Propagation topography of redox phase transformations in heterogeneous layered oxide cathode materials
文献类型：期刊论文
| 作者 | Mu, LQ; Yuan, QX ; Tian, CX; Zhang, K; Wei, CX; Liu, J; Pianetta, P; Doeff, MM; Liu, YJ; Lin, F
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| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2018 |
| 卷号 | 9页码:2810 |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/s41467-018-05172-x |
| 文献子类 | Article |
| 英文摘要 | Redox phase transformations are relevant to a number of metrics pertaining to the electrochemical performance of batteries. These phase transformations deviate from and are more complicated than the conventional theory of phase nucleation and propagation, owing to simultaneous changes of cationic and anionic valence states as well as the polycrystalline nature of battery materials. Herein, we propose an integrative approach of mapping valence states and constructing chemical topographies to investigate the redox phase transformation in polycrystalline layered oxide cathode materials under thermal abuse conditions. We discover that, in addition to the three-dimensional heterogeneous phase transformation, there is a mesoscale evolution of local valence curvatures in valence state topographies. The relative probability of negative and positive local valence curvatures alternates during the layered-to-spinel/rocksalt phase transformation. The implementation of our method can potentially provide a universal approach to study phase transformation behaviors in battery materials and beyond. |
| WOS关键词 | OF-CHARGE HETEROGENEITY ; LITHIUM-ION BATTERIES ; X-RAY MICROSCOPY ; STRUCTURAL-CHANGES ; THERMAL-STABILITY ; ELECTRON-MICROSCOPY ; STATE ; VISUALIZATION ; CONVERSION ; PARTICLES |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000439030400010 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286127]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 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 | Mu, LQ,Yuan, QX,Tian, CX,et al. Propagation topography of redox phase transformations in heterogeneous layered oxide cathode materials[J]. NATURE COMMUNICATIONS,2018,9:2810. |
| APA | Mu, LQ.,Yuan, QX.,Tian, CX.,Zhang, K.,Wei, CX.,...&袁清习.(2018).Propagation topography of redox phase transformations in heterogeneous layered oxide cathode materials.NATURE COMMUNICATIONS,9,2810. |
| MLA | Mu, LQ,et al."Propagation topography of redox phase transformations in heterogeneous layered oxide cathode materials".NATURE COMMUNICATIONS 9(2018):2810. |
入库方式： OAI收割
来源：高能物理研究所
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