Affiliation of Author(s):材料科学与技术学院
Journal:ACS APPLIED MATERIALS & INTERFACES
Key Words:silicon carbon coated hollow structure Li-ion batteries anode
Abstract:Adjusting the particle size and nanostructure or applying carbon materials as the coating layers is a promising method to hold the volume expansion of Si for its practical application in lithium-ion batteries (LIBs). Herein, the mild carbon coating combined with a molten salt reduction is precisely designed to Synthesize raspberry-like hollow silicon spheres coated with carbon shells (HSi@C) as the anode materials for LIBs. The HSi@C exhibits a remarkable electrochemical performance; a high reversible specific capacity of 886.2 mAh gr(-1) at a current density of 0.5 A g(-1) after 200 cycles is achieved. Moreover, even after 500 cycles at a current density of 2.0 A g(-1), a stable capacity of 516.7 mAh g(-1) still can be obtained.
ISSN No.:1944-8244
Translation or Not:no
Date of Publication:2017-06-07
Co-author:Tong, Zhenkun,Nie, Ping,Liu, Gao,Zhang Xiaogang
Correspondence Author:Zhang Xiaogang,fangshan
Date of Publication:2017-06-07