Scholarlink

<p>To mitigate zinc dendrite growth at the negative electrode of zinc–vanadium redox flow batteries, a KOH-etched and Cu-coated carbon felt was employed and systematically compared with pristine carbon felt. The electrochemical properties of the modified electrode were evaluated using cyclic voltammetry and electrochemical impedance spectroscopy, revealing a reduced zinc nucleation overpotential, enhanced peak current, and decreased interfacial resistance. Furthermore, zinc symmetric cell and full-cell charge–discharge tests demonstrated significantly improved cycling stability and reduced overpotential. The full cell employing the modified electrode delivered an average Coulombic efficiency (CE) of 100% and an average energy efficiency (EE) of 87.292% over 100 cycles, confirming the effectiveness of the surface modification in suppressing zinc dendrite growth and enhancing overall battery performance.</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

Regulating Zinc Nucleation via KOH-Etched and Cu-Coated Carbon Felt for Stable Zinc–Vanadium Redox Flow Batteries

  • 期刊论文

  • 发表日期：

    2026年4月25日

查看全文
  • Seongbin Kang,
  • Jueun Kim,
  • Eunjeong Song,
  • Hyeyoung Shin,
  • Mihee Park,
  • Minjoon Park

摘要

To mitigate zinc dendrite growth at the negative electrode of zinc–vanadium redox flow batteries, a KOH-etched and Cu-coated carbon felt was employed and systematically compared with pristine carbon felt. The electrochemical properties of the modified electrode were evaluated using cyclic voltammetry and electrochemical impedance spectroscopy, revealing a reduced zinc nucleation overpotential, enhanced peak current, and decreased interfacial resistance. Furthermore, zinc symmetric cell and full-cell charge–discharge tests demonstrated significantly improved cycling stability and reduced overpotential. The full cell employing the modified electrode delivered an average Coulombic efficiency (CE) of 100% and an average energy efficiency (EE) of 87.292% over 100 cycles, confirming the effectiveness of the surface modification in suppressing zinc dendrite growth and enhancing overall battery performance.