| 张素风,呼旭旭,周秋生,魏宁,李庆鲁.MnO2纳米片功能化修饰的氮掺杂碳纤维电化学性能研究[J].中国造纸学报,2022,37(1):36-42 |
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| MnO2纳米片功能化修饰的氮掺杂碳纤维电化学性能研究 |
| Study on Electrochemical Performance of Nitrogen-doped Carbon Fiber Functionally Modified by MnO2 Nanosheets |
| 投稿时间：2021-09-14 |
| DOI：10.11981/j.issn.1000-6842.2022.01.36 |
| 中文关键词: 细菌纤维素 MnO2 氮掺杂 电化学性能 |
| Key Words:bacterial cellulose MnO2 nitrogen doping electrochemical performance |
| 基金项目: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）。 |
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| 中文摘要: |
以细菌纤维素（BC）为模板原位生长聚吡咯，再将其高温碳化以得到高导电性能的氮掺杂碳纤维（NCF），通过水热反应将MnO2纳米片修饰到NCF表面，形成核壳结构的MnO2纳米片包裹氮掺杂碳纤维（NCF/MnO2），并对其进行理化分析。结果表明，相对于纯δ![]() ![]() -MnO2，NCF/MnO2具有更优异的电化学性能，在1 A/g的电流密度下，其比电容达到193.2 F/g；在10 A/g的电流密度下进行10000次恒流充放电后，其比电容保持率为107%，具有优异的循环稳定性；NCF的引入能极大提高MnO2电化学性能，为MnO2电极材料的发展提供理论依据。 |
| 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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