酸性水凝使全周期Mn2+/MnO2转化为高能近固态Zn-MnO电池
Wubin Zhuang1,2, Zihan Wang1,2, Chaowei Li1,3
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, China.
Advanced materials (Deerfield Beach, Fla.)
|January 28, 2026
概括
灵活的水性二氧化- (Zn-MnO2) 电池通过使用一种新型的酸性水凝电解质和聚合物涂层的阳极,实现更高的能量密度. 这种设计可以实现两电子的转换,提高可穿戴电子产品的性能.
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:
- 灵活的水性Zn-MnO2电池为便携式电子产品提供安全性和成本效益.
- 由于低MnO2利用 (单电子回氧) 的有限能量密度阻碍了实际应用.
- 需要先进的电解质和电极设计来提高电池性能.
研究的目的:
- 为了提高柔性水性Zn-MnO2电池的能量密度和循环稳定性.
- 为了克服单电子氧化还原反应在MnO2阴极中的局限性.
- 开发一个稳定的酸性水凝电解质和一个受保护的阳极.
主要方法:
- 设计了一种使用聚-2-烯胺-2-甲基硫酸) 和聚烯胺 (PAMPS/PAM) 的酸性水凝电解质.
- 开发了一种聚合物涂层的阳极 (P-Zn) 来抑制的进化.
- 制造并测试了采用新型电解质系统的P-Zn下载MnO2电池.
主要成果:
- 在MnO2阴极中实现了两电子转换 (Mn2+/MnO2).
- 提供了高放电电压 (1.9 V),容量 (592.9 mAh g-1 在 10 A g-1) 和能量密度 (762.6 Wh kg-1).
- 在可穿戴设备的纤维状电池中证明了特殊的耐用性 (> 1000 个周期) 和可行性.
结论:
- 新型酸性水凝电解质和P-Zn阳极有效地提高了MnO2利用率和电池性能.
- 这一策略使高能量密度的柔性Zn-MnO2电池适用于先进的可穿戴电子产品.
- 开发的系统代表了安全,具有成本效益和高性能储能系统的重大进步.
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