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通过在分离器上构建的捕获-吸附-催化策略,Zn-素电池的反自放电能力

Jie Yang¹, Qiqi Dai², Shuang Hou¹

¹Guangdong Provincial Engineering Technology Research Center of Low Carbon and Advanced Energy Materials, Guangdong Provincial Key Laboratory of Chip and Integration Technology, School of Semiconductor Science and Technology, South China Normal University, Foshan, 528225, China.

Advanced materials (Deerfield Beach, Fla.)

|February 5, 2025

概括

这项研究引入了一种新的ZnMn-NC/GF分离器,用于打击水性-素电池中的自放电. 这一策略显著提高了电池的稳定性和寿命,这对于实际应用至关重要.

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Zn-素电池 (Zn-I₂/Br₂) 呈现严重的自放电,导致材料降解和过早故障.
现有的解决方案难以有效地缓解不可逆转的容量损失和阳极腐蚀.

研究的目的:

开发一种新的分离器策略,以抑制水性 Zn-素电池中的自放电.
为了提高-和-电池的稳定性和循环寿命.

主要方法:

用Zn─Mn原子对 (ZnMn-NC/GF) 修改的玻璃纤维分离器的制造.
利用现场拉曼和紫外线光谱,以及理论计算,以阐明机制.
在组装的水性Zn-I和Zn-Br电池中进行了性能测试.

主要成果:

该ZnMn-NC/GF分离器通过吸附聚化并促进中间转换,有效地抑制了自我放电.
Zn-I₂电池在120小时后显示了90.1%的库伦比效率,在30,000个循环后保持了95.3%的容量.
-Br2电池在0.5 A g-1的1.75 V放电平台上表现出更好的稳定性.

结论:

使用ZnMn-NC/GF的捕获-吸附-催化策略显著减轻了水性Zn-素电池中的自放电.
这种方法为开发高性能和耐用的水性-素储能系统提供了一个有希望的途径.

关键词:

催化剂是一种催化剂.离子电池 Zn 离子电池素电池是一种素电池.自主放电是什么意思自主放电分离器分离器分离器分离器分离器分离器

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