应用修正Stoney公式原位测量硅薄膜电极中的锂化应力

doi:10.3969/j.issn.0253-2778.2020.12.009

中国科学技术大学学报 ›› 2020, Vol. 50 ›› Issue (12): 1516-1524.DOI: 10.3969/j.issn.0253-2778.2020.12.009

• 科研论文 • 上一篇

应用修正Stoney公式原位测量硅薄膜电极中的锂化应力

中国科学院材料力学行为和设计重点实验室,中国科学技术大学近代力学系,安徽合肥230027

出版日期:2020-12-30 发布日期:2021-03-04

Modified Stoney formula for in-situ lithiation stress measurement in thin-film Si electrode

CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China

Online:2020-12-30 Published:2021-03-04
Contact: Ni Yong is a Professor of Mechanics at University of Science and Technology of China ( USTC). He received his B. S. degree in Theoretical and Applied Mechanics in 2000 and Ph. D. degree in Solid Mechanics in 2004, both from USTC. From 2005 to 2009, he worked in Hong Kong University, National Institute of Standard and Technology, and Rutgers University as a visiting scholar and Research Associate, respectively. He joined the USTC faculty as a Professor of Mechanics in 2009. His research mainly focuses on mechanics of microstructured materials.
About author:Liu Peilin is a master student under the supervision of Prof. Ni Yong at University of Science and Technology of China (USTC). She received her bachelor’ s degree in Engineering Mechanics from North China University of Water Conservancy and Hydropower in 2014. Her research mainly focuses on the in- situ measurement of lithiation stress in thin-film Si electrode.
Supported by:
The work is supported by the National Natural Science Foundation of China (11672285), the Strategic Priority Research Program of the Chinese Academy of Sciences ( XDB22040502 ), China Postdoctoral Science Foundation (2018M642532), the Fundamental Research Funds for the Central Universities ( WK2090050046), the Collaborative Innovation Center of Suzhou Nano Science and Technology, and the Fundamental Research Funds for the Central Universities. Conflict of interest The authors declare no conflict of interest.

摘要/Abstract

摘要：

结合Stoney公式的多光臂应力测量方法能够有效检测出薄膜电极在充放电过程中的平均应力.然而,经典Stoney公式仅适用于低应力水平的情况.运用修正的Stoney公式考虑了硅电极材料力学性质的变化和基底曲率剧烈变化情况下电极薄膜中应力的演化规律.基于应力和扩散相互耦合的三维非线性有限元模型,验证了修正Stoney公式的准确性.进一步,讨论了曲率分叉出现的条件,确保使用修正的Stoney公式时避免出现曲率分叉行为.

关键词: , 修正Stoney公式, 有限元, 分叉, 应力, 塑性, 大变形

Abstract:

The multi-beam optical stress sensor method combined with Stoney equation is an effective approach to measure in-situ average stress in thin film electrodes upon lithiation / delithiation. However, the classic Stoney formula is applicable only at low stress states. A modified Stoney formula for stress measurement in thin-film Si electrodes was applied to account for the combined effects of the Li concentration-dependent material properties and large substrate curvature change. The numerical results based on three-dimensional non-linear finite element model for the full coupling of large deformation and Li diffusion confirm the accuracy of the modified Stoney equation. Further, a critical condition for the curvature bifurcation was discussed, which should be avoid when using the modified Stoney equation.

Key words: modified stoney formula, finite element analysis, bifurcation, stress, plasticity, large deformation

中图分类号:

刘佩琳, 陆宇阳, 郑东昌, 何陵辉, 倪勇∗ . 应用修正Stoney公式原位测量硅薄膜电极中的锂化应力 [J]. 中国科学技术大学学报, 2020, 50(12): 1516-1524.

LIU Peilin, LU Yuyang, ZHENG Dongchang, HE Linghui, NI Yong∗ . Modified Stoney formula for in-situ lithiation stress measurement in thin-film Si electrode [J]. Journal of University of Science and Technology of China, 2020, 50(12): 1516-1524.

[1]	黄渡，吴小平. 起伏地形下时间域激发极化法三维非结构有限元数值模拟[J]. 中国科学技术大学学报, 2020, 50(5): 705-714.
[2]	陈冲，杨大鹏. 静载荷作用下三维线弹性弯曲裂纹路径预测[J]. 中国科学技术大学学报, 2019, 49(9): 723-730.
[3]	胡亚东，罗林，姜志忠，李春京，陈建伟. 拉应力下T91钢在550 ℃液态铅铋中的腐蚀行为[J]. 中国科学技术大学学报, 2018, 48(5): 378-384.
[4]	孙欣，柴国钟，鲍雨梅. 核反应堆压力容器的热-机械耦合及断裂分析[J]. 中国科学技术大学学报, 2017, 47(6): 491-497.
[5]	叶敏，陈海波，张会武，赵秀珍. 螺栓连接对外力荷载下输电塔的影响[J]. 中国科学技术大学学报, 2017, 47(6): 498-507.
[6]	KARDAPOLTSEV L.V. (代表SND合作组). 在VEPP-2000正负电子对撞机上寻找η'→e+e-和η→e+e-[J]. 中国科学技术大学学报, 2016, 46(6): 528-532.
[7]	吕文朝. 轴流式叶轮机 S2 流面半反命题不可压流动的局部线性化有限元法[J]. 中国科学技术大学学报, 2015, 45(5): 409-415.
[8]	刘磊，刘亚东，张亚军，徐胜利. 含不同角度穿透裂纹板拉伸断裂的有限元模拟[J]. 中国科学技术大学学报, 2012, 42(4): 270-278.
[9]	洪磊，苏亚辉，田洁，黄文浩. 黏弹性材料纳米压痕测试及接触形貌的影响[J]. 中国科学技术大学学报, 2011, 41(5): 432-438.
[10]	张天林，陈宇航，黄文浩，王翔. 纳米压痕中针尖效应的分析[J]. 中国科学技术大学学报, 2009, 39(4): 403-408.
[11]	姚雪彪. 细胞动力学研究进展与展望[J]. 中国科学技术大学学报, 2008, 38(8): 878-882.
[12]	阮迪云. 铅对神经系统学习记忆功能的损伤及药物的修复机制[J]. 中国科学技术大学学报, 2008, 38(8): 1007-1016.

应用修正Stoney公式原位测量硅薄膜电极中的锂化应力

Modified Stoney formula for in-situ lithiation stress measurement in thin-film Si electrode

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 12

编辑推荐

Metrics

本文评价