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Heng Y, Xie T, Wang X, Chen D, Wen J, Chen X, Hu D, Wang N, Wu YA. Raw cellulose/polyvinyl alcohol blending separators prepared by phase inversion for high-performance supercapacitors. NANOTECHNOLOGY 2021; 32:095403. [PMID: 33203815 DOI: 10.1088/1361-6528/abcb62] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of a biodegradable cellulose-based separator with excellent performance has been of great research significance and application potential for the green development of supercapacitors. Herein, the regenerated porous cellulose/Polyvinyl alcohol films (CP-10, CP-15, CP-20, CP-25) with different mass ratio were successfully fabricated by a simple blending and phase inversion process. Their electrochemical properties as separators in assembled supercapacitor were evaluated. Fourier transform infrared spectroscopy and x-ray diffraction analysis indicate that intermolecular and intramolecular hydrogen bonding existed between cellulose and polyvinyl alcohol of the CP films. Compared with other CP films, the CP-20 film shows higher mechanical strength (28.02 MPa), better wettability (79.06°), higher porosity (59.69%) and electrolyte uptake (281.26 wt%). These properties of CP-20 are expected to show better electrochemical performance as separator. Indeed, the electrochemical tests, including electrochemical impedance spectroscopy, cyclic voltammetry, galvanostatic charge discharge, demonstrate that the SC-20 capacitor (with CP-20 as separator) shows the lowest equivalent series resistance of 0.57 Ω, the highest areal capacitance of 1.98 F cm-2 at 10 mV s-1, specific capacitance of 134.41 F g-1 and charge-discharge efficiency of 98.62% at 1 A g-1 among the four capacitors with CP films as separators. Comparing the assembled SC-40 and SC-30 with two commercial separators (TF4040 and MPF30AC) and SC-PVA with Polyvinyl alcohol (PVA) separator, the CV and GCD curves of SC-20 maintain the quasi rectangular and symmetrical triangular profiles respectively at different scan rates in potential window of 0-1 V. SC-20 exhibits the highest value of 28.24 Wh kg-1 at 0.5 A g-1 with a power density of 0.26 kW kg-1, and 13.41 Wh kg-1 at 10 A g-1 with a power density of 6.04 kW kg-1. SC-20 also shows the lowest voltage drop and the highest areal and specific capacitance. Moreover, SC-20 maintains the highest value of 86.81% after 4000 cycles compared to 21.18% of SC-40, 75.07% of SC-30, and 6.66% of SC-PVA, showing a superior rate capability of a supercapacitor. These results indicate that CP films can be served as promising separators for supercapacitors.
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Affiliation(s)
- Yingqi Heng
- Wood Industry Research Institute, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, People's Republic of China
| | - Tianqi Xie
- Wood Industry Research Institute, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, People's Republic of China
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Ding Chen
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, Guangxi, People's Republic of China
| | - Jiahao Wen
- Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials-Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, People's Republic of China
| | - Xiyong Chen
- Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials-Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, People's Republic of China
| | - Dongying Hu
- Wood Industry Research Institute, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, People's Republic of China
| | - Nannan Wang
- Guangxi Institute Fullerene Technology (GIFT), Key Laboratory of New Processing Technology for Nonferrous Metals and Materials-Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, People's Republic of China
| | - Yimin A Wu
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
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Wong CY, Wong WY, Loh KS, Daud WRW, Lim KL, Khalid M, Walvekar R. Development of Poly(Vinyl Alcohol)-Based Polymers as Proton Exchange Membranes and Challenges in Fuel Cell Application: A Review. POLYM REV 2019. [DOI: 10.1080/15583724.2019.1641514] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Chun Yik Wong
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, Selangor, Malaysia
| | - Wai Yin Wong
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, Selangor, Malaysia
| | - Kee Shyuan Loh
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, Selangor, Malaysia
| | | | - Kean Long Lim
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, Selangor, Malaysia
| | - Mohammad Khalid
- Graphene & Advanced 2D Materials Research Group (GAMRG), Sunway University, Selangor, Malaysia
| | - Rashmi Walvekar
- School of Engineering, Faculty of Innovation and Technology, Taylor’s University Lakeside, Campus, Selangor, Malaysia
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Liu C, Shao Z, Wang J, Lu C, Wang Z. Eco-friendly polyvinyl alcohol/cellulose nanofiber–Li+ composite separator for high-performance lithium-ion batteries. RSC Adv 2016. [DOI: 10.1039/c6ra18471e] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A PVA/CNF–Li composite separator presented excellent porosity, ionic conductivity, electrolyte wettability, thermal stability and remarkable cycling ability.
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Affiliation(s)
- Chuanting Liu
- School of Material Science and Engineering
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Ziqiang Shao
- Beijing Engineering Research Centre of Cellulose and Its Derivatives
- Beijing 100081
- China
| | - Jianquan Wang
- Beijing Engineering Research Centre of Cellulose and Its Derivatives
- Beijing 100081
- China
| | - Chengyi Lu
- Beijing Key Laboratory for Chemical Power Source and Green Catalysis
- School of Chemical Engineering and Environment
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Zhenhua Wang
- Beijing Key Laboratory for Chemical Power Source and Green Catalysis
- School of Chemical Engineering and Environment
- Beijing Institute of Technology
- Beijing 100081
- China
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