阳极
材料科学
石墨
联轴节(管道)
压力(语言学)
硅
电化学
阴极
芯(光纤)
碳纤维
壳体(结构)
离子
纳米颗粒
图层(电子)
电极
复合材料
化学工程
扩散
纳米技术
光电子学
热力学
物理化学
复合数
工程类
哲学
物理
化学
量子力学
语言学
作者
Siyuan Yan,Chuanwei Li,Zhifeng Qi,Lipan Xin,Linan Li,Shibin Wang,Zhiyong Wang
出处
期刊:Chinese Physics B
[IOP Publishing]
日期:2021-07-07
卷期号:30 (9): 098201-098201
被引量:1
标识
DOI:10.1088/1674-1056/ac11de
摘要
Silicon-based carbon composites are believed as promising anodes in the near future due to their outstanding specific capacity and relatively lower volume effect compared to pure silicon anodes. Herein, a multilayer spherical core–shell (M-SCS) electrode with a graphite framework prepared with Si@O-MCMB/C nanoparticles is developed, which aims to realize chemically/mechanically stability during the lithiation/delithiation process with high specific capacity. An electrochemical-/mechanical-coupling model for the M-SCS structure is established with various chemical/mechanical boundary conditions. The simulation of finite difference method (FDM) has been conducted based on the proposed coupling model, by which the diffusion-induced stress along both the radial and the circumferential directions is determined. Moreover, factors that influence the diffusion-induced stress of the M-SCS structure have been discussed and analyzed in detail.
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