Scholarlink

<p>The development of aqueous zinc metal batteries is hindered by dendritic growth, parasitic side reactions, and unstable electrode-electrolyte interface, leading to rapid capacity fading. To address these issues, we rationally screen and identify a pair of complementary additives, methyl propionate and L-cysteine, to synergistically regulate zinc ion solvation structure and interfacial chemistry. Methyl propionate primarily lowers the energy barrier for zinc ion desolvation by weakening the interaction between zinc ions and water molecules, while L-cysteine stabilizes the interface by forming a protective and inorganic-rich solid electrolyte interphase through strong adsorption and preferential reduction. Besides, the incorporation of methyl propionate and L-cysteine reorganize the hydrogen-bond network, lower water activity, and suppress parasitic reactions. Consequently, the optimized electrolyte enables Zn||Zn symmetric cells to deliver stable plating/stripping over 500 h at 10 mA cm<sup>−2</sup> and 10 mAh cm<sup>−2</sup>. This work demonstrates a molecular-level design strategy that integrates solvation regulation with solid electrolyte interphase engineering, providing insights into the rational design of aqueous zinc metal batteries.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electrolyte additive screening for co-regulation of solvation and solid electrolyte interphase in aqueous zinc batteries

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月18日

查看全文
  • Shaocong Tang,
  • Jiabao Li,
  • Tian Wang,
  • Tianyi Wang,
  • Weiwei Xiang,
  • Ya Xiao,
  • Hong Mu Park,
  • Shenqiu Xu,
  • Jae Su Yu,
  • Huan Pang

摘要

The development of aqueous zinc metal batteries is hindered by dendritic growth, parasitic side reactions, and unstable electrode-electrolyte interface, leading to rapid capacity fading. To address these issues, we rationally screen and identify a pair of complementary additives, methyl propionate and L-cysteine, to synergistically regulate zinc ion solvation structure and interfacial chemistry. Methyl propionate primarily lowers the energy barrier for zinc ion desolvation by weakening the interaction between zinc ions and water molecules, while L-cysteine stabilizes the interface by forming a protective and inorganic-rich solid electrolyte interphase through strong adsorption and preferential reduction. Besides, the incorporation of methyl propionate and L-cysteine reorganize the hydrogen-bond network, lower water activity, and suppress parasitic reactions. Consequently, the optimized electrolyte enables Zn||Zn symmetric cells to deliver stable plating/stripping over 500 h at 10 mA cm−2 and 10 mAh cm−2. This work demonstrates a molecular-level design strategy that integrates solvation regulation with solid electrolyte interphase engineering, providing insights into the rational design of aqueous zinc metal batteries.