Finding a needle in the haystack: identification of functionally important minority phases in an operating battery
文献类型：期刊论文
| 作者 | Zhang, Kai1,2; Ren, Fang2; Wang, Xuelong3,4; Hu, Enyuan3; Xu, Yahong2; Yang, Xiao-Qing3; Li, Hong4; Chen, Liquan4; Pianetta, Piero2; Mehta, Apurva2 |
| 刊名 | Nano letters
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 17期号:12页码:7782-7788 |
| 关键词 | Li-ion battery Minority phase X-ray spectro-microscopy Data mining Licoo2 |
| ISSN号 | 1530-6984 |
| DOI | 10.1021/acs.nanolett.7b03985 |
| 通讯作者 | Mehta, apurva(mehta@slac.stanford.edu) ; Yu, xiqian(xyu@iphy.ac.cn) ; Liu, yijin(liuyijin@slac.stanford.edu) |
| 英文摘要 | The in-depth understanding of the minority phases' roles in functional materials, e.g., batteries, is critical for optimizing the system performance and the operational efficiency. although the visualization of battery electrode under operating conditions has been demonstrated, the development of advanced data-mining approaches is still needed in order to identify minority phases and to understand their functionalities. the present study uses nanoscale x-ray spectromicroscopy to study a functional licoo2/li battery pouch cell. the data-mining approaches developed herein were used to search through over 10 million x-ray absorption spectra that cover more than 100 active cathode particles. two particles with unanticipated chemical fingerprints were identified and further analyzed, providing direct evidence and valuable insight into the undesired side reactions involving the cation dissolution and precipitation as well as the local overlithiation-caused subparticle domain deactivation. the data-mining approach described in this work is widely applicable to many other structurally complex and chemically heterogeneous systems, in which the secondary/minority phases could critically affect the overall performance of the system, well beyond battery research. |
| WOS关键词 | LITHIUM-ION BATTERIES ; X-RAY MICROSCOPY ; OF-CHARGE HETEROGENEITY ; IN-SITU ; PARTICLES ; VISUALIZATION ; NANOSCALE ; OPERANDO ; LICOO2 ; OXIDE |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| 语种 | 英语 |
| WOS记录号 | WOS:000418393300084 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177855 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Mehta, Apurva; Yu, Xiqian; Liu, Yijin |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 2.SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA 3.Brookhaven Natl Lab, Chem Div, Upton, NY 11973 USA 4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Kai,Ren, Fang,Wang, Xuelong,et al. Finding a needle in the haystack: identification of functionally important minority phases in an operating battery[J]. Nano letters,2017,17(12):7782-7788. |
| APA | Zhang, Kai.,Ren, Fang.,Wang, Xuelong.,Hu, Enyuan.,Xu, Yahong.,...&Liu, Yijin.(2017).Finding a needle in the haystack: identification of functionally important minority phases in an operating battery.Nano letters,17(12),7782-7788. |
| MLA | Zhang, Kai,et al."Finding a needle in the haystack: identification of functionally important minority phases in an operating battery".Nano letters 17.12(2017):7782-7788. |
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来源：高能物理研究所
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