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Marwat MA, Ishfaq S, Adam KM, Tahir B, Shaikh MH, Khan MF, Abdul Karim MR, Din ZU, Abdullah S, Ghazanfar E. Enhancing supercapacitor performance of Ni-Co-Mn metal-organic frameworks by compositing it with polyaniline and reduced graphene oxide. RSC Adv 2024; 14:2102-2115. [PMID: 38196904 PMCID: PMC10775767 DOI: 10.1039/d3ra07788h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/26/2023] [Indexed: 01/11/2024] Open
Abstract
Metal-organic frameworks (MOFs) are one of the most sought-after materials in the domain of supercapacitors and can be tailored to accommodate diverse compositions, making them amenable to facile functionalization. However, their intrinsic specific capacitance as well as energy density is minimal, which hinders their usage for advanced energy storage applications. Therefore, herein, we have prepared six electrodes, i.e., Ni-Co-Mn MOFs, polyaniline (PANI), and reduced graphene oxide (rGO) along with their novel nanocomposites, i.e., C1, C2, and C3, comprising MOFs : PANI : rGO in a mass ratio of 100 : 1 : 0.5, 100 : 1 : 1, and 100 : 1 : 10, respectively. The polyaniline conducting polymer and rGO enabled efficient electron transport, enhanced charge storage processes, substantial surface area facilitating higher loading of active materials, promoting electrochemical reactions, and ultimately enhanced nanocomposite system performance. As a result, scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques confirmed the successful synthesis and revealed distinct morphological features of the materials. Following electrochemical testing, it was observed that composition C2 exhibited the highest performance, demonstrating a groundbreaking specific capacitance of 1007 F g-1 at 1 A g-1. The device showed a good energy density of 25.11 W h kg-1 and a power density of 860 W kg-1. Remarkably, the device demonstrated a capacity retention of 115% after 1500 cycles, which is a clear indication of the wettability factor, according to the literature. The power law indicated b-values in a range of 0.58-0.64, verifying the hybrid-type behavior of supercapacitors.
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Affiliation(s)
- Mohsin Ali Marwat
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Shaheer Ishfaq
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Kanwar Muhammad Adam
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Bilal Tahir
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Muhammad Hamza Shaikh
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Muhammad Fawad Khan
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Muhammad Ramzan Abdul Karim
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Zia Ud Din
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Syed Abdullah
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
| | - Esha Ghazanfar
- Faculty of Materials and Chemical Engineering, Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology Topi 23640 Pakistan +92-938-281032 +92-938-281026
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2
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Zhou Y, Cai Y, Tu T, Zhang S, Li T, Fang L, Wang D, Liang Y, Wang Z, Jiang Y, Zhou C, Liang B. Expanded Carbon Nanotube Fiber at the Liquid-Air Interface for High-Performance Fiber-Based Supercapacitors and Electrochemical Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41839-41849. [PMID: 37590959 DOI: 10.1021/acsami.3c06815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Carbon nanotube fibers (CNTFs) are widely utilized in flexible and wearable electronics due to their outstanding electrical and mechanical properties. However, the spinning process of CNTFs has limited the CNTs from exposure, leading to an ultralow usage efficiency of individual CNTs. Here, we propose an electrochemical expansion strategy of a single CNTF at the liquid-air interface, forming a macroscopic spindle-shaped CNTF (SS-CNTF) with an enlarged volume of up to 5000-fold upon the spindle. The obtained spindle-shaped structure endows CNTF with a high specific surface area together with excellent conductivity and good mechanical properties. Therefore, the SS-CNTF-based devices exhibit outstanding performances both in energy storage (electrical double-layer supercapacitor, energy density: 11.22 Wh kg-1, power density: 203.9 kW kg-1) and electrochemical sensing (ascorbic acid: 1.26 μA μM-1 cm-2; dopamine: 103.91 μA μM-1 cm-2; uric acid: 11.53 μA μM-1 cm-2). The novel architecture of SS-CNTF prepared by one-step electrochemical expansion at the liquid-air interface enabled its high performance in multiple applications, providing new insight into the development of CNTF-based devices.
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Affiliation(s)
- Yue Zhou
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Yu Cai
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Tingting Tu
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Shanshan Zhang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Tianyu Li
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Lu Fang
- College of Automation, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, P. R. China
| | - Dong Wang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Yitao Liang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Zhaoyang Wang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Yu Jiang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Congcong Zhou
- National Engineering Research Center for Innovation and Application of Minimally Invasive Devices, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P. R. China
| | - Bo Liang
- Biosensor National Special Laboratory, Key Laboratory of Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
- Binjiang Institute of Zhejiang University, Hangzhou 310053, P. R. China
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Jin XY, Ge Q, Cong H, Zhang YQ, Zhao JL, Jiang N. Recent Breakthroughs in Supercapacitors Boosted by Macrocycles. CHEMSUSCHEM 2023; 16:e202300027. [PMID: 36946375 DOI: 10.1002/cssc.202300027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/22/2023] [Indexed: 06/04/2023]
Abstract
Supercapacitors are essential for electrochemical energy storage because of their high-power density, good cycle stability, fast charging and discharging rates, and low maintenance cost. Macrocycles, including cucurbiturils, calixarene, and cyclodextrins, are cage-like organic compounds (with a nanocavity that contains O and N heteroatoms) with unique potential in supercapacitors. Here, we review the applications of macrocycles in supercapacitor systems, and we illustrate the merits of organic macrocycles in electrodes and electrolytes for improving the electrochemical double-layer capacitors and pseudocapacitance via supramolecular strategies. Then, the observed relationships between electrochemical performance and macrocyclic structures are introduced. This comprehensive review describes recent progress on macrocycle-block supercapacitors for researchers.
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Affiliation(s)
- Xian-Yi Jin
- Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine Resources, Guizhou University, Guiyang, 550025, Guizhou, P. R. China
| | - Qingmei Ge
- Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine Resources, Guizhou University, Guiyang, 550025, Guizhou, P. R. China
| | - Hang Cong
- Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine Resources, Guizhou University, Guiyang, 550025, Guizhou, P. R. China
| | - Yun-Qian Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, P. R. China
| | - Jiang-Lin Zhao
- Precision Medicine R&D Center, Zhuhai Institute of Advanced Technology, Chinese Academy of Sciences, Zhuhai, 519080, Guangdong, P. R. China
| | - Nan Jiang
- Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine Resources, Guizhou University, Guiyang, 550025, Guizhou, P. R. China
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Ji Z, Liu C, Xie W, Liu S, Zhang C, Liu F, Sun H, Lu Y, Pan X, Wang C, Wang Z. Interfacial engineered PANI/carbon nanotube electrode for 1.8 V ultrahigh voltage aqueous supercapacitors. NANOTECHNOLOGY 2023; 34:165401. [PMID: 36669198 DOI: 10.1088/1361-6528/acb4f4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/20/2023] [Indexed: 06/17/2023]
Abstract
Flexible three-dimensional interconnected carbon nanotubes on the carbon cloth (3D-CNTs/CC) were obtained through simple magnesium reduction reactions. According to the Nernst equation, the cell voltage based on these pure carbon electrodes without any additives could reach 1.5 V due to the higher di-hydrogen evolution over potential in neutral 3.5 M LiCl electrolytes. In order to improve the electrochemical performance of the electrodes, 3D-CNTs/CC electrodes covered with polyaniline barrier layer (3D-PANI/CNTs/CC) were prepared byin situelectropolymerization using interfacial engineering method. The assembled symmetric supercapacitors display a broadened voltage of 1.8 V, high areal capacitance of 380 mF cm-2, outstanding areal energy density of 85.5μWh cm-2and 84% of its initial capacitance after 20 000 charge-discharge cycles. This work demonstrated that the interface engineering strategy provides a promising way to improve the energy density of carbon-based aqueous supercapacitors by widening the voltage and boosting the capacitance simultaneously.
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Affiliation(s)
- Zhichao Ji
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Congcong Liu
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Wenhe Xie
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Shenghong Liu
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Chao Zhang
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Fuwei Liu
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Haibin Sun
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Yang Lu
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Xuexue Pan
- Guangdong Jiuzhou Energy Storage Technology Co., Ltd, Zhongshan 528437, People's Republic of China
| | - Chunlei Wang
- Key Laboratory of Microelectronics and Energy of Henan Province, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China
| | - Zhuanpei Wang
- Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, People's Republic of China
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5
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Past and present of electrochemical science in Hungary. J Solid State Electrochem 2023. [DOI: 10.1007/s10008-023-05410-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
AbstractThe electrochemistry-related scientific activities in Hungary over the past 3 decades are reviewed. In the first section, we summarize those research areas that are already ceased; in the next section, the ongoing research is discussed; finally, the trends and outlook are highlighted. A special emphasis is put on new experimental methods elaborated in the country.
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Fawad Khan M, Ali Marwat M, Abdullah, Shaheen Shah S, Abdul Karim R, Abdul Aziz M, Ud Din Z, Saad, Muhammad Adam K. Novel MoS2-Sputtered NiCoMg MOFs for High-Performance Hybrid Supercapacitor Applications. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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7
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Cho EC, Chang-Jian CW, Lu CZ, Huang JH, Hsieh TH, Wu NJ, Lee KC, Hsu SC, Weng HC. Bio-Phenolic Resin Derived Porous Carbon Materials for High-Performance Lithium-Ion Capacitor. Polymers (Basel) 2022; 14:575. [PMID: 35160564 PMCID: PMC8840653 DOI: 10.3390/polym14030575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 02/05/2023] Open
Abstract
In this article, hierarchical porous carbon (HPC) with high surface area of 1604.9 m2/g is prepared by the pyrolysis of rubberwood sawdust using CaCO3 as a hard template. The bio-oil pyrolyzed from the rubber sawdust, followed by the polymerization reaction to form resole phenolic resin, can be used as a carbon source to prepare HPC. The biomass-derived HPC shows a three-dimensionally interconnected morphology which can offer a continuous pathway for ionic transport. The symmetrical supercapacitors based on the as-prepared HPC were tested in 1.0 M tetraethylammonium tetrafluoroborate/propylene carbonate electrolyte. The results of electrochemical analysis show that the HPC-based supercapacitor exhibits a high specific capacitance of 113.3 F/g at 0.5 A/g with superior rate capability and cycling stability up to 5000 cycles. Hybrid lithium-ion capacitors (LICs) based on the HPC and Li4Ti5O12 (LTO) were also fabricated. The LICs have a maximum energy density of 113.3 Wh/kg at a power density of 281 W/kg. Moreover, the LIC also displays a remarkable cycling performance with a retention of 92.8% after 3000 cycles at a large current density of 0.75 A/g, suggesting great potential application in the energy storage of the LIC.
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Affiliation(s)
- Er-Chieh Cho
- Department of Clinical Pharmacy, School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei City 110, Taiwan;
| | - Cai-Wan Chang-Jian
- Department of Mechanical and Automation Engineering, I-Shou University, No. 1, Sec. 1, Syuecheng Rd., Dashu District, Kaohsiung City 84001, Taiwan;
| | - Cheng-Zhang Lu
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, No. 195, Chung Hsing Road, Chutung, Hsinchu 31040, Taiwan;
| | - Jen-Hsien Huang
- Department of Green Material Technology, Green Technology Research Institute, CPC Corporation, No. 2, Zuonan Rd., Nanzi District, Kaohsiung City 81126, Taiwan; (J.-H.H.); (T.-H.H.)
| | - Tzu-Hsien Hsieh
- Department of Green Material Technology, Green Technology Research Institute, CPC Corporation, No. 2, Zuonan Rd., Nanzi District, Kaohsiung City 81126, Taiwan; (J.-H.H.); (T.-H.H.)
| | - Nian-Jheng Wu
- CNRS, Institut des Sciences Moléculaires d’Orsay, Université Paris-Saclay, 91405 Orsay, France;
| | - Kuen-Chan Lee
- Department of Science Education, National Taipei University of Education, No. 134, Sec. 2, Heping E. Rd., Da-an District, Taipei City 106, Taiwan
- College of Medical Science and Technology, Taipei Medical University, Taipei City 110, Taiwan
| | - Shih-Chieh Hsu
- Department of Chemical and Materials Engineering, Tamkang University, No. 151, Yingzhuan Road, Tamsui District, New Taipei City 25137, Taiwan
| | - Huei Chu Weng
- Department of Mechanical Engineering, Chung Yuan Christian University, No. 200, Chungpei Road, Chungli District, Taoyuan City 32023, Taiwan
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Zhuo JL, Wang YL, Wang YG, Xu MQ, Sha JQ. Surfactant-assisted fabrication and supercapacitor performances of a 12-phosphomolybdate-pillared metal–organic framework containing a helix and its SWNT nanocomposites. CrystEngComm 2022. [DOI: 10.1039/d1ce01471d] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By employing a surfactant-assisted hydrothermal method, a new POMOF with a multi-fold helix was obtained, and NiPMo12/SWNTs exhibits excellent electrochemical performance and good stability as an electrode material for supercapacitors.
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Affiliation(s)
- Jin-Long Zhuo
- College of Materials Science & Engineering, Jiamusi University, HeilongJiang, Jiamusi, 154007, P.R. China
- School of Chemistry, Chemical Engineering and Materials, Jining University, Shandong, Qufu, 273155, P. R. China
| | - Yun-Liang Wang
- College of Materials Science & Engineering, Jiamusi University, HeilongJiang, Jiamusi, 154007, P.R. China
| | - Yu-Guang Wang
- School of Chemistry, Chemical Engineering and Materials, Jining University, Shandong, Qufu, 273155, P. R. China
| | - Ming-Qi Xu
- College of Materials Science & Engineering, Jiamusi University, HeilongJiang, Jiamusi, 154007, P.R. China
- School of Chemistry, Chemical Engineering and Materials, Jining University, Shandong, Qufu, 273155, P. R. China
| | - Jing-Quan Sha
- College of Materials Science & Engineering, Jiamusi University, HeilongJiang, Jiamusi, 154007, P.R. China
- School of Chemistry, Chemical Engineering and Materials, Jining University, Shandong, Qufu, 273155, P. R. China
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Kiefer R, Elhi F, Peikolainen AL, Tamm T. Wider Potential Windows of Cellulose Multiwall Carbon Nanotube Fibers Leading to Qualitative Multifunctional Changes in an Organic Electrolyte. Polymers (Basel) 2021; 13:4439. [PMID: 34960990 PMCID: PMC8708784 DOI: 10.3390/polym13244439] [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: 11/05/2021] [Revised: 12/07/2021] [Accepted: 12/13/2021] [Indexed: 11/29/2022] Open
Abstract
The trend across the whole of society is to focus on natural and/or biodegradable materials such as cellulose (Cell) over synthetic polymers. Among other usage scenarios, Cell can be combined with electroactive components such as multiwall carbon nanotubes (CNT) to form composites, such as Cell-CNT fibers, for applications in actuators, sensors, and energy storage devices. In this work, we aim to show that by changing the potential window, qualitative multifunctionality of the composites can be invoked, in both electromechanical response as well as energy storage capability. Cell-CNT fibers were investigated in different potential ranges (0.8 V to -0.3 V, 0.55 V to -0.8 V, 1 V to -0.8 V, and 1.5 V to -0.8 V), revealing the transfer from cation-active to anion-active as the potential window shifted towards more positive potentials. Moreover, increasing the driving frequency also shifts the mode from cation- to anion-active. Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy were conducted to determine the ion species participating in charge compensation under different conditions.
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Affiliation(s)
- Rudolf Kiefer
- Conducting Polymers in Composites and Applications Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
| | - Fred Elhi
- Intelligent Materials and Systems Lab, Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia; (F.E.); (A.-L.P.); (T.T.)
| | - Anna-Liisa Peikolainen
- Intelligent Materials and Systems Lab, Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia; (F.E.); (A.-L.P.); (T.T.)
| | - Tarmo Tamm
- Intelligent Materials and Systems Lab, Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia; (F.E.); (A.-L.P.); (T.T.)
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Pajkossy T, Mészáros G. Connection of CVs and impedance spectra of reversible redox systems, as used for the validation of a dynamic electrochemical impedance spectrum measurement system. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04661-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AbstractWith the purpose of fast characterization of electrode reactions, a dynamic electrochemical impedance spectrum (dEIS) measurement system has been assembled which permits the continuous collection of audio-frequency impedance spectra while performing cyclic voltammetry measurements with the usual scan rates of up to 200 mV/s. The performance of this system was tested by analyzing the CV curves and impedance spectra taken simultaneously in ferro-/ferricyanide containing aqueous solutions yielding an experimental demonstration of the connection of the semi-integrated reversible voltammograms and the Warburg coefficients.
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