Scholarlink

<p>In this work, the bio-surfactant L-rhamnose (Rha) was added into the zinc sulfate electrolytes in aqueous zinc batteries (aZIBs) to enhance the stability of zinc anode undergoing long cycle plating/peeling process. The introduction of hydrophilic Rha can disrupt the hydrogen bonding network and restrict the activity of water in the electrolytes, leading to a decrease in hydrogen evolution potential from − 0.149 to − 0.183&#xa0;V. Meanwhile, the solvation of Rha formed by replacing original Zn(H<sub>2</sub>O)<sub>6</sub><sup>2+</sup> structure can be more effectively absorbed onto zinc anode, promoting the uniform deposition of zinc ions. Under the action of Rha, the cycle life of Zn||Zn cells exceeds 1800&#xa0;h, and that the Zn||Cu cells have a stable cycle of 841 times with average coulombic efficiency of 99.4979% at 1&#xa0;mA&#xa0;cm<sup>−2</sup> and 1&#xa0;mAh&#xa0;cm<sup>−2</sup>. Additionally, the Zn||MnO<sub>2</sub> full cells maintained 350 cycles and theoretical capacity of 88.4% at 0.5&#xa0;C.</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

Solvation substitution of natural hydrophilic additive for highly stable zinc anode in aqueous zinc-ion batteries

  • 期刊论文

  • 发表日期：

    2025年6月11日

查看全文
  • Yutong Wu,
  • Yi-Wei Fan,
  • Yuhao Wen,
  • Lina Zhao,
  • Zhiwei Yu,
  • Ge Xu

摘要

In this work, the bio-surfactant L-rhamnose (Rha) was added into the zinc sulfate electrolytes in aqueous zinc batteries (aZIBs) to enhance the stability of zinc anode undergoing long cycle plating/peeling process. The introduction of hydrophilic Rha can disrupt the hydrogen bonding network and restrict the activity of water in the electrolytes, leading to a decrease in hydrogen evolution potential from − 0.149 to − 0.183 V. Meanwhile, the solvation of Rha formed by replacing original Zn(H2O)62+ structure can be more effectively absorbed onto zinc anode, promoting the uniform deposition of zinc ions. Under the action of Rha, the cycle life of Zn||Zn cells exceeds 1800 h, and that the Zn||Cu cells have a stable cycle of 841 times with average coulombic efficiency of 99.4979% at 1 mA cm−2 and 1 mAh cm−2. Additionally, the Zn||MnO2 full cells maintained 350 cycles and theoretical capacity of 88.4% at 0.5 C.