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Cao JJ, Jiang Y, Zhan H, Zhang Y, Wang JN. Carbon dioxide-boosted growth of high-density and vertically aligned carbon nanotube arrays on a stainless steel mesh. RSC Adv 2022; 12:34740-34745. [PMID: 36545595 PMCID: PMC9720505 DOI: 10.1039/d2ra04822a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
Vertically aligned carbon nanotubes (VACNTs), a unique group of highly aligned CNTs normal to a substrate, have been extensively studied during the past decades. However, it is a long-standing challenge to improve the height of VACNTs due to the incidental deactivation of catalysts during growth. Herein, we demonstrate a facile strategy toward synthesizing high-density and well-aligned CNT arrays from in situ formed Fe-based catalysts on a stainless steel (SS) mesh. These catalysts were generated by direct oxidation-reduction treatment to the SS, which had excellent adhesion on the mesh substrate, and thus suppressed catalyst aggregation and promoted CNT growth under the flow of C2H2. In particular, by feeding additional CO2 at an optimal rate, the height of CNT arrays could be boosted from ca. 15 μm to ca. 80.0 μm, one of the highest heights observed for VACNTs on SS-based substrates so far. This is attributed to the prolonged activity of the catalysts by CO2 induced removal of extra carbon. Our study might provide an insight into the development of efficient strategies for VACNT growth on conductive substrates.
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Affiliation(s)
- Jun Jie Cao
- School of Mechanical and Power Engineering, East China University of Science and Technology130 Meilong RoadShanghai 200237China+86-21-64252360
| | - Yu Jiang
- School of Mechanical and Power Engineering, East China University of Science and Technology130 Meilong RoadShanghai 200237China+86-21-64252360
| | - Hang Zhan
- School of Mechanical and Power Engineering, East China University of Science and Technology130 Meilong RoadShanghai 200237China+86-21-64252360
| | - Yu Zhang
- School of Mechanical and Power Engineering, East China University of Science and Technology130 Meilong RoadShanghai 200237China+86-21-64252360
| | - Jian Nong Wang
- School of Mechanical and Power Engineering, East China University of Science and Technology130 Meilong RoadShanghai 200237China+86-21-64252360
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2
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Jiang B, Liu Y, Zhang J, Wang Y, Zhang X, Zhang R, Huang LL, Zhang D. Synthesis of bimetallic nickel cobalt selenide particles for high-performance hybrid supercapacitors. RSC Adv 2022; 12:1471-1478. [PMID: 35425193 PMCID: PMC8978878 DOI: 10.1039/d1ra08678b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 12/20/2021] [Indexed: 11/21/2022] Open
Abstract
Supercapacitors are known as promising excellent electrochemical energy storage devices because of their attractive features, including quick charge and discharge, high power density, low cost and high security. In this work, a series of litchi-like Ni-Co selenide particles were synthesized via a simple solvothermal method, and the Ni-Co compositions were carefully optimized to tune the charge storage performance, charge storage kinetics, and conductivity for battery-like supercapacitors. Interestingly, the optimal sample Ni0.95Co2.05Se4 exhibits a high capacity of 1038.75 F g-1 at 1 A g-1 and superior rate performance (retains 97.8% of the original capacity at 4 A g-1). Moreover, an asymmetric supercapacitor device was assembled based on the Ni0.95Co2.05Se4 cathode and activated carbon anode. The device of Ni0.95Co2.05Se4//active carbon (AC) reveals a peak energy density of 37.22 W h kg-1, and the corresponding peak power density reaches 800.90 W kg-1. This work provides a facile and effective way to synthesize transition metal selenides as high-performance supercapacitor electrode materials.
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Affiliation(s)
- Bei Jiang
- School of Chemistry and Material Science, Liaoning Shihua University Fushun 113001 Liaoning P. R. China
- College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 Henan China +86 372 2900040
| | - Yang Liu
- School of Chemistry and Material Science, Liaoning Shihua University Fushun 113001 Liaoning P. R. China
- College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 Henan China +86 372 2900040
| | - Jingchao Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 Henan China +86 372 2900040
| | - Yinhuan Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 Henan China +86 372 2900040
| | - Xinyu Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 Henan China +86 372 2900040
| | - Renchun Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 Henan China +86 372 2900040
| | - Liang-Liang Huang
- School of Chemistry and Material Science, Liaoning Shihua University Fushun 113001 Liaoning P. R. China
| | - Daojun Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University Anyang 455000 Henan China +86 372 2900040
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3
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Li B, Xie L, Liu Y, Yao D, Yao L, Deng L. NiCo 2S 4nanosheets decorated on nitrogen-doped hollow carbon nanospheres as advanced electrodes for high-performance asymmetric supercapacitors. NANOTECHNOLOGY 2021; 33:085404. [PMID: 34781279 DOI: 10.1088/1361-6528/ac39c7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Taking advantage of both Faradaic and carbonaceous materials is an efficient way to synthesize composite electrodes with enhanced performance for supercapacitors. In this study, NiCo2S4nanoflakes were grown on the surface of nitrogen-doped hollow carbon nanospheres (NHCSs), forming a NiCo2S4/NHCS composite with a core-shell structure. This three-dimensionally confined growth of NiCo2S4can effectively inhibit its aggregation and facilitate mass transport and charge transfer. Accordingly, the NiCo2S4/NHCS composite exhibited high cycling stability with only 9.2% capacitance fading after 10 000 cycles, outstanding specific capacitance of 902 F g-1at 1 A g-1, and it retained 90.6% of the capacitance at 20 A g-1. Moreover, an asymmetric supercapacitor composed of NiCo2S4/NHCS and activated carbon electrodes delivered remarkable energy density (31.25 Wh kg-1at 750 W kg-1), excellent power density (15003 W kg-1at 21.88 Wh kg-1), and satisfactory cycling stability (13.4% capacitance fading after 5000 cycles). The outstanding overall performance is attributed to the synergistic effect of the NiCo2S4shell and NHSC core, which endows the composite with a stable structure, high electrical conductivity, abundant active reaction sites, and short ion-transport pathways. The synthesized NiCo2S4/NHCS composite is a competitive candidate for the electrodes of high-performance supercapacitors.
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Affiliation(s)
- Bei Li
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, People's Republic of China
| | - Ling Xie
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Yanping Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Dongrui Yao
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, People's Republic of China
| | - Lei Yao
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Libo Deng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
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Gao Y, Tang Y, Liu W, Liu L, Zeng X, Yan S. Sulfur-doped carbon nanotubes with hierarchical micro/mesopores for high performance pseudocapacitive supercapacitors. NANOTECHNOLOGY 2021; 32:505401. [PMID: 34404036 DOI: 10.1088/1361-6528/ac1e52] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Increasing the specific surface area and the amount of doping heteroatoms is an effective means to improve the electrochemical properties of carbon nanotubes (CNTs). The usual activation method makes it difficult for the retention of the heteroatoms while enlarging the specific surface area, and it can be found from literatures that specific surface area and S-content of carbon-based electrode materials are mutually exclusive. Here, CNTs with high specific surface area and sulfur content are constructed by simple activation of sulfonated polymer nanotubes with KHCO3, and the excellent electrochemical performance can be explained by the following points: first, KHCO3can be decomposed into K2CO3, CO2and H2O during the activation process. The synergistic action of physical activation (CO2and H2O) and chemical activation (K2CO3) equips the electrode material with high specific surface area of 1840 m2g-1and hierarchical micro/mesopores, which is beneficial to its double-layer capacitance. Second, compared with reported porous CNTs prepared by chemical activation (KOH) or physical activation (CO2or H2O), the mild activator KHCO3makes the sulfur content at a high level of 4.6 at%, which is very advantageous for high pseudocapacitance performance.
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Affiliation(s)
- Yang Gao
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, People's Republic of China
| | - Yakun Tang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, People's Republic of China
| | - Wei Liu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, People's Republic of China
| | - Lang Liu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, People's Republic of China
| | - Xingyan Zeng
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, People's Republic of China
| | - Siqi Yan
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, People's Republic of China
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Zhang D, Guan Y, Ji P, Lin S, Zheng X, Pu X, Liu W, Yang R, Hu C, Xi Y. High performance of filter capacitor based on nitrogen-doped carbon nanotube supercapacitor. NANOTECHNOLOGY 2020; 31:495601. [PMID: 32990261 DOI: 10.1088/1361-6528/abb1ec] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The high-performance filter capacitor is a hot research topic in the field of filter circuits for flexible and wearable devices, whereas traditional aluminum electrolytic capacitors still experience widespread problems in terms of large error factors and poor stability. To avoid these disadvantages, in this work, we have developed a liquid dual-layer supercapacitor (SC). When it is employed as the filter capacitor in a filter circuit, any waveform signal can be transformed into a linear signal. The maximum fluctuation of the output signal is less than 16 mV; the SC also demonstrates excellent filtering stability in a frequency range of 1 ∼ 100 000 Hz, as well as an amplitude window of 0 ∼ 10 V. In this framework, our filter SC demonstrates unparalleled processing properties, and can greatly improve the stability and extend the lifetime of the entire electronic circuit. The fact that the requirements of high-end electronic products can be fulfilled due to the contribution of this filter SC are particularly significant.
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Affiliation(s)
- Dazhi Zhang
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
| | - Yuzhu Guan
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
- No.1 Senior High School of Panzhou, Guizhou 553500, People's Republic of China
| | - Peiyuan Ji
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
| | - Shiquan Lin
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083 People's Republic of China
| | - Xueli Zheng
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
| | - Xianjie Pu
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
| | - Wenlin Liu
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
| | - Renyu Yang
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
| | - Chenguo Hu
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
| | - Yi Xi
- Department of Applied Physics, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Automotive Engineering, Chongqing University, Chongqing 400044 People's Republic of China
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Xu Q, Wang X, Cheng J, Zhang L, He F, Xie H. Self-template/activation nitrogen-doped porous carbon materials derived from lignosulfonate-based ionic liquids for high performance supercapacitors. RSC Adv 2020; 10:36504-36513. [PMID: 35517918 PMCID: PMC9057050 DOI: 10.1039/d0ra06821g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 09/24/2020] [Indexed: 11/21/2022] Open
Abstract
A simple ion exchange reaction of sodium lignosulfonate (SLS) and 1-allyl-3-methyl imidazolium chloride ([Amim]Cl) produced a new polymeric ionic liquid [Amim]LS and NaCl, and the mixture was successfully used as a precursor to prepare a nitrogen-doped porous carbon material via direct carbonization without any additional activation agent or template. It was believed that the in situ produced NaCl during the precursor synthesis process acted as the self-template and in self-activation. The introduction of imidazolium ionic liquid into the precursor raised the nitrogen content of the obtained carbon material up to 4.68% for a high yield of [Amim]LS-700 carbon material up to 34.6%. The effect of carbonization temperature on the structures and electrochemical properties of the prepared carbon were also studied systematically. It was found that the carbon material exhibits a superior gravimetric capacitance up to 230 F g-1 (0.1 A g-1) at the carbonization temperature of 700 °C, a good energy density of 7.99 W h kg-1 at the power density of 25 W Kg-1, and an excellent cycling stability of 90.3% after 20 000 cycles. This work provides a new path for the value-added utilization of biomass coupled with the field of electrochemical energy storage.
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Affiliation(s)
- Qinqin Xu
- Department of New Energy Materials & Engineering, College of Materials & Metallurgy, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Xia Wang
- Department of New Energy Materials & Engineering, College of Materials & Metallurgy, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Jian Cheng
- Department of New Energy Materials & Engineering, College of Materials & Metallurgy, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Lin Zhang
- Department of New Energy Materials & Engineering, College of Materials & Metallurgy, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Feng He
- Department of New Energy Materials & Engineering, College of Materials & Metallurgy, Guizhou University Huaxi District Guiyang 550025 P. R. China
| | - Haibo Xie
- Department of New Energy Materials & Engineering, College of Materials & Metallurgy, Guizhou University Huaxi District Guiyang 550025 P. R. China
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Zhang Y, Xu R, Qin Z, Feng S, Wang W, Chen C, Ju A. Facile preparation of porous sheet-sheet hierarchical nanostructure NiO/Ni-Co-Mn-O x with enhanced specific capacity and cycling stability for high performance supercapacitors. RSC Adv 2020; 10:22422-22431. [PMID: 35514605 PMCID: PMC9054623 DOI: 10.1039/d0ra03056b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/04/2020] [Indexed: 11/21/2022] Open
Abstract
NiO, Ni–Co–Mn–Ox and NiO/Ni–Co–Mn–Ox on nickel foam substrates were prepared via a chemical bath deposition–calcination. The thermodynamic behavior was observed by TG/DTA. The chemical structure and composition, phase structure and microstructures were tested by XPS, XRD, FE-SEM and TEM. The electrochemical performance was measured by CV, GCD and EIS. The mechanism for formation and enhancing electrochemical performance is also discussed. Firstly, the precursors such as NiOOH, CoOOH and MnOOH grow on nickel foam substrates from a homogeneous mixed solution via chemical bath deposition. Thereafter, these precursors are calcined and decomposed into NiO, Co3O4 and MnO2 respectively under different temperatures in a muffle furnace. Notably, NiO/Ni–Co–Mn–Ox on nickel foam substrates reveals a high specific capacity with 1023.50 C g−1 at 1 A g−1 and an excellent capacitance retention with 103.94% at 5 A g−1 after 3000 cycles in 2 M KOH, its outstanding electrochemical performance and cycling stability are mainly attributed to a porous sheet–sheet hierarchical nanostructure and synergistic effects of pseudo-capacitive materials and excellent redox reversibility. Therefore, this research offers a facile synthesis route to transition metal oxides for high performance supercapacitors. NiO, Ni–Co–Mn–Ox and NiO/Ni–Co–Mn–Ox on nickel foam substrates were prepared via a chemical bath deposition–calcination.![]()
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Affiliation(s)
- Ying Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology Kunming 650093 China +86 871 65161278 +86 871 65160072.,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Ruidong Xu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology Kunming 650093 China +86 871 65161278 +86 871 65160072.,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Ziyang Qin
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Suyang Feng
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology Kunming 650093 China +86 871 65161278 +86 871 65160072.,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Wenbin Wang
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Chen Chen
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Ao Ju
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
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Facile flame deposit of CNFs/Fe2O3 coating on 304 stainless steel mesh and their high capacitive performance. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135527] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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