Scholarlink

<p>The unstable zinc (Zn) interface derived from undesired dendrite growth and parasitic reactions hinders the practical application of rechargeable zinc-ion batteries. Herein, we introduce 1-(2-pyridylazo)-2-naphthol (PAN) as a parts-per-million (ppm) level electrolyte additive to enhance the interfacial stability of Zn anode. Theoretical and experimental results demonstrate that PAN can parallel adsorb on the Zn surface and form strong π-π interactions between PAN molecules, helping to repel water molecules highly efficiently. Moreover, PAN featuring OH, pyridine N and azo N groups can chelate with Zn<sup>2+</sup> and optimize the diffusion behavior of Zn<sup>2+</sup>, inducing even Zn deposition and suppressing dendrite growth. Remarkably, 10 ppm (0.04 mM) PAN additive contributes to a long lifespan of 1500 h in a symmetrical cell at 2 mA cm<sup>−2</sup> and 1 mAh cm<sup>−2</sup>. Also, the cycle stability of Zn∥NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> and Zn∥MnO<sub>2</sub> full cells showcases obvious enhancement. The Zn∥NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> pouch cell exhibits impressive capacity retention of 71.1% after 250 cycles at a rate of 0.8 A g<sup>−1</sup>. This work provides a promising pathway for selecting high-efficient additives applied in aqueous metal-based 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

Parallel adsorption of parts-per-million level additives for highly efficient aqueous zinc-ion battery

  • 期刊论文

  • 发表日期：

    2025年10月14日

查看全文
  • Zhendong Li,
  • Meilan Xie,
  • Yurou Wu,
  • Kai Fu,
  • Lihan Wang,
  • Jiarui Zhang,
  • Siming Chen,
  • Lin Huang,
  • Cailing Liu,
  • Dui Ma,
  • Hongbo Huang,
  • Yaqi Liao,
  • Fanyan Zeng,
  • Xiao Liang

摘要

The unstable zinc (Zn) interface derived from undesired dendrite growth and parasitic reactions hinders the practical application of rechargeable zinc-ion batteries. Herein, we introduce 1-(2-pyridylazo)-2-naphthol (PAN) as a parts-per-million (ppm) level electrolyte additive to enhance the interfacial stability of Zn anode. Theoretical and experimental results demonstrate that PAN can parallel adsorb on the Zn surface and form strong π-π interactions between PAN molecules, helping to repel water molecules highly efficiently. Moreover, PAN featuring OH, pyridine N and azo N groups can chelate with Zn2+ and optimize the diffusion behavior of Zn2+, inducing even Zn deposition and suppressing dendrite growth. Remarkably, 10 ppm (0.04 mM) PAN additive contributes to a long lifespan of 1500 h in a symmetrical cell at 2 mA cm−2 and 1 mAh cm−2. Also, the cycle stability of Zn∥NH4V4O10 and Zn∥MnO2 full cells showcases obvious enhancement. The Zn∥NH4V4O10 pouch cell exhibits impressive capacity retention of 71.1% after 250 cycles at a rate of 0.8 A g−1. This work provides a promising pathway for selecting high-efficient additives applied in aqueous metal-based batteries.