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| In Situ Electrochemical XAFS Studies on an Iron Fluoride High-Capacity Cathode Material for Rechargeable Lithium Batteries | |
| Zhang, Wei; Duchesne, Paul N.; Gong, Zheng-Liang; Wu, Shun-Qing; Ma, Lin; Jiang, Zheng; Zhang, Shuo; Zhang, Peng; Mi, Jin-Xiao; Yang, Yong | |
| 2013 | |
| Source Publication | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| ISSN | 1932-7447 |
| Volume | 117Issue:22Pages:CONCATENATE(Sheet1!I163,-Sheet1!J163) |
| Abstract | The reactions and structural evolution of FeF3 during cell cycling are investigated in an in situ cell by using Fe K-edge X-ray absorption fine-structure (XAFS) spectroscopy. The results of X-ray absorption near-edge structure spectroscopic analysis demonstrate that there are three stages in the reaction of FeF3 with Li: (1) a two-phase intercalation reaction in the range of x = 0 to 0.46 Li, (2) a single-phase intercalation reaction in the range of x = 0.46 to 0.92 Li, and (3) a conversion reaction in the range of x = 0.92 to 2.78 Li. The coordination numbers (CNs) and bond lengths of the Fe-F bonds or Fe-Fe bonds for the lithiated FeF3 are obtained by performing XAFS fitting. The splitting trends of the Fe-F bond lengths and the Fe-F CNs in the range of x = 0 to 0.92 Li support the proposal that R-3c-structured FeF3 is transformed into R3c-structured Li0.92FeF3 after the intercalation of 0.92 equiv. of Li, and that the intermediate Li0.46FeF3 may be R3-structured. The small Fe-Fe CN of Li2.78FeF3 indicates that the average diameter of the Fe crystallites formed during discharge is <1 nm. |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000320214800006 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/13777 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Recommended Citation GB/T 7714 | Zhang, Wei,Duchesne, Paul N.,Gong, Zheng-Liang,et al. In Situ Electrochemical XAFS Studies on an Iron Fluoride High-Capacity Cathode Material for Rechargeable Lithium Batteries[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(22):CONCATENATE(Sheet1!I163,-Sheet1!J163). |
| APA | Zhang, Wei.,Duchesne, Paul N..,Gong, Zheng-Liang.,Wu, Shun-Qing.,Ma, Lin.,...&Yang, Yong.(2013).In Situ Electrochemical XAFS Studies on an Iron Fluoride High-Capacity Cathode Material for Rechargeable Lithium Batteries.JOURNAL OF PHYSICAL CHEMISTRY C,117(22),CONCATENATE(Sheet1!I163,-Sheet1!J163). |
| MLA | Zhang, Wei,et al."In Situ Electrochemical XAFS Studies on an Iron Fluoride High-Capacity Cathode Material for Rechargeable Lithium Batteries".JOURNAL OF PHYSICAL CHEMISTRY C 117.22(2013):CONCATENATE(Sheet1!I163,-Sheet1!J163). |
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| File Name/Size | DocType | Version | Access | License | ||
| In Situ Electrochemi（2683KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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