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快速导离子的氧酸盐固体电解质间相使得超稳定的金属阳极成为可能.
Qizhen Han1, Lucheng Cai1, Pengfei Huang1
1School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
ACS applied materials & interfaces
|October 4, 2023
概括
在阳极上涂上酸涂层,可以防止离子电池中形成树突. 这种增强确保了稳定的循环和下一代能源存储的性能提高.
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:
- 金属阳极在水性离子电池中具有成本效益,但会受到状物生长和副作用的影响.
- 这些问题阻碍了基于的储能系统的商业可行性.
- 开发保护层对于稳定的阳极性能至关重要.
研究的目的:
- 在阳极上设计一种保护性酸 (HAP) 涂层.
- 调查HAP涂层对树突抑制和阳极稳定性的影响.
- 为了评估HAP涂层阳极在对称和全电池配置中的电化学性能.
主要方法:
- 在 (Zn) 金属阳极上制造酸 (HAP) 表面涂层.
- 使用对称细胞和带有 MnO2 阴极的全细胞进行电化学表征.
- 长期循环测试以评估寿命,极化和速度能力.
主要成果:
- 这种HAP涂层有效地抑制了树的形成和腐蚀.
- 人工固体电解质介相促进了低离子扩散屏障的快速阳极氧化还原动力学.
- Zn@HAP对称细胞的寿命超过2000小时,在1 mA cm−2的温度下,极化最小.
- 带有 Zn@HAP 阳极的充满电池在 1 A g-1 的 500 个循环中显示出稳定的循环运行和出色的速率能力.
结论:
- 酸涂层是一种可行的策略,可以为阳极创建稳定的人工固体电解质介相.
- Zn@HAP 阳极表现出增强的循环稳定性,抑制树突和提高速度性能.
- 这种方法显著推进了水性离子电池的实际应用.
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