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有效的兴奋剂策略,以克服先进离子电池的Mn基阴极中的晶格扭曲

Zhenxiang Wang¹, Zhiwang Liu¹, Hongyan Li¹

¹Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, PR China.

Journal of colloid and interface science

|March 27, 2025

概括

兴奋剂增强基阴极材料用于离子电池 (PIB). 这一策略通过减轻格子应变和Jahn-Teller效应来提高容量,稳定性和速率性能.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

由于其结构,基于的金属氧化物对离子电池 (PIB) 是有前途的.
挑战包括 Jahn-Teller 效应和骑自行车时体积应变.

研究的目的:

为了改善电化学性能和减轻基阴极中的晶格应变.
为了研究兴奋剂对酸对PIBs的影响.

主要方法:

用添加酸酸 (P-KMnO-2) 的合成.
电化学表征包括循环稳定性和速率性能测试.
结构分析以了解兴奋剂的作用.

主要成果:

P-doped酸 (P-KMnO-2) 显示了增强的K+储存能力.
稳定的格子结构抑制了Jahn-Teller效应和散装应变.
提高了电速性能,降低了电荷传输阻力和K+扩散屏障.
在1000 mA g-1下,P-KMnO-2实现了50.97 mAh g-1,在500 mA g-1下进行了500个循环后,在1000 mA g-1下保持了41 mAh g-1.
使用P-KMnO-2和软碳的全电池达到176.4Wh kg-1的能量密度.

结论:

兴奋剂是一种有效的策略,用于增强基阴极材料的PIBs.
P-KMnO-2提供了更好的容量,稳定性和速度性能.
这项工作有助于开发用于高效离子能量存储的先进材料.

关键词:

阴极材料是以阴极为材料的.有层的金属氧化物.在P-KMnO-2中.离子电池是一种离子电池.

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