Issue 27, 2016
From the journal:

RSC Advances

A kinetic model for diffusion and chemical reaction of silicon anode lithiation in lithium ion batteries

Zhoucan Xie,a   Zengsheng Ma,*a   Yan Wang,b   Yichun Zhoua  and  Chunsheng Luc  

* Corresponding authors

a National-Provincial Laboratory of Special Function Thin Film Materials, School of Materials Science and Engineering, Xiangtan University, Hunan 411105, China
E-mail: zsma@xtu.edu.cn
Fax: +86-731-58293577
Tel: +86-731-58293577

b School of Information and Electronic Engineering, Hunan University of Science and Technology, Hunan 411201, China

c Department of Mechanical Engineering, Curtin University, Perth, WA 6845, Australia

Abstract

In this paper, a kinetic model is proposed that combines lithium ion diffusion through a lithiated phase with chemical reaction at the interface between lithiated amorphous and crystalline silicon. It is found out that a dimensionless parameter, relating the concentration distribution of lithium ions to the movement velocity of phase interface, can be used to describe the lithiation process. Based on the stress distributions and lithium ion diffusion profiles calculated by an elastic and perfectly plastic model, it is shown that, as lithiation proceeds, the hoop stress that changes from initial compression to tension in the surface layer of silicon particles may lead to surface cracking.

Graphical abstract: A kinetic model for diffusion and chemical reaction of silicon anode lithiation in lithium ion batteries

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Article information

DOI
https://doi.org/10.1039/C5RA27817A
Article type
Paper
Submitted
27 Dec 2015
Accepted
11 Feb 2016
First published
12 Feb 2016

RSC Adv., 2016,6, 22383-22388

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A kinetic model for diffusion and chemical reaction of silicon anode lithiation in lithium ion batteries

Z. Xie, Z. Ma, Y. Wang, Y. Zhou and C. Lu, RSC Adv., 2016, 6, 22383 DOI: 10.1039/C5RA27817A

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