电池2024，Vol.54Issue(4)：467-472,6.DOI:10.19535/j.1001-1579.2024.04.006
隔膜涂层对钠离子电池性能的影响
Effect of separators coating on the performance of sodium-ion battery
罗善雄 1王畅 1滕久康 1陈晓涛1
作者信息
- 1. 贵州梅岭电源有限公司,特种化学电源全国重点实验室,贵州遵义 563000
- 折叠
摘要
Abstract
Commercial Li-ion battery polymer separators show poor wettability with the sodium-ion battery electrolyte.Commercial ceramic-coated separators (CCS) can solve the problem of poor wettability.Under the action of the nano Al2O3 ceramic coating,the electrolyte is better absorbed by the CCS and through the CCS.The shrinkage and deterioration degree of the CCS after shelving at 150 ℃ for 1.5 h is smaller than that of the Celgard 2500 base separator,indicating that the CCS have better wettability and thermal stability than the base separator.The effect of CCS on the electrochemical performance of hard carbon (HC)/Na3V2(PO4)3 (NVP) button cell is studied,it is found that when the coating of CCS (7 μm base separator+2 μm coating) is towards the anode side,the capacity retention rate of battery is 88.52％ after 100 cycles at 1.0 C in 2.0-3.8 V,the specific discharge capacity at 5.0 C is 68.35 mAh/g,the performance is better than that of the ordinary base separator (48.36％,40.86 mAh/g).It shows that Al2O3 ceramic separators has application potential in sodium-ion battery.关键词
钠离子电池/涂层隔膜/电解液/润湿性Key words
sodium-ion battery/coating separator/electrolyte/wettability分类
信息技术与安全科学引用本文复制引用
罗善雄,王畅,滕久康,陈晓涛..隔膜涂层对钠离子电池性能的影响[J].电池,2024,54(4):467-472,6.
