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Abstract <p>Platinum-free cathodic electrocatalysts of the hydrogen evolution reaction are developed based on iron complexes of sodium pectate. These catalysts are promising for water electrolysis. The catalyst with 25% substitution of iron ions for sodium ions demonstrates the highest efficiency in the hydrogen evolution reaction and can replace platinum with 93% efficiency when used as the cathodic catalyst in water electrolyzers with proton-exchanging membrane at 80°С.</p>

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Electrocatalytic Properties of Iron–Sodium Pectate Complexes for Hydrogen Evolution Reaction in Proton-Exchange Membrane Systems

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • P. Ya. Enders,
  • A. V. Kozlov,
  • E. A. Soloviev,
  • A. L. Zinnatullin,
  • K. V. Kholin,
  • F. G. Vagizov,
  • E. I. Galeeva,
  • S. T. Minzanova,
  • M. K. Kadirov

摘要

Abstract

Platinum-free cathodic electrocatalysts of the hydrogen evolution reaction are developed based on iron complexes of sodium pectate. These catalysts are promising for water electrolysis. The catalyst with 25% substitution of iron ions for sodium ions demonstrates the highest efficiency in the hydrogen evolution reaction and can replace platinum with 93% efficiency when used as the cathodic catalyst in water electrolyzers with proton-exchanging membrane at 80°С.