Confinement effect and air tolerance of Li plating by lithiophilic poly(vinyl alcohol) coating for dendrite-free Li metal batteries

doi:10.1039/c9ta09146g

SIC OpenIR

	Confinement effect and air tolerance of Li plating by lithiophilic poly(vinyl alcohol) coating for dendrite-free Li metal batteries
	Wu, Han; Yao, Zhenguo; Wu, Qingping; Fan, Shengsheng; Yin, Congling; Li, Chilin
	2019-10-21
Source Publication	JOURNAL OF MATERIALS CHEMISTRY A
ISSN	2050-7488
Volume	7 Issue:39 Pages:22257
Subtype	Article
Abstract	Lithium metal is an ideal anode material with high capacity and low redox potential, enabling the upgrade of energy density of batteries. However, the prevalence of dendritic and dead Li and resultant poor cycling performance have hindered its practical application. Herein, we introduced a highly tight poly(vinyl alcohol) (PVA) coating on Cu foil or a Li metal surface to achieve a superior confinement effect and long-term air tolerance of Li plating. This conformal and lithiophilic coating enables the compaction of Li deposits without evident grain boundaries and voids even at a high current density of 5 mA cm(-2). The PVA-protected Li anode can be exposed to air for at least one hour but still with evident metal glossiness, greatly improving its safety and operability. A high coulombic efficiency of similar to 98% and long-term cycling of 250 cycles are preserved for modified Li/Cu and Li/Li cells, respectively, even at high 5-10 mA cm(-2). The facile strategy of conformal coating with high elasticity, tightness and robustness is a potential solution to high-stability Li anodes and high-rate Li-S batteries.
DOI	10.1039/c9ta09146g
Language	英语
WOS Research Area	Chemistry ; Energy & Fuels ; Materials Science
Publisher	ROYAL SOC CHEMISTRY
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26766
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Wu, Han,Yao, Zhenguo,Wu, Qingping,et al. Confinement effect and air tolerance of Li plating by lithiophilic poly(vinyl alcohol) coating for dendrite-free Li metal batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(39):22257.
APA	Wu, Han,Yao, Zhenguo,Wu, Qingping,Fan, Shengsheng,Yin, Congling,&Li, Chilin.(2019).Confinement effect and air tolerance of Li plating by lithiophilic poly(vinyl alcohol) coating for dendrite-free Li metal batteries.JOURNAL OF MATERIALS CHEMISTRY A,7(39),22257.
MLA	Wu, Han,et al."Confinement effect and air tolerance of Li plating by lithiophilic poly(vinyl alcohol) coating for dendrite-free Li metal batteries".JOURNAL OF MATERIALS CHEMISTRY A 7.39(2019):22257.

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