气候变化领域集成服务门户(CCPortal): Waterproof lithium metal anode enabled by cross-linking encapsulation

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DOI	10.1016/j.scib.2020.02.022
	Waterproof lithium metal anode enabled by cross-linking encapsulation
	Xiao Y.; Xu R.; Yan C.; Liang Y.; Ding J.-F.; Huang J.-Q.
发表日期	2020
ISSN	20959273
起始页码	909
结束页码	916
卷号	65 期号:11
英文摘要	Lithium (Li) metal is considered as the ultimate anode choice for developing next-generation high-energy batteries. However, the poor tolerance against moist air and the unstable solid electrolyte interphases (SEI) induced by the intrinsic high reactivity of lithium bring series of obstacles such as the rigorous operating condition, the poor electrochemical performance, and safety anxiety of the cell, which to a large extent hinder the commercial utilization of Li metal anode. Here, an effective encapsulation strategy was reported via a facile drop-casting and a following heat-assisted cross-linking process. Benefiting from the inherent hydrophobicity and the compact micro-structure of the cross-linked poly(vinylidene-co-hexafluoropropylene) (PVDF–HFP), the as-encapsulated Li metal exhibited prominent stability toward moisture, as well corroborated by the evaluations both under the humid air at 25 °C with 30% relative humidity (RH) and pure water. Moreover, the encapsulated Li metal anode exhibits a decent electrochemical performance without substantially increasing the cell polarization due to the uniform and unblocked ion channels, which originally comes from the superior affinity of the PVDF–HFP polymer toward non-aqueous electrolyte. This work demonstrates a novel and valid encapsulation strategy for humidity-sensitive alkali metal electrodes, aiming to pave the way for the large-scale and low-cost deployment of the alkali metal-based high-energy-density batteries. © 2020 Science China Press
关键词	Air-stable Cross-linking Interfacial protection Lithium metal anode Polymer encapsulation Water-stable
英文关键词	Anodes; Crosslinking; Lithium batteries; Solid electrolytes; Air stable; Electrochemical performance; High-energy density batteries; Interfacial protection; Lithium metal anode; Poly(vinylidene-co-hexafluoropropylene); Polymer encapsulation; Solid electrolyte interphase; Lithium
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207242
作者单位	School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China; Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, 100081, China; College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
推荐引用方式 GB/T 7714	Xiao Y.,Xu R.,Yan C.,et al. Waterproof lithium metal anode enabled by cross-linking encapsulation[J],2020,65(11).
APA	Xiao Y.,Xu R.,Yan C.,Liang Y.,Ding J.-F.,&Huang J.-Q..(2020).Waterproof lithium metal anode enabled by cross-linking encapsulation.Science Bulletin,65(11).
MLA	Xiao Y.,et al."Waterproof lithium metal anode enabled by cross-linking encapsulation".Science Bulletin 65.11(2020).