Study on mechanical properties of Lithium-ion battery in hydrothermal salt spray environment under different mechanical abuse conditions

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-07 DOI:10.1016/j.tws.2025.113273

Na Qiu, Jie Yang, Weiling Mou, Mingwei Xiao

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Abstract

Lithium-ion batteries are valued for energy efficiency and long lifespan, yet their performance under extreme environmental conditions is not well understood. This study investigates the effects of hydrothermal salt spray and mechanical stresses, through a combination of accelerated environmental testing and mechanical property analysis. The findings reveald significant casing deterioration due to corrosion, with the elastic modulus decreasing by 76.4 %, 20.5 %, and 18.4 % at 0°, 45°, and 90° orientations, respectively. Gaps in the tab structure allowed NaCl infiltration, causing swelling and compacting of jellyroll structures and mitigating mechanical property degradation. The peak force after corrosion decreased by 12.2 % and 11.6 % during axial and three-point bending compression, respectively, but increased by 4.9 % during radial compression. In dynamic tests, the peak force after corrosion decreased by 13.9 % under hemisphere hammer impact but increased by 15 % under flat hammer impact. Voltage tests indicate that the time required for corrosion to lead to complete failure of the battery four times longer in a fully charged state compared to a depleted state. This emphasized maintaining a higher charge level to improve battery reliability in extreme conditions. These findings provided practical insights for designing more durable batteries and optimizing performance in maritime environments, offering a foundational understanding of lithium-ion battery behavior under such challenges.

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热液盐雾环境下不同力学滥用条件下锂离子电池力学性能研究

锂离子电池因其高能效和长寿命而受到重视，但其在极端环境条件下的性能尚不清楚。本研究通过加速环境试验和力学性能分析相结合的方法，研究了热液盐雾对机械应力的影响。结果表明，套管在0°、45°和90°井眼时，由于腐蚀导致套管严重变质，弹性模量分别下降了76.4%、20.5%和18.4%。膜片结构的间隙允许NaCl的渗透，使果冻状结构膨胀和压实，减轻了力学性能的退化。在轴向和三点弯曲压缩过程中，腐蚀后的峰值力分别下降了12.2%和11.6%，而在径向压缩过程中，腐蚀后的峰值力增加了4.9%。在动态试验中，半球形锤击腐蚀后的峰值力下降了13.9%，而扁锤击腐蚀后的峰值力增加了15%。电压测试表明，在充满电状态下，腐蚀导致电池完全失效所需的时间是耗尽状态下的四倍。这强调了在极端条件下保持更高的充电水平，以提高电池的可靠性。这些发现为设计更耐用的电池和优化海洋环境下的性能提供了实用的见解，为了解锂离子电池在这些挑战下的行为提供了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.