自组装的均异金属氧化物接口使耐用酸性Zn-Mn电池的协同进化被动化成为可能
Zhipeng Shao1,2,3, Yucheng Xie2, Jie Luo2
1National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
Angewandte Chemie (International ed. in English)
|August 19, 2025
概括
稳定的酸性-电池是通过阳极上的新型异金属氧化物接口实现的. 这种策略可以防止腐蚀和的演变,允许在储能应用中延长循环和高性能.
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:
- 酸性- (Zn-Mn) 电池为大规模储能提供高电压和容量.
- 由于质子腐蚀和演化反应 (HER),酸性介质中的Zn阳极不稳定性限制了电池的寿命.
- 开发稳定的 Zn 阳极对于推进实际的酸性 Zn-Mn 电池技术至关重要.
研究的目的:
- 为长期使用的酸性Zn-Mn电池设计一个稳定的Zn阳极.
- 在强酸性环境中克服由质子腐蚀和HER引起的Zn阳极不稳定性.
- 为了提高Zn-Mn电池的循环性能和安全性,用于储能.
主要方法:
- 使用Cu2+,In3+和Sn4+的多离子协同调节策略,在Zn阳极上创建自组装的异金属氧化物接口.
- 使用SnCl4的水解和与Zn金属的离子替代,形成In-CuZn5和SnO2的异金属氧化物.
- 研究异金属氧化物接口对腐蚀和HER的保护机制,以及其对Zn/脱落的影响.
主要成果:
- 异金属氧化物接口有效地抑制了质子腐蚀和HER,使放电深度超过85.5%,在强酸性介质 (pH=0.9) 中循环超过1000小时.
- 推广的接口要求Zn/剥离,这是由于SnO2的抗酸性和丰富的核化位点.
- 一个Zn-Mn袋式电池表现出1.39 mAh cm-2的高容量,在1 mA cm-2的200个循环后保持84.9%.
结论:
- 自组装的异金属氧化物接口策略成功地解决了酸性电解质中的 Zn 阳极不稳定性.
- 这种方法显著提高了酸性Zn-Mn电池的循环寿命和性能.
- 开发的接口战略显示了对高安全性,大规模储能技术的发展的巨大潜力.
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