Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices

doi:10.1038/s41524-018-0079-6

	Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices
	Li, Chilin ; Chen, Keyi 1; Zhou, Xuejun ; Maier, Joachim 2
刊名	NPJ COMPUTATIONAL MATERIALS
	2018
卷号	4
ISSN号	2057-3960
DOI	10.1038/s41524-018-0079-6
英文摘要	Exploring electrochemically driven conversion reactions for the development of novel energy storage materials is an important topic as they can deliver higher energy densities than current Li-ion battery electrodes. Conversion-type fluorides promise particularly high energy densities by involving the light and small fluoride anion, and bond breaking can occur at relatively low Li-activity (i.e., high cell voltage). Cells based on such electrodes may become competitors to other envisaged alternatives such as Li-sulfur or Li-air systems with their many unsolved thermodynamic and kinetic problems. Relevant conversion reactions are typically multiphase redox reactions characterized by nucleation and growth processes along with pronounced interfacial and mass transport phenomena. Hence significant overpotentials and nonequilibrium reaction pathways are involved. In this review, we summarize recent findings in terms of phase evolution phenomena and mechanistic features of (oxy) fluorides at different redox stages during the conversion process, enabled by advanced characterization technologies and simulation methods. It can be concluded that well-designed nanostructured architectures are helpful in mitigating kinetic problems such as the usually pronounced voltage hysteresis. In this context, doping and open-framework strategies are useful. By these tools, simple materials that are unable to allow for substantial Li nonstoichiometry (e.g., by Li-insertable channels) may be turned into electroactive materials.
学科主题	Chemistry, Physical ; Materials Science, Multidisciplinary
出版者	SPRINGERNATURE
WOS记录号	WOS:000438369700001
资助机构	This work was supported by National Key R&D Program of China (2016YFB0901600), National Natural Science Foundation of China (51772313, 51372263), Key Research Program of Chinese Academy of Sciences (KGZD-EW-T06), and "Hundred Talents" Program of Chinese Academy of Sciences and "Thousand Talents" Program of Shanghai. ; This work was supported by National Key R&D Program of China (2016YFB0901600), National Natural Science Foundation of China (51772313, 51372263), Key Research Program of Chinese Academy of Sciences (KGZD-EW-T06), and "Hundred Talents" Program of Chinese Academy of Sciences and "Thousand Talents" Program of Shanghai.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24975]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai Inst Ceram, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany
推荐引用方式 GB/T 7714	Li, Chilin,Chen, Keyi,Zhou, Xuejun,et al. Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices[J]. NPJ COMPUTATIONAL MATERIALS,2018,4.
APA	Li, Chilin,Chen, Keyi,Zhou, Xuejun,&Maier, Joachim.(2018).Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices.NPJ COMPUTATIONAL MATERIALS,4.
MLA	Li, Chilin,et al."Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices".NPJ COMPUTATIONAL MATERIALS 4(2018).