The long life-span of a Li-metal anode enabled by a protective layer based on the pyrolyzed N-doped binder network

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	The long life-span of a Li-metal anode enabled by a protective layer based on the pyrolyzed N-doped binder network
	Wu, Gang; Li, Hong; Cui, Ping; Wang, Deyu; Wen, Zhaoyin; Zhang, Zhenggang; Peng, Zhe; Zheng, Jieyun; Wang, Susu; Liu, Zixuan
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2017
卷号	5 期号:19 页码:9339-9349
ISSN号	2050-7488
英文摘要	Attempts to utilize lithium metal in secondary batteries are seriously restricted by its uncontrollable side reactions with the electrolyte solvent. Here we utilize a protective porous structure based on the pyrolyzed PAN binder to stabilize the electrolyte/lithium interface to prolong its working life. With the increase of pyrolysis temperatures, the treated PAN fibers possess two mutational points in mechanical properties located at similar to 300 & similar to 700 degrees C, and exhibit carbon-like characteristics at similar to 400 degrees C and higher. Compared to the control electrode, the cyclic life-span of the treated electrodes can increase 1.8 times at the first mutational point, and surprisingly rise to 12 & 7 times for the samples pyrolyzed at 400 & 500 degrees C, then fall back to 1.6 times at the second mutational point. These results reveal that the stable operation of lithium plating/stripping could be provided by the internal interwoven SEI layer grown on the carbon-like binder network with appropriate rigidity. Among the investigated systems, the protective structure treated at 400 degrees C can stably operate for 350 cycles with an average coulombic efficiency as high as similar to 98%, which is the best efficiency recorded for carbonate-based electrolytes to date.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13825]
专题	2017专题
推荐引用方式 GB/T 7714	Wu, Gang,Li, Hong,Cui, Ping,et al. The long life-span of a Li-metal anode enabled by a protective layer based on the pyrolyzed N-doped binder network[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(19):9339-9349.
APA	Wu, Gang.,Li, Hong.,Cui, Ping.,Wang, Deyu.,Wen, Zhaoyin.,...&Chen, Yousi.(2017).The long life-span of a Li-metal anode enabled by a protective layer based on the pyrolyzed N-doped binder network.JOURNAL OF MATERIALS CHEMISTRY A,5(19),9339-9349.
MLA	Wu, Gang,et al."The long life-span of a Li-metal anode enabled by a protective layer based on the pyrolyzed N-doped binder network".JOURNAL OF MATERIALS CHEMISTRY A 5.19(2017):9339-9349.