Effect of anode structural designs on diffusion stress distribution in sodium-ion batteries

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-02-27 DOI:10.1016/j.mseb.2025.118143

Longlong Chen, Kaiqi Hu, Bingbing Chen

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引用次数: 0

Abstract

A temperature–pressure–electrochemical coupling model is developed using finite element simulations to analyze the distribution of diffusion stress in anode particles with different structures and sizes under low-temperature conditions, with NaVPO₄F–HC sodium-ion batteries used as a case study. Our calculations show that optimizing the structural design and size of anode particles can considerably lower von Mises stress at low temperatures. Of the three structures analyzed in this study, the yolk structure proved to be the most effective. This structure provides sufficient space for electrode particle expansion, thereby effectively reducing diffusion stress. Additionally, analysis of von Mises stress distribution in the yolk–shell structure across various low temperatures, revealed that the properties of the yolk structure remained largely stable at low temperatures. This research provides an effective method for determining optimal anode particle structures and sizes in sodium-ion batteries at low temperatures, supporting the development of sodium batteries with improved mechanical properties.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.