纳米MnO2的制备及其电化学性能研究
加入不同浓度的十二烷基磺酸钠表面活性剂（SDS）改变微乳液溶液介质，用苯胺还原高锰酸钾，制备了不同颗粒大小的纳米片状MnO2材料,采用X射线粉末衍射、氮吸附比表面测试和扫描电镜及透射电镜表征观察合成材料．电化学测试表明，0．20mol·L^-1SDS所合成的纳米MnO2比表面约为228．2m^2·g^-1，在1mol·L^-1Li2SO4电解液中，该电极比电容达到237F·g^-1（0．1A·g^-1），350℃煅烧MnO2电极还可发生可逆Li^＋嵌脱反应增加其比电容．...
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| Published in | 电化学 Vol. 18; no. 4; pp. 295 - 300 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
28.08.2012
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1006-3471 2993-074X |
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| Abstract | 加入不同浓度的十二烷基磺酸钠表面活性剂（SDS）改变微乳液溶液介质，用苯胺还原高锰酸钾，制备了不同颗粒大小的纳米片状MnO2材料,采用X射线粉末衍射、氮吸附比表面测试和扫描电镜及透射电镜表征观察合成材料．电化学测试表明，0．20mol·L^-1SDS所合成的纳米MnO2比表面约为228．2m^2·g^-1，在1mol·L^-1Li2SO4电解液中，该电极比电容达到237F·g^-1（0．1A·g^-1），350℃煅烧MnO2电极还可发生可逆Li^＋嵌脱反应增加其比电容． |
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| AbstractList | 加入不同浓度的十二烷基磺酸钠表面活性剂（SDS）改变微乳液溶液介质，用苯胺还原高锰酸钾，制备了不同颗粒大小的纳米片状MnO2材料,采用X射线粉末衍射、氮吸附比表面测试和扫描电镜及透射电镜表征观察合成材料．电化学测试表明，0．20mol·L^-1SDS所合成的纳米MnO2比表面约为228．2m^2·g^-1，在1mol·L^-1Li2SO4电解液中，该电极比电容达到237F·g^-1（0．1A·g^-1），350℃煅烧MnO2电极还可发生可逆Li^＋嵌脱反应增加其比电容． |
| Author | 吴雯 周丹丹 侯孟炎 夏永姚 |
| AuthorAffiliation | 复旦大学分子催化与功能材料上海市重点实验室,化学系,新能源研究院,上海200433 |
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| DocumentTitleAlternate | Preparation and Electrochemical Performance of Nanostructured MnO2 Materials |
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| Notes | 35-1172/06 Nanostructured MnO2 materials were prepared in a micro-emulsion medium using sodium dodecyl sulfate （SDS）as surfactant by a redox reaction between potassium permanganate and aniline. The morpholo- gies of the obtained MnOz were critically dependent on the concentrations of SDS. The particle size varied with the change in the micro-emulsion medium. The optimized properties of MnO2 material obtained with the surfactant concentration of 0.2mol·L^-1 had a specific surface area of 228.2 m^2·g^-1, and delivered a specific capacitance of 237F·g^-1 in 1mol·L^-1 Li2SO4. Additionally, a reversible Li-ion intercalation reaction oc-curred in the MnO2 calcined at 350 ℃. WU Wen, ZHOU Dan-dan, HOU Meng-yan, XIA Yong-yao （ Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Institute of New Energy, Fudan University, Shanghai 200433, China） micro-emulsion method; pseudo-capacitance; nanostructured MnO2 ; intercalation reaction ; su-percapacitor |
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| PublicationTitle | 电化学 |
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| SubjectTerms | 嵌入反应 微乳液法 纳米MnO2 赝电容 超电容器 |
| Title | 纳米MnO2的制备及其电化学性能研究 |
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