Effects of electrode thickness and crystal water on pseudocapacitive performance of layered birnessite MnO2
文献类型：期刊论文
| 作者 | Li, Xu1,2; Xiang, Lu1,2; Xie, Xiong1,2; Zhang, Chunyang2; Liu, Shuangyi2 ; Li, Zhenhu2; Shen, Jun1
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| 刊名 | NANOTECHNOLOGY
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| 出版日期 | 2020-05-22 |
| 卷号 | 31期号:21页码:8 |
| 关键词 | birnessite thickness effect crystal water effect supercapacitor |
| ISSN号 | 0957-4484 |
| DOI | 10.1088/1361-6528/ab73bf |
| 通讯作者 | Li, Zhenhu(lizhenhu@cigit.ac.cn) ; Shen, Jun(shenjun@cqu.edu.cn) |
| 英文摘要 | Manganese dioxide (MnO2) nanomaterials with two-dimensional (2D) layered birnessite structures are promising pseudocapacitive electrode materials. However, the effects of structural factors on their electrochemical performance is not fully understood. We synthesize alkali-free crystal water containing 2D layered birnessite MnO2 electrodes with controllable mass loading from 0.1 to 19.3 mg cm(-2) to investigate the effects of electrode thickness and crystal water functions on crystal structure and pseudocapacitive behavior, to promote its industrialization. We find that the crystal water enlarges the interlayer space of birnessite MnO2 with electrolyte ions transported much more easily, resulting in higher specific capacitance of 702 F g(-1) (70.2 mF cm(-2)) and excellent cycling stability of 20 000 charge-discharge cycles even at a mass loading of up to 10.8 mg cm(-2). Such gains in specific capacitance are weakened significantly with raised mass loading. Thus, compared to a carbon cloth substrate, a carbon nanotube film with enhanced electron space transport capability presents better performance, indicating an effective strategy for higher mass loading cases. The present work sheds light on an efficient method for achieving high capacitance and mass loading together, for practical applications. |
| 资助项目 | National Natural Science Foundation of China[21875245] ; Program of Hundred Talents of the Chinese Academy of Sciences[2018CDGFCL0003] ; Fundamental, a Fundamental Research Funds for the Central Universities of China[2018CDGFCL0003] ; Industry Joint Technology Innovation Project of Suzhou of China in 2017 |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000519974100001 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/10576]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Li, Zhenhu; Shen, Jun |
| 作者单位 | 1.Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Multiscale Mfg Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xu,Xiang, Lu,Xie, Xiong,et al. Effects of electrode thickness and crystal water on pseudocapacitive performance of layered birnessite MnO2[J]. NANOTECHNOLOGY,2020,31(21):8. |
| APA | Li, Xu.,Xiang, Lu.,Xie, Xiong.,Zhang, Chunyang.,Liu, Shuangyi.,...&Shen, Jun.(2020).Effects of electrode thickness and crystal water on pseudocapacitive performance of layered birnessite MnO2.NANOTECHNOLOGY,31(21),8. |
| MLA | Li, Xu,et al."Effects of electrode thickness and crystal water on pseudocapacitive performance of layered birnessite MnO2".NANOTECHNOLOGY 31.21(2020):8. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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