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在氨基瓦纳酸盐中利用层间活性有机聚合物定,实现高容量和耐用的离子储存

Xin Wang¹, Libin Zhang¹, Xiangyu Wang¹

¹Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China.

Journal of colloid and interface science

|November 13, 2025

概括

一种新型的瓦纳酸和聚二硫化-1,4-基) 复合物增强了水性离子电池阴极. 这种双活性站点材料提高了离子动力学和结构稳定性,用于高容量,持久的能量存储.

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:

瓦纳酸 (NVO) 显示出水性离子电池 (AZIB) 阴极的希望,这是由于其多电子氧化还原和稳定的分层结构.
然而,NVO因缓慢的Zn2+动力学和脱氨分解而降解,限制了其实际应用.

研究的目的:

通过将聚二硫化-1,4-基 (PSBQ) 插入NVO中,为AZIBs开发一种双活性位点复合阴极材料.
为了提高基于NVO的阴极的电化学性能,结构稳定性和循环寿命.

主要方法:

一个单步NVO-PSBQ复合物的热水合成.
在现场将PSBQ插入NVO中间层.
电化学表征包括容量,速率性能和循环稳定性测试.

主要成果:

该NVO-PSBQ复合材料表现出10.2 Å的扩展层间距,优化电荷分布,并降低了Zn2+扩散障碍.
复合材料在1Ag-1时达到410mAhg-1的高可逆容量,并在5Ag-1.1时保持250mAhg-1的高可逆容量.
证明了卓越的长期耐用性,在1500个周期内保持82.3%的容量.

结论:

无机-有机协同插入是设计先进的AZIB阴极材料的有效策略.
NVO-PSBQ复合物为高性能和稳定的AZIB提供了一个有前途的解决方案.
NVO和PSBQ之间的协同效应显著提高了电化学性能.

关键词:

氨基瓦纳酸盐的使用情况水性电池中的水性电池双重活动站点.无机有机复合物无机有机复合物

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