A medium-entropy transition metal oxide cathode for high-capacity lithium metal batteries
文献类型：期刊论文
| 作者 | Pei, Yi; Chen, Qing; Wang, Meiyu; Zhang, Pengjun; Ren, Qingyong; Qin, Jingkai; Xiao, Penghao; Song, Li; Chen, Yu; Yin, Wen
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| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2022 |
| 卷号 | 13期号:1页码:6158 |
| DOI | 10.1038/s41467-022-33927-0 |
| 文献子类 | Article |
| 英文摘要 | The limited capacity of the positive electrode active material in non-aqueous rechargeable lithium-based batteries acts as a stumbling block for developing high-energy storage devices. Although lithium transition metal oxides are high-capacity electrochemical active materials, the structural instability at high cell voltages (e.g., >4.3 V) detrimentally affects the battery performance. Here, to circumvent this issue, we propose a Li1.46Ni0.32Mn1.2O4-x (0 < x < 4) material capable of forming a medium-entropy state spinel phase with partial cation disordering after initial delithiation. Via physicochemical measurements and theoretical calculations, we demonstrate the structural disorder in delithiated Li1.46Ni0.32Mn1.2O4-x, the direct shuttling of Li ions from octahedral sites to the spinel structure and the charge-compensation Mn3+/Mn4+ cationic redox mechanism after the initial delithiation. When tested in a coin cell configuration in combination with a Li metal anode and a LiPF6-based non-aqueous electrolyte, the Li1.46Ni0.32Mn1.2O4-x-based positive electrode enables a discharge capacity of 314.1 mA h g(-1) at 100 mA g(-1) with an average cell discharge voltage of about 3.2 V at 25 +/- 5 degrees C, which results in a calculated initial specific energy of 999.3 Wh kg(-1) (based on mass of positive electrode's active material). |
| 电子版国际标准刊号 | 2041-1723 |
| 语种 | 英语 |
| WOS记录号 | WOS:000870349500016 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299961]  |
| 专题 | 高能物理研究所_东莞分部 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Pei, Yi,Chen, Qing,Wang, Meiyu,et al. A medium-entropy transition metal oxide cathode for high-capacity lithium metal batteries[J]. NATURE COMMUNICATIONS,2022,13(1):6158. |
| APA | Pei, Yi.,Chen, Qing.,Wang, Meiyu.,Zhang, Pengjun.,Ren, Qingyong.,...&Xu, Cheng-Yan.(2022).A medium-entropy transition metal oxide cathode for high-capacity lithium metal batteries.NATURE COMMUNICATIONS,13(1),6158. |
| MLA | Pei, Yi,et al."A medium-entropy transition metal oxide cathode for high-capacity lithium metal batteries".NATURE COMMUNICATIONS 13.1(2022):6158. |
入库方式： OAI收割
来源：高能物理研究所
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