An Ideal Elasticity Problem for Li-Batteries
An Ideal Elasticity Problem for Li-Batteries
复制标题
锂电池的理想弹性问题
DOI：
10.1515/jmbm.2003.14.6.413
复制
发表时间：
2003
影响因子：
1.8
通讯作者：
S. Hackney
中科院分区：
文献类型：
--
作者：
K. Aifantis;S. Hackney
在可再充电Li电池的充电/放电循环期间，负极和正极由于在活性Li插入颗粒内发生的Li离子插入/脱嵌而膨胀/收缩。在这里，一个简单的弹性问题，它认为嵌入在玻璃基质中的锂活性颗粒的体积膨胀，制定和解决内部应力发展发生在电极内。这篇论文可以被看作是第一次尝试将力学界引入一个新的、有趣的应力分析和断裂研究领域，该领域与用于高能存储材料和燃料电池技术的一类纳米复合材料有关。
During the charge/discharge cycle of rechargeable Li-batteries the negative and positive electrodes expand/contract due to the Li-ion insertion/de-insertion that occurs within the active Li-insertion particles. Here a s imple elasticity problem, which considers the volumetric expansion of Li-active particles embedded in a glass matrix, is formulated and solved for the internal stress development taking place inside the electrode. The paper may be viewed as a first attempt to introduce the mechanics communi ty to a new, interesting area of stress analysis and fracture research pertaining to a class of nanocomposi tes used in highenergy storage materials and fuel cell technology.