TY - JOUR
T1 - Electrochemical performance and morphological evolution of hollow Sn microspheres
AU - Guo, Meiqing
AU - Zhang, Xiaogang
AU - Meng, Weijia
AU - Liu, Xiao
AU - Wang, Genwei
AU - Bai, Zhongchao
AU - Wang, Zhihua
AU - Yang, Fuqian
N1 - Publisher Copyright:
© 2018
PY - 2018/11/1
Y1 - 2018/11/1
N2 - Using shell-like structures in lithium-ion battery (LIB) can limit the structural degradation/damage induced by the volumetric change during electrochemical cycling. In this work, we synthesize hollow Sn microspheres (Sn-HMSs) via a galvanic replacement reaction, and study the electrochemical performance of the lithium-ion cells with Sn-HMSs as the working electrode. The lithium-ion cells have a charge capacity of 205.9 mA h g−1 after 100 cycles at a current density of 100 mA g−1. In comparison with the charge capacities of 148 mA h g−1 of solid Sn nanospheres and 516.1 mA h g−1 of hollow Sn nanospheres, the results reported in this work reveal the importance of shell-like structures in the retention of the energy storage for LIBs and the size effect on the energy storage. The smaller the hollow Sn spheres, the better is the cycle performance. There are two modes of structural degradation/damage contributing to the capacity loss during electrochemical cycling; one is the disintegration of the Sn-HMSs, and the other is the fracturing of the electrode layer.
AB - Using shell-like structures in lithium-ion battery (LIB) can limit the structural degradation/damage induced by the volumetric change during electrochemical cycling. In this work, we synthesize hollow Sn microspheres (Sn-HMSs) via a galvanic replacement reaction, and study the electrochemical performance of the lithium-ion cells with Sn-HMSs as the working electrode. The lithium-ion cells have a charge capacity of 205.9 mA h g−1 after 100 cycles at a current density of 100 mA g−1. In comparison with the charge capacities of 148 mA h g−1 of solid Sn nanospheres and 516.1 mA h g−1 of hollow Sn nanospheres, the results reported in this work reveal the importance of shell-like structures in the retention of the energy storage for LIBs and the size effect on the energy storage. The smaller the hollow Sn spheres, the better is the cycle performance. There are two modes of structural degradation/damage contributing to the capacity loss during electrochemical cycling; one is the disintegration of the Sn-HMSs, and the other is the fracturing of the electrode layer.
KW - Anode
KW - Hollow microspheres
KW - Lithium-ion batteries
KW - Sn
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U2 - 10.1016/j.ssi.2018.08.004
DO - 10.1016/j.ssi.2018.08.004
M3 - Article
AN - SCOPUS:85051997867
SN - 0167-2738
VL - 325
SP - 120
EP - 127
JO - Solid State Ionics
JF - Solid State Ionics
ER -