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| Study on Electrochemical Performance of Nitrogen-doped Carbon Fiber Functionally Modified by MnO2 Nanosheets |
| Received:September 14, 2021 |
| DOI：10.11981/j.issn.1000-6842.2022.01.36 |
| Key Words:bacterial cellulose;MnO2;nitrogen doping;electrochemical performance |
| Fund Project:陕西省重点产业创新链项目（2020ZDLGY11-03）；生物质化学与材料国际联合研究中心（2018GHJD-19）；西安市未央区科技计划（201910）；国家自然科学基金（22008149）；陕西省教育厅一般专项科研计划（20JK0537）。 |
| Author Name | Affiliation | Postcode | | ZHANG Sufeng* | College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | HU Xuxu | College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | ZHOU Qiusheng | College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | WEI Ning | College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 | | LI Qinglu | College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 | 710021 |
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| Abstract: |
Bacterial cellulose （BC） was used as template to grow polypyrrole in situ which was then carbonized at high temperature to prepare nitrogen-doped carbon fiber （NCF） with high conductivity. The surface of the as-prepared NCF was modified by MnO2 nanosheets through hydrothermal reaction to obtain a core-shell-structured nitrogen-doped carbon fiber （NCF/MnO2） which was then subjected to physical and chemical analysis. The results showed that compared with pure δ![]() ![]() -MnO2， NCF/MnO2 was of better electrochemical performance： the specific capacitance of which reached 193.2 F/g at current density of 1 A/g； the specific capacitance retention rate was 107% after constant current charging-discharging cycles of 10000 （current density of 10 A/g）， exhibiting excellent cycling stability. Therefore， the introduction of NCF can greatly improve the electrochemical performance of MnO2 and the results of which provide a research basis for the development of MnO2 electrode materials. |
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