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电气双层面向优德性添加剂设计,面向稳定的 Zn 阳极,具有高深度放电

Huida Lyu^1,2, Siwei Zhao^1,2, Chenyi Liao³

¹School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|May 13, 2024

概括

甘醇胆 (GPC) 添加剂通过抑制进化和树生长来稳定水性电池中的阳极. 这使得高排放深度和长期循环可用于先进的能量存储.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
储能储能储能储能储能储能

背景情况:

水性离子电池面临进化反应 (HER) 和树生长的挑战,限制了实际应用.
由于这些问题,当前基于ZnSO4的电解质难以满足性能需求.

研究的目的:

设计一种新型的性添加剂 - - 甘醇胆 (GPC),用于稳定水性电解质中的阳极.
研究GPC调节电双层 (EDL) 结构并抑制有害副作用的机制.

主要方法:

一种高度两极分化的性添加剂 (GPC) 的理性设计.
分析GPC对EDL结构和键网络的影响.
研究GPC在形成保护性固体电解质介相 (SEI) 中的作用.
电化学测试 Zn 阳极和 Zn 基底VS2 完整细胞.

主要成果:

通过调节EDL键网络,GPC有效地抑制了HER.
GPC促进了强大的富含的SEI的形成,防止了树突的生长.
工程 Zn 阳极在高深度放电 (45.3%) 时表现出可逆循环超过 1450 小时.
水性Zn下载VS2全电池实现高容量 (185.7 mAh g$^{-1}$) 和90.4%的保留超过220个周期.

结论:

使用GPC的EDL导向的优化添加剂工程是高性能水性电池的可行策略.
这种方法显著提高了阳极的稳定性和周期寿命.
这些发现为先进的水性能源存储系统提供了对电解质和接口工程的见解.

关键词:

在 Zn 阳极中,有 Zn 阳极.水性离子电池水性离子电池排放的深度排放的深度电气双层的电气双层.欧特克斯欧特克斯欧特克斯是一种

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