Microwave-Hydrothermal Crystallization of Polymorphic MnO2 for Electrochemical Energy Storage
文献类型：期刊论文
| 作者 | Chen KF ; Noh YD ; Li KY ; Komarneni S ; Xue DF |
| 刊名 | journal of physical chemistry c
 |
| 出版日期 | 2013 |
| 卷号 | 117期号:20页码:10770-10779 |
| ISSN号 | 1932-7447 |
| 关键词 | LITHIUM-ION BATTERIES ELECTRODE MATERIALS PERFORMANCE BETA-MNO2 ALPHA-MNO2 NANOWIRES ANODE SUPERCAPACITORS POWDERS ROUTE |
| 通讯作者 | xue df |
| 中文摘要 | we report a coupled microwave hydrothermal process to crystallize polymorphs of mno2 such as alpha-, beta- and gamma-phase samples with plate-, rod-, and wirelike shapes, by a controllable redox reaction in mncl2-kmno4 aqueous solution system. mncl2-kmno4 redox reaction system was for the first time applied to mno2 samples under the coupled microwave hydrothermal conditions, which shows clear advantages such as shorter reaction time, well crystallized polymorphic mno2, and good electrochemical performances as electrode materials for lithium ion batteries. for comparison, we also did separate reactions with hydrothermal only and microwave only in our designed mncl2 kmno4 aqueous system. the present results indicate that mncl2 kmno4 reaction system can selectively lead to alpha-, and gamma-phase mno2, and the as-crystallized mno2 samples can show interesting electrochemical performances for both lithium ion batteries and supercapacitors. electrochemical measurements show that the as crystallized mno2 supercapacitors have faradaic reactivity sequence alpha- > gamma- > beta-mno2 upon their tunnel structures, the intercalation deintercalation reactivity of these mno2 cathodes follows the order gamma- > alpha- > beta-phase, and the conversion reactivity of these mno2 anodes follows the order gamma- > alpha- > beta-phase. mncl2-kmno4 reaction system can also lead to the mixed phase mno2 (beta- and gamma-mno2), which can provide better anode performances for lithium -ion batteries. the current work deepens the fundamental understanding of several aspects of physical chemistry, for example, the chemical reaction controllable synthesis, crystal structure selection, electrochemical property improvement, and electrochemical reactivity, as well as their correlations. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000319649400063 |
| 公开日期 | 2014-04-15 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/49848]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen KF,Noh YD,Li KY,et al. Microwave-Hydrothermal Crystallization of Polymorphic MnO2 for Electrochemical Energy Storage[J]. journal of physical chemistry c,2013,117(20):10770-10779. |
| APA | Chen KF,Noh YD,Li KY,Komarneni S,&Xue DF.(2013).Microwave-Hydrothermal Crystallization of Polymorphic MnO2 for Electrochemical Energy Storage.journal of physical chemistry c,117(20),10770-10779. |
| MLA | Chen KF,et al."Microwave-Hydrothermal Crystallization of Polymorphic MnO2 for Electrochemical Energy Storage".journal of physical chemistry c 117.20(2013):10770-10779. |
入库方式： OAI收割
来源：长春应用化学研究所
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