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为可持续的水性离子电池调整质子插入化学
Gyutae Nam1, Chihyun Hwang2,3, Haeseong Jang4
1School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA.
Small (Weinheim an der Bergstrasse, Germany)
|December 8, 2023
概括
研究人员从废水中开发了一种新的阴极材料,用于可充电的水性离子电池 (ZIB). 这种材料提高了电池的性能和耐用性,为更安全,更低成本的储能解决方案铺平了道路.
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
- 可持续能源 可持续能源
背景情况:
- 可充电的水性离子电池 (ZIBs) 为离子电池提供了安全且价格合理的替代品.
- 商业化挑战包括低质量负载和阴极材料的结构不稳定性.
研究的目的:
- 为水性ZIB开发一种新型阴极材料,以提高性能和稳定性.
- 调查和在二氧化中对增强ZIBs的和兴奋剂的作用.
主要方法:
- 从废水中合成一种无序的,,二氧化阴极材料的共同沉合成.
- 在各种电流密度的水性ZIB中对阴极进行电化学测试.
- 操作X射线吸收光谱,分析循环过程中的结构变化.
主要成果:
- 开发的阴极在0.1 A g-1时实现了98%的容量保留,在高质量负载 (15 mg cm-2) 时在1 A g-1时达到72%.
- 和的兴奋剂稳定了结构,抑制了Jahn-Teller扭曲,并抑制了Mn2+的溶解.
- 电极在前20个循环中表现出增强的耐用性,没有容量衰减.
结论:
- 从废水中获得的无序的Co-和Ni-编二氧化是可持续的水性ZIB的有希望的阴极材料.
- 剂诱导的结构稳定是实现高性能和耐用性的关键.
- 优化Ni:Co比率可以进一步提高ZIBs的阴极材料设计.
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