Pseudocapacitive desalination via valence engineering with spindle-like manganese oxide/carbon composites
文献类型：期刊论文
| 作者 | Xu, Yingsheng1,2; Xiang, Shuhong1,2; Mao, Hengjian1,2; Zhou, Hongjian1; Wang, Guozhong1 ; Zhang, Haimin1; Zhao, Huijun1,3
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| 刊名 | NANO RESEARCH
 |
| 出版日期 | 2021-05-19 |
| ISSN号 | 1998-0124 |
| 关键词 | capacitive deionization manganese oxides Faradic electrode desalination valence engineering |
| DOI | 10.1007/s12274-021-3467-z |
| 通讯作者 | Zhou, Hongjian(hjzhou@issp.ac.cn) ; Zhang, Haimin(zhanghm@issp.ac.cn) |
| 英文摘要 | Manganese tetravalent oxide (MnO2), a superstar Faradic electrode material, has been investigated extensively for capacitive desalination, enabling higher salt adsorption capacity compared to the great majority of carbonous electrodes. However, few works paid attention on the relationship between the valences of manganese oxide and their desalination performance. For the first time, we prepared the spindle-like manganese oxides/carbon composites with divalent (MnO@C), trivalent (Mn2O3@C) and divalent/ trivalent (Mn3O4@C) manganese by pyrolysis of manganese carbonate precursor under different condition, respectively. The electrochemical behavior in three-electrode system and electrosorption performance obtained in hybrid membrane capacitive deionization (HMCDI) cells assembled with capacitive carbon electrodes were systematically evaluated, respectively. High salt adsorption capacity (as large as 31.3, 22.2, and 18.9 mg.g(-1)) and corresponding average salt adsorption rates (0.83, 0.53, and 1.71 mg.g(-1) min(-1)) were achieved in 500 mg L-1 NaCl solution for MnO@C, Mn2O3@C, and Mn3O4@C, respectively. During fifteen electrosorption-desorption cycles, ex-situ water contact angle and morphology comparison analysis demonstrated the superior cycling durability of the manganese oxide electrodes and subtle difference between their surface redox. Furthermore, density functional theory (DFT) was also conducted to elaborate the disparity among the valence states of manganese (+2, +3 and +2/+3) for in-depth understanding. This work introduced manganese oxide with various valences to blaze new trails for developing novel Faradic electrode materials with high-efficiency desalination performance by valence engineering. |
| WOS关键词 | NITROGEN-DOPED CARBON ; CAPACITIVE DEIONIZATION ; ANODE MATERIALS ; MEMBRANE DISTILLATION ; SUPERCAPACITOR ; NANOPARTICLES ; ELECTRODE ; WATER ; MNO2 |
| 资助项目 | National Key R&D Program of China[2017YFA0207202] ; National Natural Science Foundation of China[51872291] ; National Natural Science Foundation of China[51872292] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | TSINGHUA UNIV PRESS |
| WOS记录号 | WOS:000652107900001 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/122285]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhou, Hongjian; Zhang, Haimin |
| 作者单位 | 1.Chinese Acad Sci, Anhui Key Lab Nanomat & Nanotechnol, Ctr Environm & Energy Nanomat,Inst Solid State Ph, Key Lab Mat Phys,CAS Ctr Excellence Nanosci,HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China 3.Griffith Univ, Ctr Clean Environm & Energy, Gold Coast Campus, Gold Coast, Qld 4222, Australia |
| 推荐引用方式 GB/T 7714 | Xu, Yingsheng,Xiang, Shuhong,Mao, Hengjian,et al. Pseudocapacitive desalination via valence engineering with spindle-like manganese oxide/carbon composites[J]. NANO RESEARCH,2021. |
| APA | Xu, Yingsheng.,Xiang, Shuhong.,Mao, Hengjian.,Zhou, Hongjian.,Wang, Guozhong.,...&Zhao, Huijun.(2021).Pseudocapacitive desalination via valence engineering with spindle-like manganese oxide/carbon composites.NANO RESEARCH. |
| MLA | Xu, Yingsheng,et al."Pseudocapacitive desalination via valence engineering with spindle-like manganese oxide/carbon composites".NANO RESEARCH (2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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