In situ Visualization of State-of-Charge Heterogeneity within a LiCoO2 Particle that Evolves upon Cycling at Different Rates
文献类型：期刊论文
| 作者 | Liu, YJ; Yu, XQ; Pianetta, P; Sun, ZH ; Borzenets, V; Wang, XL; Zhan, K; Hu, EY; Zhang K(张凯); Li, H
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| 刊名 | ACS ENERGY LETTERS
 |
| 出版日期 | 2017 |
| 卷号 | 2期号:5页码:1240-1245 |
| ISSN号 | 2380-8195 |
| DOI | 10.1021/acsenergylett.7b00263 |
| 文献子类 | Article |
| 英文摘要 | For designing new battery systems with higher energy density and longer cycle life, it is important to understand the degradation mechanism of the electrode material, especially at the individual particle level. Using in situ transmission X-ray microscopy (TXM) coupled to a pouch cell setup, the inhomogeneous Li distribution as well as the formation, population, and evolution of inactive domains in a single LiCoO2 particle were visualized as it was cycled for many times. It is found that the percentage of the particle that fully recovered to the pristine state is strongly related to the cycling rate. Interestingly, we also observed the evolution of the inactive region within the particle during long-term cycling. The relationship between morphological degradation and chemical inhomogeneity, including the formation of unanticipated Co metal phase, is also observed. Our work highlights the capability of in situ TXM for studying the degradation mechanism of materials in LIBs. |
| WOS关键词 | LITHIUM-ION BATTERIES ; X-RAY MICROSCOPY ; LAYERED COMPOSITE CATHODE ; POSITIVE ELECTRODE ; PHASE-TRANSFORMATIONS ; NEUTRON-DIFFRACTION ; COBALT DISSOLUTION ; VOLTAGE FADE ; LI ; NANOSCALE |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000401500200043 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285139]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_计算中心 |
| 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 | Liu, YJ,Yu, XQ,Pianetta, P,et al. In situ Visualization of State-of-Charge Heterogeneity within a LiCoO2 Particle that Evolves upon Cycling at Different Rates[J]. ACS ENERGY LETTERS,2017,2(5):1240-1245. |
| APA | Liu, YJ.,Yu, XQ.,Pianetta, P.,Sun, ZH.,Borzenets, V.,...&Xu, YH.(2017).In situ Visualization of State-of-Charge Heterogeneity within a LiCoO2 Particle that Evolves upon Cycling at Different Rates.ACS ENERGY LETTERS,2(5),1240-1245. |
| MLA | Liu, YJ,et al."In situ Visualization of State-of-Charge Heterogeneity within a LiCoO2 Particle that Evolves upon Cycling at Different Rates".ACS ENERGY LETTERS 2.5(2017):1240-1245. |
入库方式： OAI收割
来源：高能物理研究所
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