LiF Splitting Catalyzed by Dual Metal Nanodomains for an Efficient Fluoride Conversion Cathode
文献类型：期刊论文
| 作者 | Zhao, Yu; Wei, Kaiyuan; Wu, Hailong; Ma, Shiping; Li, Jian; Cui, Yixiu; Dong, Zhaohui; Cui, Yanhua; Li, Chilin |
| 刊名 | ACS NANO
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 13期号:2页码:2490 |
| 关键词 | LiF splitting fluoride cathode conversion reaction Li-ion batteries thin film |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.8b09453 |
| 文献子类 | Article |
| 英文摘要 | The critical challenges for fluoride conversion cathodes lie in the absence of built-in Li source, poor capacity retention, and rate performance. For lithiated fluorides, the reason to limit their competitiveness is rooted in the facile coarsing of insulating LiF (as built-in Li source) and its insufficient splitting kinetics during charging. Previous efforts on blending LiF nanodomains with reductive metal, metal oxide, or fluoride by ball-milling method still face the problems of large over potential and low current density. Herein we propose a strategy of dual-metal (Fe-Cu) driven LiF splitting to activate the conversion reaction of fluoride cathode. This lithiated heterostructure (LiF/Fe/Cu) with compact nano-domain contact enables a substantial charge process with considerable capacity release (300 mAh g(-1)) and low charge overpotential. Its reversible capacity is as high as 375-400 mAh g(-1) with high energy efficiency (76%), substantial pseudocapacitance contribution (>50%), and satisfactory capacity retention (at least 200 cycles). The addition of Cu nanodomains greatly catalyzes the kinetics of Fe-Cu-F formation and decomposition compared with the redox process of Fe-F, which lead to the energy and power densities exceeding 1000 Wh kg(-1) and 1500 W kg(-1), respectively. These results indicate that LiF-driven cathode is promising as long as its intrinsic conductive network is elegantly designed. |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27354]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Zhao, Yu,Wei, Kaiyuan,Wu, Hailong,et al. LiF Splitting Catalyzed by Dual Metal Nanodomains for an Efficient Fluoride Conversion Cathode[J]. ACS NANO,2019,13(2):2490. |
| APA | Zhao, Yu.,Wei, Kaiyuan.,Wu, Hailong.,Ma, Shiping.,Li, Jian.,...&Li, Chilin.(2019).LiF Splitting Catalyzed by Dual Metal Nanodomains for an Efficient Fluoride Conversion Cathode.ACS NANO,13(2),2490. |
| MLA | Zhao, Yu,et al."LiF Splitting Catalyzed by Dual Metal Nanodomains for an Efficient Fluoride Conversion Cathode".ACS NANO 13.2(2019):2490. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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