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碳热还原合成有稳定储钾性能的KVOPO4用于超长循环寿命钾离子电池
2023-02
許冠南; 李俊峰; 郑云珊
CountryChina
Subtype发明专利Invention
Abstract

聚阴离子化合物正极材料由于其聚阴离子电感效应和结构稳定性,为下一代钾离子电池的高能量密度和长循环提供了广阔的前景。然而,由于在不受调节的固态合成过程中诱导的天然杂质缺陷和高压操作中的降解,实际表现远远低于预期。为了规避这些问题,我们将碳热还原合成方法和截止电压调节策略相结合,开发具有超长循环钾离子电池的KVOPO4正极材料。正极材料在 C/2 下循环 1000 次后能够很好地放电 ~ 63 mAh g-1,每个循环的低容量衰减约 0.013%。此外,通过原位和非原位结构表征证明了K离子存储的高可逆性,并且使用商业硬碳的全电池在700次循环后提供60 mAh g-1的比容量,符合实际应用。

Document TypePatent
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
AffiliationJiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China
Recommended Citation
GB/T 7714
許冠南,李俊峰,郑云珊. 碳热还原合成有稳定储钾性能的KVOPO4用于超长循环寿命钾离子电池[P]. 2023-02-01.
APA 許冠南., 李俊峰., & 郑云珊 碳热还原合成有稳定储钾性能的KVOPO4用于超长循环寿命钾离子电池.
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