Stabilization of layered manganese oxide by substitutional cation doping
文献类型：期刊论文
| 作者 | Hu, ZM; Chen, M; Zhang, H; Huang, L; Liu, KS; Ling, YS; Zhou, H; Jiang, Z; Feng, G; Zhou, J |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2019 |
| 卷号 | 7期号:12页码:7118—7127 |
| 关键词 | HIGH-PERFORMANCE MNO2 NANOSHEETS GRAPHENE/MNO2 NANOSTRUCTURES INTERCALATION ALPHA-MNO2 TRANSITION ELECTRODES DELTA-MNO2 LITHIUM |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta12515e |
| 文献子类 | 期刊论文 |
| 英文摘要 | Manganese oxides (-MnO2) with a layered structure are considered as potential electrode materials due to the presence of an extra ion transport channel between interlayers. However, their dissolution and structure collapse during the electrochemical charge and discharge process usually lead to rapid capacity fading. In this study, we designed a metal-ion (Ba2+, Sn2+, Co3+ and Ni2+)-doped two dimensional (2D) -MnO2 to improve the stability of the layered structure. Both the experimental and the theoretical calculations indicated that Co3+ and Ni2+-doped 2D -MnO2 (2D Co-KMnO and Ni-KMnO, respectively), obtained via a substitutional doping route (by replacing the Mn atom), could efficiently stabilize the layered structure. Moreover, the 2D Co-KMnO electrode material exhibited a high specific capacitance (342.7 F g(-1)) and excellent cycling performance, with 95.3% capacitance retention after 20000 cycles at the current density of 5 A g(-1). This study revealed the mechanism of the effect of the doping behavior of metal ions on the crystal stability of metal oxides, possibly paving a new path for the rational design of other robust functional nanomaterials. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31825]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China; 2.Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Sch Energy & Power Engn, Wuhan 430074, Hubei, Peoples R China; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, ZM,Chen, M,Zhang, H,et al. Stabilization of layered manganese oxide by substitutional cation doping[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(12):7118—7127. |
| APA | Hu, ZM.,Chen, M.,Zhang, H.,Huang, L.,Liu, KS.,...&Zhou, J.(2019).Stabilization of layered manganese oxide by substitutional cation doping.JOURNAL OF MATERIALS CHEMISTRY A,7(12),7118—7127. |
| MLA | Hu, ZM,et al."Stabilization of layered manganese oxide by substitutional cation doping".JOURNAL OF MATERIALS CHEMISTRY A 7.12(2019):7118—7127. |
入库方式： OAI收割
来源：上海应用物理研究所
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