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用硫驱动的结构增强,用于长寿命的离子储存

Haiyang Wu¹, Diwen Zhang², Yilei Yue³

¹Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, Hubei, China.

Inorganic chemistry

|May 19, 2025

概括

用硫添加的二氧化 (S-VO2) 通过提高阴极稳定性和电荷传输来增强水性离子电池 (AZIB). 这种新型材料为先进的能源存储提供了更高的容量和长期耐用性.

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:

高性能阴极材料对于水性离子电池 (ZIB) 的发展至关重要.
挑战包括提高稳定性和电荷运输动力学,同时抑制材料降解.

研究的目的:

开发一种用于ZIBs的新型阴极材料,使用硫二氧化 (S-VO2).
为了研究加入硫对电子结构,瓦纳溶解和电化学性能的影响.

主要方法:

合成 S-VO2 阴极材料.
电化学测试包括特定容量,循环稳定性和速率能力.
使用现场XRD,现场Raman,XPS,XANES和EXAFS进行材料表征.

主要成果:

S-VO2阴极在0.1 A g-1下产生了386.3 mA h g-1的高特异容量.
卓越的长期循环稳定性,在2.0A g-1的1600个循环后保持79.6%的容量,在10.0A g-1的6000个循环后保持80.3%.
硫兴奋剂诱导氧气空缺,增强导电性,加强V-O键,并稳定了的局部协调环境.

结论:

硫注射是一种有效的策略,可以提高VO2基阴极对ZIB的性能和稳定性.
硫和氧缺陷的协同效应优化了下一代AZIBs的阴极材料设计.
S-VO2为实现高性能和可靠的水性离子电池系统提供了一个有希望的途径.

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