Abstract Herein, a novel operating life (OL) test method was evaluated with 200 mAh pouch-type lithium-ion batteries. By combining the calendar life (CL) test with intermediate pulse power cycling, more realistic life prediction was possible, which encompassed real operation of batteries accompanying with thermal acceleration. Larger capacity decrease and resistance increase of pouch cell were observed in the OL test, which was well explained using the SEI film growth model. After dissemble of pouch cell, capacity loss and resistance increase mostly occurred within anode, reflecting that SEI film growth on anode surface was highly attributable to cell degradation.

中文翻译：

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锂离子软包电池使用寿命估算新方法

摘要 在此，采用 200 mAh 软包型锂离子电池评估了一种新的工作寿命 (OL) 测试方法。通过将日历寿命 (CL) 测试与中间脉冲功率循环相结合，更现实的寿命预测成为可能，其中包括伴随热加速的电池的实际运行。在 OL 测试中观察到软包电池更大的容量下降和电阻增加，这可以使用 SEI 膜生长模型很好地解释。软包电池拆解后，容量损失和电阻增加主要发生在阳极内，反映阳极表面的SEI膜生长高度归因于电池退化。