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Ex situ identification of the Cu+ long-range diffusion path of a Cu-based anode for lithium ion batteries

By KF Chen and Dongfeng Xue

Abstract

An ex situ observation was made by XRD patterns, SEM and TEM images, as well as cyclic voltammogram curves of CuO/Cu integrated anodes for lithium ion batteries. For the first time, the existence of a Cu+ ion long-range transfer path was identified at the potential widow of 1.30-1.60 V during both charging and discharging processes. Both SEM and TEM images show that these nanowires networks hanging CuO nanoparticles provide a Cu+ diffusion path within our designed CuO/Cu integrated anode. This work provides new insights into the conversion reaction of inorganic anode materials, and can favor the development of high-performance conversion anodes for lithium-ion batteries

Topics: TRANSMISSION ELECTRON-MICROSCOPY, CONVERSION REACTION-MECHANISMS, ELECTROCHEMICAL LITHIATION, CRYSTAL-GROWTH, CUPROUS-OXIDE, CRYSTALLIZATION, NANOWIRES, SILICON, NANOPARTICLES, SPECTROSCOPY
Year: 2014
DOI identifier: 10.1039/c4cp00811a
OAI identifier: oai:ir.ciac.jl.cn:322003/56260
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