Dehydrating bronze iron fluoride as a high capacity conversion cathode for lithium batteries | |
Hu, Jiulin1,2; Zhang, Ye1,2; Cao, Dunping1; Li, Chilin1 | |
刊名 | JOURNAL OF MATERIALS CHEMISTRY A |
2016 | |
卷号 | 4期号:41页码:16166-16174 |
英文摘要 | Lithium metal batteries combined with conversion cathodes are receiving more attention in view of their higher energy density. Open-framework fluoride is expected to have better conversion efficiency and reversibility than the dense polymorph, potentially benefitting from the optimized spatial distribution of its conversion products. However, the ease of hydration of the open channels would degrade the electrolyte when the framework evolves and hydration water is released during the conversion reaction. Herein, we report an ionothermal fluorination method to prepare dehydrated iron fluoride with a hexagonal tungsten bronze (HTB) structure using a microphase-separation-type ionic liquid for the first time. This bronze fluoride is characterized by high crystallinity and no substantial surface coating, which is crucial for the successful removal of tunnel H2O molecules. As a conversion cathode, it achieves a high reversible capacity of 200-450 mA h g(-1) for at least 100 cycles, about 100 mA h g(-1) larger than that for the hydrated HTB phase. |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
类目[WOS] | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
研究领域[WOS] | Chemistry ; Energy & Fuels ; Materials Science |
关键词[WOS] | ION BATTERIES ; HIGH-ENERGY ; X-RAY ; FEF3 ; LI ; PERFORMANCE ; NANOCOMPOSITES ; FABRICATION ; MECHANISM ; COMPOUND |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000387168300044 |
内容类型 | 期刊论文 |
源URL | [http://ir.sic.ac.cn/handle/331005/21984] |
专题 | 上海硅酸盐研究所_高性能陶瓷和超微结构国家重点实验室_期刊论文 |
作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Ding Xi Rd, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
推荐引用方式 GB/T 7714 | Hu, Jiulin,Zhang, Ye,Cao, Dunping,et al. Dehydrating bronze iron fluoride as a high capacity conversion cathode for lithium batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(41):16166-16174. |
APA | Hu, Jiulin,Zhang, Ye,Cao, Dunping,&Li, Chilin.(2016).Dehydrating bronze iron fluoride as a high capacity conversion cathode for lithium batteries.JOURNAL OF MATERIALS CHEMISTRY A,4(41),16166-16174. |
MLA | Hu, Jiulin,et al."Dehydrating bronze iron fluoride as a high capacity conversion cathode for lithium batteries".JOURNAL OF MATERIALS CHEMISTRY A 4.41(2016):16166-16174. |
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