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基天极材料用于高性能水性离子电池的异构连接道道

Hao Hu¹, Pengbo Zhao¹, Xuerong Li¹

¹Collaborative Innovation Center of Nonferrous Metals, School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.

Journal of colloid and interface science

|March 29, 2024

概括

研究人员开发了一种新的BiVO4@VO2异质连接阴极,用于可充电的水性离子电池 (ZIB). 这种材料提供了高容量,优良的稳定性和速度性能,推进了ZIB技术.

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:

可充电的水性离子电池 (ZIB) 是离子电池的安全,经济有效和环保的替代品.
目前的ZIB阴极结构不稳定,容量低,反应动力慢,阻碍了它们的实际应用.

研究的目的:

设计和合成一个BiVO4@VO2异构连接的阴极材料,以提高ZIB性能.
在水态和准固态ZIB中研究新型阴极的电化学特性.

主要方法:

制造一个BiVO4@VO2 (BVO@VO) 异质连接的阴极材料.
在水态和准固态ZIB中对BVO@VO阴极的电化学表征,包括容量,周期稳定性和速率性能测试.

主要成果:

BVO@VO阴极在0.1 A g-1.1时实现了262 mAh g-1的高容量.
经过 1000 个循环以 2 A g-1.1 的 2 个循环后,证明了卓越的循环稳定性,保持了 96% 的容量.
显示出出色的速率能力,在5.0 A g-1.1时保留了218 mAh g-1.
灵活的准固态ZIB在0.1Ag-1.1的100个周期中显示出234mAhg-1的容量.

结论:

BiVO4@VO2异构连接有效地提高了ZIB中的离子扩散和电化学性能.
这项研究为开发高级离子电池系统的高性能基阴极提供了有前途的方法.

关键词:

水性 Zn 离子电池的电池.比斯密瓦纳达特的时间异质连接结构的结构是异质连接.高速性能的高率性能.几乎固态的半固态状态.

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