Sufficient Oxygen Redox Activation against Voltage Decay in Li-Rich Layered Oxide Cathode Materials
文献类型：期刊论文
| 作者 | Zhou, Yuhuan; Cui, Hongfu; Qiu, Bao; Xia, Yuanhua; Yin, Chong; Wan, Liyang; Shi, Zhepu; Liu, Zhaoping |
| 刊名 | ACS MATERIALS LETTERS
 |
| 出版日期 | 2021 |
| 卷号 | 3期号:4页码:433-441 |
| 关键词 | ANIONIC REDOX STRUCTURAL TRANSFORMATION LITHIUM MN SITU HYSTERESIS RELEASE LI2MNO3 LIMO2 NI |
| 英文摘要 | Oxygen-redox-based Li-rich layered oxide cathode materials always suffer from severe voltage decay, because of progressively structural transformation. An initial consensus is that less utilization of oxygen redox in these cathodes would retard this process on cycling. In this work, we find sufficient oxygen redox in Li1.26Ni0.0741Co0.0741Mn0.593O2 that contributes toward the available capacity of 80.5% can deliver a specific capacity of 280 mAh g(-1) with the retentions of voltage and capacity of similar to 96.7% and 97.1% after 50 cycles, respectively. The suppressed voltage decay with sufficient oxygen redox is originated from the stabilizing effect of vast disordered structures generated by the initial electrochemical activation. Based on a unique disorder-order transition induced by temperature, the degree of the concentration of the disordered structures is well-revealed through temperature-dependent in situ X-ray diffraction and Raman spectroscopy. The abundant disordered structures via sufficient oxygen redox activation are believed to act as an accommodator to promote structural stability. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22041]  |
| 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), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. 2.Qiu, B 3.Liu, ZP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn NIMTE, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhou, Yuhuan,Cui, Hongfu,Qiu, Bao,et al. Sufficient Oxygen Redox Activation against Voltage Decay in Li-Rich Layered Oxide Cathode Materials[J]. ACS MATERIALS LETTERS,2021,3(4):433-441. |
| APA | Zhou, Yuhuan.,Cui, Hongfu.,Qiu, Bao.,Xia, Yuanhua.,Yin, Chong.,...&Liu, Zhaoping.(2021).Sufficient Oxygen Redox Activation against Voltage Decay in Li-Rich Layered Oxide Cathode Materials.ACS MATERIALS LETTERS,3(4),433-441. |
| MLA | Zhou, Yuhuan,et al."Sufficient Oxygen Redox Activation against Voltage Decay in Li-Rich Layered Oxide Cathode Materials".ACS MATERIALS LETTERS 3.4(2021):433-441. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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