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双离子调节的氧化物阴极用于高性能水性离子电池
Kun Ran1,2, Qianlin Chen1,3, Fangxiang Song1
1School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, China.
ACS applied materials & interfaces
|October 3, 2025
概括
这项研究开发了用于水性离子电池 (AZIB) 的新型 (Sn,S) V2O3-x阴极材料. 这些材料具有增强的离子传输和结构稳定性,导致高能量密度AZIB的优越电化学性能和长周期寿命.
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:
- 进步的水性离子电池 (AZIB) 需要具有改进的离子传输和稳定的结构的阴极材料.
- 目前的AZIB技术在实现高能量密度和长期循环稳定性方面面临着挑战.
研究的目的:
- 为AZIB阴极合成和描述新的过渡金属和硫编V2O3基复合材料.
- 研究Sn和S兴奋剂对V2O3.3的形态,结构和电化学性能的协同效应.
主要方法:
- 使用现场金属有机框架模板的兴奋剂策略来合成 (M,S) V2O3-x复合材料.
- 使用诸如静电循环和速率能力测试等技术来评估电化学性能.
- 为了了解兴奋剂效应,进行了结构和形态表征.
主要成果:
- (Sn,S) V2O3-x复合物表现出一个分层的3D花样形态,增强了特定表面积和中等孔.
- 兴奋剂调节了形态,缩短了Zn2+通路,而S兴奋剂增加了氧缺陷和改善了离子扩散.
- 在0.1Ag-1下, (Sn,S) V2O3-x电极实现了552.52mAhg-1的高放电容量,在10.0Ag-1下2000个循环后,在10.0Ag-1下保持了97.25%的优异容量.
结论:
- 协同的Sn和S兴奋剂显著提高了AZIBs基于V2O3的阴极的电化学性能.
- 开发的材料为实现高能量密度和稳定的水性离子电池提供了有希望的途径.
- 形态工程,键强度调节和相变稳定的策略对于设计先进的电池材料是有效的.
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