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2013 | "Highly porous dendritic Ni–Sn anodes for lithium-ion batteries", Jour…

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작성자 관리자 /   작성일2015-08-25 /   조회690회

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Title : Highly porous dendritic Ni–Sn anodes for lithium-ion batteries
Authors: Kai Zhuo, Myung-Gi Jeong, and Chan-Hwa Chung

Journal : Journal of Power Sources
Vol/Page : 244/601-605
DOI : 10.1016/j.jpowsour.2013.01.055

Abstract :
A highly porous three-dimensional Ni-Sn alloy foam is fabricated by electro-deposition accompanied by hydrogen evolution reaction. This foam can evolve into porous and dendritic metal alloy structures. These Sn-based electrodes have been evaluated for use as anodes in lithium-ion batteries. Dendritic Ni50Sn50 alloy foam exhibits high electrochemical capacity and excellent cycle stability during charge -discharge processes. The nickel in a Ni-Sn alloy does not break off during the volume expansion/contraction sequence in battery operation cycles and supports the Sn remaining on the anodes. The voids in the tube-like porous Ni-Sn morphology enhance the mass transfer of Li+ ions and act as mechanical bumpers during the charge discharge processes.

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