A Wide Range of Testing Results on an Excellent Lithium-Ion Cell Chemistry to be used as Benchmarks for New Battery Technologies
推荐理由
J. R. Dahn组代表性工作，长期测试电池的性能，通过改变电解液添加剂成分维持了几千周的循环寿命
| 文章简介 | |
|---|---|
| 期刊 | Journal of The Electrochemical Society |
| 发表年份 | 2019 |
| DOI | 10.1149/2.0981913jes |
| 类型 | 研究性工作 |
| 领域 | 锂离子电池 |
| 引用量 | 397 |
| 推荐信息 | |
|---|---|
| 推荐人 | 王瀚晨 |
| 审核 | 文雄伟 |
| 推荐小组 | 电池小组 |
摘要
Abstract We present a wide range of testing results on an excellent moderate-energy-density lithium-ion pouch cell chemistry to serve as benchmarks for academics and companies developing advanced lithium-ion and other "beyond lithium-ion" cell chemistries to (hopefully) exceed. These results are far superior to those that have been used by researchers modelling cell failure mechanisms and as such, these results are more representative of modern Li-ion cells and should be adopted by modellers. Up to three years of testing has been completed for some of the tests. Tests include long-term charge-discharge cycling at 20, 40 and 55°C, long-term storage at 20, 40 and 55°C, and high precision coulometry at 40°C. Several different electrolytes are considered in this LiNi0.5Mn0.3Co0.2O2/graphite chemistry, including those that can promote fast charging. The reasons for cell performance degradation and impedance growth are examined using several methods. We conclude that cells of this type should be able to power an electric vehicle for over 1.6 million kilometers (1 million miles) and last at least two decades in grid energy storage. The authors acknowledge that other cell format-dependent loss, if any, (e.g. cylindrical vs. pouch) may not be captured in these experiments.
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