Boosting energy efficiency of Li-rich layered oxide cathodes by tuning oxygen redox kinetics and reversibility
文献类型：期刊论文
| 作者 | Yin, Chong; Wan, Liyang; Qiu, Bao; Wang, Feng; Jiang, Wei; Cui, Hongfu; Bai, Jianming; Ehrlich, Steven; Wei, Zhining; Liu, Zhaoping |
| 刊名 | ENERGY STORAGE MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 35页码:388-399 |
| 英文摘要 | In developing electrode materials for next-generation Li-ion batteries, significant efforts have been given to the energy, power density and cycling stability, with much less (if any) attention paid to the energy efficiency - arguably, the most important practical measure for large-scale applications. This is particularly true for the oxygen-redox active electrodes, such as Li1.2Ni0.13Co0.13Mn0.54O2, the notorious energy-inefficient cathode that has an extremely high capacity but comes with large voltage hysteresis and voltage decay. Herein, we report the rational design of an energy-efficient Li-rich layered cathode along with high energy, power density and cycling stability enabled by tuning oxygen redox activity. Specifically, the target material Li1.12Ni0.22Co0.13Mn0.52O2 exhibits an ultrahigh energy efficiency at 1 C (90.6%), high capacity (> 200 mAh g(-1)) with 98.9% retention and less than 150 mV decay at the extended 200 cycles. Through direct comparison between the material and Li1.2Ni0.13Co0.13Mn0.54O2, we show that the compositional change, although slightly, greatly improves the oxygen redox kinetics and reversibility, thereby boosts energy efficiency. The findings offer a strategy to narrow the gap between scientific interest and practical application of oxygen-redox chemistry. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22141]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Liu, ZP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Graphene Technol & Applicat Zhejiang Prov, Ningbo 315201, Zhejiang, Peoples R China. 2.Qiu, B 3.Liu, ZP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Adv Li Ion Battery Engn Lab Zhejiang Prov, Ningbo 315201, Zhejiang, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yin, Chong,Wan, Liyang,Qiu, Bao,et al. Boosting energy efficiency of Li-rich layered oxide cathodes by tuning oxygen redox kinetics and reversibility[J]. ENERGY STORAGE MATERIALS,2021,35:388-399. |
| APA | Yin, Chong.,Wan, Liyang.,Qiu, Bao.,Wang, Feng.,Jiang, Wei.,...&Liu, Zhaoping.(2021).Boosting energy efficiency of Li-rich layered oxide cathodes by tuning oxygen redox kinetics and reversibility.ENERGY STORAGE MATERIALS,35,388-399. |
| MLA | Yin, Chong,et al."Boosting energy efficiency of Li-rich layered oxide cathodes by tuning oxygen redox kinetics and reversibility".ENERGY STORAGE MATERIALS 35(2021):388-399. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。