| 李智,陈伟达,李婷,蒋东阳,肖泽琛,周烈兴,叶乾旭,付光,蔡金明.化学通报,2024,87(4):490-498,455. |
| 氢气还原制备高电容多孔Mn3O4/rGO复合材料 |
| Preparation of High Capacity Porous Mn3O4/RGO Composite Materials by Hydrogen Reduction |
| 投稿时间：2023-10-08 修订日期：2023-11-14 |
| DOI： |
| 中文关键词: Mn3O4/RGO复合材料 多孔Mn3O4 超级电容器 氢气还原 |
| 英文关键词:Mn3O4/RGO composite material Porous Mn3O4 Supercapacitors Hydrogen reduction |
| 基金项目:云南省基础研究计划项目(202201BE070001-017,202001AU070024)和国家自然科学基金项目(62271238,52166001)资助 |
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| 中文摘要: |
| Mn3O4资源丰富、结构稳定，具有较高的理论电容，是一种较有潜力的超级电容器材料，但其较差的导电性却阻碍了其在这方面应用。本论文以实心ε-MnO2微米粉体和具有亲水性的GO粉体为原料，在去离子水中通过磁力搅拌和冷冻干燥制备出具有良好接触的MnO2/GO复合粉体。然后经一步氢气还原处理，使实心ε-MnO2和GO同步转化为具有纳米多孔结构的多孔Mn3O4和RGO，从而获得分散均匀、具有高比表面积和优良导电性的高性能Mn3O4/RGO复合粉体。经电化学测试可知，Mn3O4/RGO复合粉体在2 mV/s的扫描速率下的比电容为25.2 F/g且具有较好的电容留存率。 |
| 英文摘要: |
| Mn3O4 has abundant resources, a stable structure, and high theoretical capacitance, making it a promising supercapacitor material. However, its poor conductivity hinders its application in this field. In this work, solid-form ε-MnO2 micron powders and hydrophilic GO powders were used as raw materials to prepare MnO2/GO composite powders with good contact by magnetic stirring and freeze drying in deionized water. Then, through a one-step hydrogen reduction treatment, the solid ε-MnO2 and GO were synchronously converted into porous Mn3O4 and RGO with nanoporous structures, thereby obtaining high-performance Mn3O4/RGO composite powders with uniform dispersion, high specific surface area, and excellent conductivity. The electrochemical test shows that the specific capacitance of Mn3O4/RGO composite powder is 25.2 F/g at the scanning rate of 2 mV/s and has good capacitance retention. |
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