Hong Z. Development Trends on Nickel‐Based Electrocatalysts for Direct Hydrazine Fuel Cells. ChemCatChem 2020. [DOI: 10.1002/cctc.202001018] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Diab Khalafallah
- State Key Laboratory of Silicon Material School of Materials Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 P.R. China
- Mechanical Design and Materials Department Faculty of Energy Engineering Aswan University P.O. Box 81521 Aswan Egypt
| | - Mingjia Zhi
- State Key Laboratory of Silicon Material School of Materials Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 P.R. China
| | - Zhanglian Hong
- State Key Laboratory of Silicon Material School of Materials Science and Engineering Zhejiang University 38 Zheda Road Hangzhou 310027 P.R. China
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35
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Wu W, Xia P, Xuan Y, Yang R, Chen M, Jiang D. Hierarchical CoO@Ni(OH) 2 core-shell heterostructure arrays for advanced asymmetric supercapacitors. NANOTECHNOLOGY 2020; 31:405705. [PMID: 32503008 DOI: 10.1088/1361-6528/ab99f2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Constructing multicomponent electrode materials with a rational structure is an effective route to develop high-performance supercapacitors. We herein report a novel nickel-foam-supported hierarchical CoO@Ni(OH)2 nanowire-nanosheet core-shell heterostructure array synthesized by a facile hydrothermal-electrodeposition strategy. The core CoO nanowire arrays with good electrical conductivity and shell Ni(OH)2 nanosheets with thickness of ∼ 2 nm synergistically contributes to increased active sites, fast mass transfer, and improved structural stability. Consequently, the optimal CoO@Ni(OH)2-400 s architecture delivers a high specific capacitance of 1418.2 F g-1 at 1 A g-1 and 93.7% retention after 5000 cycles. Furthermore, the CoO@Ni(OH)2//activated carbon asymmetric supercapacitor could achieve an outstanding energy density of up to 92.47 W h kg-1 at 800 W kg-1. This simple but effective strategy provides insight into the development of core-shell hierarchical architectures for constructing high-performance supercapacitors.
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Affiliation(s)
- Wen Wu
- College of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, People's Republic of China
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36
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Ganganboina AB, Park EY, Doong RA. Boosting the energy storage performance of V 2O 5 nanosheets by intercalating conductive graphene quantum dots. NANOSCALE 2020; 12:16944-16955. [PMID: 32776060 DOI: 10.1039/d0nr04362a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
2-Dimensional (2D) transition metal oxides are an emerging class of energy materials that offer a wide spectrum of potential applications in electrochemical energy storage. In this study, V2O5 nanosheets have been nano-engineered with 0D graphene quantum dots (GQDs) via a solvothermal treatment process, and they serve as an anode material to boost electrochemical energy storage properties. The interlayer embedded GQD endows V2O5 (VNS-GQD) with structural and compositional advantages for high-performance energy storage, including expanded interlayer distances between layers, fast electrochemical kinetics, and additional stability to buffer the volume variation. Moreover, the strong coupling effect between GQDs and VNS, an ultra-large interfacial area and enhanced electrical conductivity promote the intercalation pseudocapacitance. VNS-GQD exhibits the specific capacitance of 572 F g-1 at a current density of 1 A g-1 and retains 92% of the initial capacitance after 10 000 charge-discharge cycles. The asymmetric supercapacitor exhibits superior electrochemical performance at a voltage window of 1.5 V. The energy density is 31.25 W h kg-1 at the power density of 2.25 kW kg-1, and maintains a superior energy density of 20.62 W h kg-1 at the high power density of 14.86 kW kg-1. The results of this study can provide an avenue for fabricating nano-sandwiched composites by embedding GQDs into interlayers of 2D transition metal oxide for ultra-high performance applications of energy storage devices.
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Affiliation(s)
- Akhilesh Babu Ganganboina
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya Suruga-ku, Shizuoka 422-8529, Japan
| | - Enoch Y Park
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya Suruga-ku, Shizuoka 422-8529, Japan and Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya Suruga-ku, Shizuoka 422-8529, Japan
| | - Ruey-An Doong
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan. and Faculty of Science and Technology, Airlangga University, Sarabaya, 60115, Indonesia
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37
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Chen C, Zhao C, Li C, Liu J, Gui D. Porous NiCo2O4 Nanowire Arrays as Supercapacitor Electrode Materials with Extremely High Cycling Stability. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-0149-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Nikam SM, Sharma A, Rahaman M, Teli AM, Mujawar SH, Zahn DRT, Patil PS, Sahoo SC, Salvan G, Patil PB. Pulsed laser deposited CoFe 2O 4 thin films as supercapacitor electrodes. RSC Adv 2020; 10:19353-19359. [PMID: 35515464 PMCID: PMC9054038 DOI: 10.1039/d0ra02564j] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/11/2020] [Indexed: 12/20/2022] Open
Abstract
The influence of the substrate temperature on pulsed laser deposited (PLD) CoFe2O4 thin films for supercapacitor electrodes was thoroughly investigated. X-ray diffractometry and Raman spectroscopic analyses confirmed the formation of CoFe2O4 phase for films deposited at a substrate temperature of 450 °C. Topography and surface smoothness was measured using atomic force microscopy. We observed that the films deposited at room temperature showed improved electrochemical performance and supercapacitive properties compared to those of films deposited at 450 °C. Specific capacitances of about 777.4 F g-1 and 258.5 F g-1 were obtained for electrodes deposited at RT and 450 °C, respectively, at 0.5 mA cm-2 current density. The CoFe2O4 films deposited at room temperature exhibited an excellent power density (3277 W kg-1) and energy density (17 W h kg-1). Using electrochemical impedance spectroscopy, the series resistance and charge transfer resistance were found to be 1.1 Ω and 1.5 Ω, respectively. The cyclic stability was increased up to 125% after 1500 cycles due to the increasing electroactive surface of CoFe2O4 along with the fast electron and ion transport at the surface.
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Affiliation(s)
- S M Nikam
- School of Nanoscience and Technology, Shivaji University Kolhapur Maharashtra - 416004 India
| | - A Sharma
- Semiconductor Physics, Chemnitz University of Technology 09107 Chemnitz Germany
| | - M Rahaman
- Semiconductor Physics, Chemnitz University of Technology 09107 Chemnitz Germany
| | - A M Teli
- Department of Physics, Shivaji University Kolhapur Maharashtra - 416004 India
| | - S H Mujawar
- Department of Physics, Yashavantrao Chavan Institute of Science Satara Maharashtra - 415001 India
| | - D R T Zahn
- Semiconductor Physics, Chemnitz University of Technology 09107 Chemnitz Germany
| | - P S Patil
- School of Nanoscience and Technology, Shivaji University Kolhapur Maharashtra - 416004 India
- Department of Physics, Shivaji University Kolhapur Maharashtra - 416004 India
| | - S C Sahoo
- Department of Physics, Central University of Kerala Kasaragod Kerala - 671320 India
| | - G Salvan
- Semiconductor Physics, Chemnitz University of Technology 09107 Chemnitz Germany
| | - P B Patil
- Department of Physics, The New College, Shivaji University Kolhapur Maharashtra - 416012 India
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39
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Rational Design of Spinel Oxide Nanocomposites with Tailored Electrochemical Oxygen Evolution and Reduction Reactions for ZincAir Batteries. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10093165] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The unique physical and chemical properties of spinels have made them highly suitable electrocatalysts in oxygen evolution reaction and oxygen reduction reaction (OER & ORR). Zinc–air batteries (ZABs), which are safer and more cost-effective power sources than commercial lithium-ion batteries, hinge on ORR and OER. The slow kinetics of the air electrode reduce its high theoretical energy density and specific capacity, which limits its practical applications. Thus, tuning the performance of the electrocatalyst and cathode architecture is vital for improving the performance of ZABs, which calls for exploring spinel, a material that delivers improved performance. However, the structure–activity relationship of spinel is still unclear because there is a lack of extensive information about it. This study was performed to address the promising potential of spinel as the bifunctional electrocatalyst in ZABs based on an in-depth understanding of spinel structure and active sites at the atomic level.
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40
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Controllable Synthesis of Three-Dimensional β-NiS Nanostructured Assembly for Hybrid-Type Asymmetric Supercapacitors. NANOMATERIALS 2020; 10:nano10030487. [PMID: 32182678 PMCID: PMC7153257 DOI: 10.3390/nano10030487] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 12/15/2022]
Abstract
The process of energy storage in supercapacitors via the surface reaction of the electrode can lead to a significant perfecting of the electrochemical performance of supercapacitors, for developing the morphologies of materials and increasing the specific surface areas of the electrodes. Three-dimensional nickel sulfide (NiS) superstructures with nanomorphologies, viz. coral-like, urchin-like, flake-like, and flower-like, are synthesized through simple solvothermal methods, without any template. The nanostructured flower-like β-NiS demonstrates, not only a remarkable specific capacitance of 2425.89 F·g−1 at the current densities of 1 A·g−1, but also an excellent cycling stability of approximately 100% (at the current density of 10 A·g−1 over 5000 cycles). Moreover, the hybrid-type asymmetric supercapacitor, constructed from the flower-like β-NiS positive electrode and active carbon negative electrode, exhibits an energy density of 42.12 Wh·kg−1 at a power density of 28.8 kW·kg−1.
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41
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Zhang D, Fu X, Zhang X, Li C, Bian H, Zhang X, Cao Z, Zhang R, Zhang J. Facile synthesis of hierarchical Ni7S6 and Co(ii)-doped Ni7S6 flower structures for high-performance supercapacitors. NEW J CHEM 2020. [DOI: 10.1039/c9nj06077d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The as-prepared flower-like Ni7S6 structure with abundant surface active sites demonstrated good supercapacitor performance in an alkaline solution.
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Affiliation(s)
- Daojun Zhang
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
| | - Xueying Fu
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
| | - Xiaobei Zhang
- College of Chemistry and Molecular Engineering, Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Chengxiang Li
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
| | - Hao Bian
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
| | - Xinyu Zhang
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
| | - Zhi Cao
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
| | - Renchun Zhang
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
| | - Jingchao Zhang
- Henan Key Laboratory of New Optoelectronic Functional Materials
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- China
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42
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He Q, Liu XX, Wu R, Chen JS. PVP-Assisted Synthesis of Self-Supported Ni 2P@Carbon for High-Performance Supercapacitor. RESEARCH 2019; 2019:8013285. [PMID: 31912046 PMCID: PMC6944484 DOI: 10.34133/2019/8013285] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 10/30/2019] [Indexed: 11/17/2022]
Abstract
Highly conductive and stable electrode materials are usually the focus of high-performance supercapacitors. In this work, a unique design of Ni2P@carbon self-supported composite nanowires directly grown on Ni foam was applied for a supercapacitor. The Co3O4 nanowire array was first synthesized on the Ni foam substrate, and the resulting Ni2P@carbon nanocomposite was obtained by hydrothermally coating Co3O4 with the Ni-ethylene glycol complex followed by gaseous phosphorization. We have discovered that the molecular weight of surfactant polyvinylpyrrolidone (PVP) used in the hydrothermal step, as well as the temperature for phosphorization, played very important roles in determining the electrochemical properties of the samples. Specifically, the sample synthesized using PVP with 10 k molecular weight and phosphorized at 300°C demonstrated the best supercapacitive performance among the different samples, with the highest capacitance and most stable cyclic retention. When an asymmetric supercapacitor (ASC) was assembled with this Ni2P@carbon sample as the cathode and activated carbon (AC) as the anode, the ASC device showed excellent capacitances of 3.7 and 1.6 F cm−2 at 2 and 50 mA cm−2, respectively, and it kept a high capacitance of 1.2 F cm−2 after 5000 cycles at a current rate of 25 mA cm−2. In addition, the ASC could reach a high energy density of about 122.8 Wh kg−1 at a power density of 0.15 kW kg−1 and 53.3 Wh kg−1 at the highest power density of 3.78 kW kg−1. Additionally, this device also had the ability to power up 16 red LEDs effortlessly, making it a strong candidate in electrochemical energy storage for practical usage.
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Affiliation(s)
- Qian He
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xiong Xiong Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Rui Wu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jun Song Chen
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China.,Center for Applied Chemistry, University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave. West Hi-Tech Zone, Chengdu, China
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43
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Luo Y, Que W, Yang C, Tian Y, Yin X. Hydrothermal synthesis of transition metal sulfides/MWCNT nanocomposites for high-performance asymmetric electrochemical capacitors. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134738] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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44
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Gao SQ, Zhang PP, Guo SH, Chen WQ, Li M, Liu F, Cheng JP. Synthesis of single-phase CuCo 2-xNi xS 4 for high-performance supercapacitors. J Colloid Interface Sci 2019; 555:284-293. [PMID: 31394315 DOI: 10.1016/j.jcis.2019.07.091] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/27/2019] [Accepted: 07/29/2019] [Indexed: 10/26/2022]
Abstract
Developing safe, efficient and environment-friendly energy storage systems continues to inspire researchers to synthesize new electrode materials. Doping or substituting host material by some guest elements has been regarded as an effective way to improve the performance of supercapacitors. In this work, single-phase CuCo2-xNixS4 materials were synthesized by a facile two-step hydrothermal method, where Co in CuCo2S4 was substituted by Ni. Cobalt could be easily substituted with Ni in a rational range to keep its constant phase. But, a high content of Ni resulted in a multi-phase composite. Among a series of CuCo2-xNixS4 materials with different Ni/Co mole ratios, CuCo1.25Ni0.75S4 material presented a significantly high specific capacitance (647 F g-1 or 272 C g-1 at 1 A g-1) and the best cycling stability (∼98% specific capacitance retention after 10,000 charge-discharge cycles), which was mainly due to the modified composition, specific single phase, higher electroconductivity, more electroactive sites and the synergistic effect between Ni and Co. Moreover, the assembled asymmetric capacitor using CuCo1.25Ni0.75S4 as a positive electrode and activated carbon as a negative electrode delivered a high energy density of 31.8 Wh kg-1 at the power density of 412.5 W kg-1. These results demonstrated that ternary metal sulfides of CuCo2-xNixS4 are promising electrode materials for high-performance supercapacitors.
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Affiliation(s)
- S Q Gao
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou 310027, PR China
| | - P P Zhang
- Ocean College, Zhejiang University, Zhoushan 316021, PR China
| | - S H Guo
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou 310027, PR China; Center for High Pressure Science and Technology Advanced Research (HPSTAR), 1690 Cailun Road, Shanghai 201203, PR China
| | - W Q Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou 310027, PR China
| | - M Li
- Research Institute of Narada Power Source Co., Ltd, Hangzhou 311305, PR China
| | - F Liu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou 310027, PR China
| | - J P Cheng
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou 310027, PR China.
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45
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Chi K, Zhang X, Tian X, Zhang Z, Wu Z, Xiao F, Wang S. High‐Performance Flexible Asymmetric Supercapacitors Facilitated by N‐doped Porous Vertical Graphene Nanomesh Arrays. ChemElectroChem 2019. [DOI: 10.1002/celc.201901499] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Kai Chi
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology Wuhan 430074 China
| | - Xiangyu Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology Wuhan 430074 China
| | - Xin Tian
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology Wuhan 430074 China
| | - Zheye Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology Wuhan 430074 China
| | - Zhu Wu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology Wuhan 430074 China
| | - Fei Xiao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology Wuhan 430074 China
| | - Shuai Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology Wuhan 430074 China
- Flexible Electronics Research Center (FERC), School of Mechanical Science and Engineering, DepartmentHuazhong University of Science and Technology Wuhan 430074 China
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Tao Y, Chang Q, Liu Q, Guan H, Yang G, Lang R, Chen G, Dong C. In situ fabrication of Ni(OH)2 nanoflakes/K-Ti-O nanowires on NiTi foil for high performance non-enzymatic hydrogen peroxide sensing. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Xu B, Zheng M, Tang H, Chen Z, Chi Y, Wang L, Zhang L, Chen Y, Pang H. Iron oxide-based nanomaterials for supercapacitors. NANOTECHNOLOGY 2019; 30:204002. [PMID: 30669138 DOI: 10.1088/1361-6528/ab009f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
As highly efficient and clean electrochemical energy storage devices, supercapacitors (SCs) have drawn widespread attention as promising alternatives to batteries in recent years. Among various electrode materials, iron oxide materials have been widely studied as negative SC electrode materials due to their broad working window in negative potential, ideal theoretical specific capacitance, good redox activity, abundant availability, and eco-friendliness. However, iron oxides still suffer from the problems of low stability and poor conductivity. In this review, recent progress in iron oxide-based nanomaterials, including Fe2O3, Fe3O4, FexOy, and FeOOH, as electrode materials of SCs, is discussed. The nanostructure design and various synergistic effects of nanocomposites for improving the electrochemical performance of iron oxides are emphasized. Research on iron oxide-based symmetric/asymmetric SCs is also discussed. Future outlooks regarding iron oxides for SCs are likewise proposed.
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Affiliation(s)
- Bingyan Xu
- School of Chemistry and Chemical Engineering, Institute for Innovative Materials and Energy, Yangzhou University, Yangzhou, 225002 Jiangsu, People's Republic of China
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Chodankar NR, Dubal DP, Ji SH, Kim DH. Self-Assembled Nickel Pyrophosphate-Decorated Amorphous Bimetal Hydroxides 2D-on-2D Nanostructure for High-Energy Solid-State Asymmetric Supercapacitor. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901145. [PMID: 30968578 DOI: 10.1002/smll.201901145] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Indexed: 06/09/2023]
Abstract
To obtain a supercapacitor with a remarkable specific capacitance and rate performance, a cogent design and synthesis of the electrode material containing abundant active sites is necessary. In present work, a scalable strategy is developed for preparing 2D-on-2D nanostructures for high-energy solid-state asymmetric supercapacitors (ASCs). The self-assembled vertically aligned microsheet-structured 2D nickel pyrophosphate (Ni2 P2 O7 ) is decorated with amorphous bimetallic nickel cobalt hydroxide (NiCo-OH) to form a 2D-on-2D nanostructure arrays electrode. The resulting Ni2 P2 O7 /NiCo-OH 2D-on-2D array electrode exhibits peak specific capacity of 281 mA hg-1 (4.3 F cm-2 ), excellent rate capacity, and cycling stability over 10 000 charge-discharge cycles in the positive potential range. The excellent electrochemical features can be attributed to the high electrical conductivity and 2D layered structure of Ni2 P2 O7 along with the Faradic capacitance of the amorphous NiCo-OH nanosheets. The constructed Ni2 P2 O7 /NiCo-OH//activated carbon based solid-state ASC cell operates in a high voltage window of 1.8 V with an energy density of 78 Wh kg-1 (1.065 mWh cm-3 ) and extraordinary cyclic stability over 10 000 charge-discharge cycles with excellent energy efficiency (75%-80%) over all current densities. The excellent electrochemical performance of the prepared electrode and solid-state ASC device offers a favorable and scalable pathway for developing advanced electrodes.
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Affiliation(s)
- Nilesh R Chodankar
- School of Chemical Engineering, Chonnam National University 77, Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Deepak P Dubal
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4001, Australia
| | - Su-Hyeon Ji
- School of Chemical Engineering, Chonnam National University 77, Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Do-Heyoung Kim
- School of Chemical Engineering, Chonnam National University 77, Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea
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Abstract
Electrospinning is a versatile and viable technique for generating ultrathin fibers. Remarkable progress has been made with regard to the development of electrospinning methods and engineering of electrospun nanofibers to suit or enable various applications. We aim to provide a comprehensive overview of electrospinning, including the principle, methods, materials, and applications. We begin with a brief introduction to the early history of electrospinning, followed by discussion of its principle and typical apparatus. We then discuss its renaissance over the past two decades as a powerful technology for the production of nanofibers with diversified compositions, structures, and properties. Afterward, we discuss the applications of electrospun nanofibers, including their use as "smart" mats, filtration membranes, catalytic supports, energy harvesting/conversion/storage components, and photonic and electronic devices, as well as biomedical scaffolds. We highlight the most relevant and recent advances related to the applications of electrospun nanofibers by focusing on the most representative examples. We also offer perspectives on the challenges, opportunities, and new directions for future development. At the end, we discuss approaches to the scale-up production of electrospun nanofibers and briefly discuss various types of commercial products based on electrospun nanofibers that have found widespread use in our everyday life.
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Affiliation(s)
- Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Tong Wu
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Yunqian Dai
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, People’s Republic of China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Yang C, Chen H, Guan C. Hybrid CoO Nanowires Coated with Uniform Polypyrrole Nanolayers for High-Performance Energy Storage Devices. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E586. [PMID: 30970649 PMCID: PMC6523395 DOI: 10.3390/nano9040586] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 01/31/2023]
Abstract
Transition metal oxides with high theoretic capacities are promising materials as battery-type electrodes for hybrid supercapacitors, but their practical applications are limited by their poor electric conductivity and unsatisfied rate capability. In this work, a hybrid structure of CoO nanowires coated with conformal polypyrrole (Ppy) nanolayer is proposed, designed and fabricated on a flexible carbon substrate through a facile two-step method. In the first step, porous CoO nanowires are fabricated on flexible carbon substrate through a hydrothermal procedure combined with an annealing process. In the second step, a uniform nanolayer of Ppy is further coated on the surfaces of the CoO nanowires, resulting in a hybrid core-shell CoO@Ppy nanoarrays. The CoO@Ppy aligned on carbon support can be directly utilized as electrode material for hybrid supercapacitors. Since the conductive Ppy coating layer provides enhanced electric conductivity, the hybrid electrode demonstrates much higher capacity and superior rate capability than pure CoO nanowires. As a further demonstration, Ppy layer can also be realized on SnO₂ nanowires. Such facile conductive-layer coating method can be also applied to other types of conducting polymers (as the shell) and metal oxide materials (as the core) for various energy-related applications.
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Affiliation(s)
- Chunhai Yang
- School of Chemistry & Environment Engineering, Hubei University for Nationalities, Enshi 445000, China.
| | - Hao Chen
- School of Engineering, Zhejiang A&F University, Hangzhou 311300, China.
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore.
| | - Cao Guan
- Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072, China.
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