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硫缺陷诱导的TiS1.94作为高容量和长寿命离子电池的阳极材料
Chunlei Wang1, Chunyu Zhao2, Xiangjun Pu3
1Key Laboratory of Hydraulic Machinery Transients, Ministry of Education, School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China.
ACS applied materials & interfaces
|March 29, 2024
概括
硫缺陷工程TiS1.94 (D-TiS1.94) 显示出作为水性离子电池 (ZIB) 的阳极的希望. 这种材料提供了高容量和稳定性,解决了ZIB技术的关键挑战.
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:
- 水性离子电池 (ZIB) 对储能具有吸引力,但面临着诸如树突和腐蚀等阳极限制.
- 开发稳定,高性能阳极材料对于推进ZIB技术至关重要.
研究的目的:
- 设计和研究一种具有增强电化学性能的ZIBs的新型间隔阳极材料.
- 通过材料工程解决ZIB中传统金属阳极的局限性.
主要方法:
- 硫缺陷工程被用来制造TiS1.94 (D-TiS1.94) 作为ZIB阳极材料.
- 评估了电化学性能,包括容量,速率能力和循环稳定性.
- 组装和测试了一个完整的ZIB细胞 (D-TiS1.94红色ZnMnO2).
主要成果:
- D-TiS1.94在0.05Ag-1下表现出219.1mAhg-1的高Zn2+储存能力,并在5Ag-1下保持107.3mAhg-1的高储存能力.
- 该材料表现出极好的循环稳定性,在1500个循环后保持50.3%的容量,体积变化为8.1%.
- D-TiS1.94 能使ZnMnO2 充满电池实现了 155.7 mA hg-1 的放电容量,在 400 个循环中保持 59.8% 的电量.
结论:
- 在TiS1.94中的硫缺陷工程有效地增强了Zn2+存储,为ZIB阳极提供高容量,速率能力和循环寿命.
- D-TiS1.94为金属阳极提供了可行的替代方案,为实用,高性能水性ZIB铺平了道路.
- 缺陷工程策略为开发用于电化学能量存储的先进电极材料提供了有价值的方法.
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