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DOI	10.1039/c7ee01798g
	A room-temperature liquid metal-based self-healing anode for lithium-ion batteries with an ultra-long cycle life
	Wu Y.; Huang L.; Huang X.; Guo X.; Liu D.; Zheng D.; Zhang X.; Ren R.; Qu D.; Chen J.
发表日期	2017
ISSN	17545692
起始页码	1854
结束页码	1861
卷号	10 期号:8
英文摘要	Benefiting from fluidity and surface tension, materials in a liquid form are one of the best candidates for self-healing applications. This feature is highly desirable for improving the life cycle of lithium-ion batteries (LIBs) because the volume expansion/contraction during the cycles of high-capacity anodes such as Si and Sn can result in mechanical fracture and lead to inferior cycle performance. Here, we report a novel room-temperature liquid metal (LM) as the anode to improve the cycle life of LIBs. The LM anode comprises an alloy of Sn and Ga, a liquid at room temperature with inherent self-healing properties, as confirmed by the in situ and ex situ analyses. Because both Ga and Sn have high theoretical capacities (769 and 990 mA h g-1, respectively), the resulting LM anode delivers a high capacity of 775, 690, and 613 mA h g-1 at the rate of 200, 500, and 1000 mA g-1, respectively. There was no obvious decay in more than 4000 cycles with a capacity of ∼400 mA h g-1 at 4000 mA g-1, realizing the best cycle performance among all metal anodes. © The Royal Society of Chemistry 2017.
英文关键词	Anodes; Charging (batteries); Electric batteries; Electrodes; Fracture; Life cycle; Liquid metals; Liquids; Lithium compounds; Secondary batteries; Self-healing materials; Tin; Cycle performance; Ex situ analysis; High capacity; High capacity anode; Self-healing; Self-healing properties; Theoretical capacity; Volume expansion; Lithium-ion batteries
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190433
作者单位	Department of Mechanical Engineering, University of Wisconsin-Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, United States
推荐引用方式 GB/T 7714	Wu Y.,Huang L.,Huang X.,et al. A room-temperature liquid metal-based self-healing anode for lithium-ion batteries with an ultra-long cycle life[J],2017,10(8).
APA	Wu Y..,Huang L..,Huang X..,Guo X..,Liu D..,...&Chen J..(2017).A room-temperature liquid metal-based self-healing anode for lithium-ion batteries with an ultra-long cycle life.Energy & Environmental Science,10(8).
MLA	Wu Y.,et al."A room-temperature liquid metal-based self-healing anode for lithium-ion batteries with an ultra-long cycle life".Energy & Environmental Science 10.8(2017).