抑制高性能水性离子电池的氧化物中的Jahn-Teller扭曲
Jiangfeng Duan1, Man Huang1, Ming Song2
1Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
Materials (Basel, Switzerland)
|June 27, 2025
概括
氧化物 (MnOx) 对水性离子电池 (AZIB) 是有前途的,但 Jahn-Teller 扭曲 (JTD) 效应导致不稳定. 本综述探讨了JTD机制和策略,以改善MnOx阴极性能,以获得更好的AZIB.
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:
- 氧化物 (MnOx) 是水性离子电池 (AZIB) 的主要阴极材料,因为它们的经济可行性,高容量和环保性.
- 由Mn3+引起的Jahn-Teller扭曲 (JTD) 效应,通过诱导结构变形和容量衰减,严重限制了AZIB的性能.
研究的目的:
- 系统地审查MnOx阴极中JTD的基本机制.
- 批判性地讨论抑制JTD和提高AZIB性能的策略.
- 建议未来的研究方向,以开发先进的基于MnOx的储能系统.
主要方法:
- 在MnOx.中对JTD机制的文献综述.
- 分析策略,包括兴奋剂,层间工程,表面修饰和电解质优化.
- 讨论材料设计的现场表征和机器学习.
主要成果:
- 在MnOx阴极中的JTD导致有害的电子结构变化和晶格扭曲.
- 抑制策略,如兴奋剂和接口工程,可以显著提高结构稳定性和Zn2+储存.
- 先进的表征和计算方法对于理解和减轻JTD至关重要.
结论:
- 克服JTD对于充分发挥MnOx在AZIB中的潜力至关重要.
- 需要多方面的方法来提高MnOx阴极的循环稳定性和电化学性能.
- 未来的研究应该集中在创新的材料设计和现场研究上,以指导下一代AZIB的开发.
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