Scholarlink

<p>Anion exchange membrane water electrolysis (AEMWE) presents unique competitive advantages in terms of material cost, system efficiency, and dynamic response. However, the core components of AEMWE, such as anion exchange membranes (AEMs) and non-precious metal catalysts, still face significant challenges in terms of alkali stability. In this report, a series of poly(terphenyl diphenylmethane piperidinium) (QPDPMTP) membranes with varying proportions was prepared. The alkyl chain of diphenylmethane (DPM) facilitates a more pronounced microphase separation structure and a higher fraction of free volume in the AEMs, significantly enhancing the OH<sup>−</sup> conductivity of the AEMs. The QPDPMTP-10 AEM demonstrated superior OH<sup>−</sup> conductivity (152 mS cm<sup>−1</sup>) at 80 °C, and after soaking in 6 M NaOH at 80 °C for 1032 h, the QPDPMTP-10 AEM retained excellent conductivity retention (90.7%). QPDPMTP-10 was assembled in an AEMWE cell with non-precious metal anode catalysts (NiFeCo LDH/NiS/NF), achieving an excellent current density of 3.11 A cm<sup>−2</sup> at 2 V in 1 M KOH (80 °C), a long-term stable operation in a gradient concentration of KOH (80 °C, 1 A cm<sup>−2</sup>) for 1800 h. Therefore, this study provides a reference for the preparation of AEMs.</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

Poly(terphenyl-diphenylmethane piperidinium) anion exchange membranes assemble with non-precious metal electrodes for high-performance water electrolysis

  • 期刊论文

  • 发表日期：

    2025年9月16日

查看全文
  • Zhaoshuo Yuan,
  • Yujie Liu,
  • Huatong Li,
  • Qian Kong,
  • Haixiao Sun,
  • Qian Qiao,
  • Xuelian Zhang,
  • Hongyu Liu,
  • Yi Tan,
  • Qingyue Ge,
  • Tongguang Xu,
  • Xiaoping Dai,
  • Xin Zhang

摘要

Anion exchange membrane water electrolysis (AEMWE) presents unique competitive advantages in terms of material cost, system efficiency, and dynamic response. However, the core components of AEMWE, such as anion exchange membranes (AEMs) and non-precious metal catalysts, still face significant challenges in terms of alkali stability. In this report, a series of poly(terphenyl diphenylmethane piperidinium) (QPDPMTP) membranes with varying proportions was prepared. The alkyl chain of diphenylmethane (DPM) facilitates a more pronounced microphase separation structure and a higher fraction of free volume in the AEMs, significantly enhancing the OH− conductivity of the AEMs. The QPDPMTP-10 AEM demonstrated superior OH− conductivity (152 mS cm−1) at 80 °C, and after soaking in 6 M NaOH at 80 °C for 1032 h, the QPDPMTP-10 AEM retained excellent conductivity retention (90.7%). QPDPMTP-10 was assembled in an AEMWE cell with non-precious metal anode catalysts (NiFeCo LDH/NiS/NF), achieving an excellent current density of 3.11 A cm−2 at 2 V in 1 M KOH (80 °C), a long-term stable operation in a gradient concentration of KOH (80 °C, 1 A cm−2) for 1800 h. Therefore, this study provides a reference for the preparation of AEMs.