Study on preparation of FeCoNiZnMo quinary hydroxides and their performances for alkaline water electrolysis

DAI Yeqi; XU Wenwen; LU Zhiyi

doi:10.12434/j.issn.2097-2547.20250021

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Study on preparation of FeCoNiZnMo quinary hydroxides and their performances for alkaline water electrolysis

更新时间：2025-12-25

- Study on preparation of FeCoNiZnMo quinary hydroxides and their performances for alkaline water electrolysis
- Vol. 50, Issue 12, Pages: 137-144(2025)
- 作者机构：
  
  1.中国科学院宁波材料技术与工程研究所全省先进燃料电池与电解池技术重点实验室，浙江宁波 315201
  2.中国科学院大学化学科学学院，北京 101408
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250021
  CLC： TQ151.1
- Received：15 January 2025，
  
  Revised：2025-03-05，
  
  Published：25 December 2025
- 稿件说明：
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戴烨琪,徐雯雯,陆之毅.FeCoNiZnMo五元氢氧化物制备及其碱性电解水性能研究[J].低碳化学与化工,2025,50(12):137-144.

DAI Yeqi,XU Wenwen,LU Zhiyi.Study on preparation of FeCoNiZnMo quinary hydroxides and their performances for alkaline water electrolysis[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(12):137-144.
戴烨琪,徐雯雯,陆之毅.FeCoNiZnMo五元氢氧化物制备及其碱性电解水性能研究[J].低碳化学与化工,2025,50(12):137-144. DOI： 10.12434/j.issn.2097-2547.20250021.

DAI Yeqi,XU Wenwen,LU Zhiyi.Study on preparation of FeCoNiZnMo quinary hydroxides and their performances for alkaline water electrolysis[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(12):137-144. DOI： 10.12434/j.issn.2097-2547.20250021.

摘要

碱性电解水（ALK）制氢是目前极具潜力的绿色制氢方式之一。开发价格低廉的非贵金属基催化剂作为阴、阳极催化剂，有助于推动ALK工业化进程，其中过渡金属氢氧化物催化剂的制备工艺简单、活性较好，是理想的碱性电解水制氢催化剂。以Fe、Co、Ni、Zn和Mo盐作为原料，在镍网基底上采用脉冲电沉积法制得FeCoNiZnMo五元氢氧化物，并采用SEM、TEM和XPS等对其物化性质进行了表征。结果表明，相比于四元氢氧化物，五元氢氧化物中各金属间的耦合作用能够同时提高Ni和Co的价态，有利于提高催化剂的析氧活性和析氢活性。此外，对FeCoNiZnMo五元氢氧化物在1 mol/L NaOH溶液中进行了电解水析氧、析氢性能测试和全解水两电极稳定性测试。结果表明，FeCoNiZnMo五元氢氧化物在100 mA/cm

的电流密度下析氧和析氢的过电位分别为307 mV和223 mV，在两电极体系200 mA/cm

的电流密度下具备200 h的稳定性。

Abstract

Alkaline water electrolysis (ALK) for green hydrogen production is one of the highly promising alternative to fossil fuels. To further advance its industrialization

research has focused on developing non-noble metal catalysts for both cathode and anode

as these materials are cost-effective. Among non-noble metal catalysts

transition metal hydroxide catalysts are particularly well-suited for alkal

ine water electrolysis due to their simple preparation process and better electrocatalytic performance. Herein

and Mo metal salts were used as raw materials to obtain FeCoNiZnMo quinary hydroxides with a nanoflower structure via pulsed electrodeposition on a Ni mesh. The physical and chemical characterizations of FeCoNiZnMo quinary hydroxides were analyzed by SEM

TEM and XPS. Compared to the low-entropy quaternary hydroxides

the coupling effect among quinary metals in the high-entropy hydroxides could simultaneously increase the oxidation states of nickel and cobalt elements

which is conducive to enhancing its activity of oxygen evolution and hydrogen evolution. Additionally

the oxygen evolution reaction and hydrogen evolution reaction performances of the FeCoNiZnMo hydroxides in 1 mol/L NaOH solution were assessed

alongside a two-electrode stability test for overall water splitting. The results indicate that FeCoNiZnMo hydroxides exhibit oxygen evolution reaction and hydrogen reaction overpotentials of 307 mV and 223 mV at current density of 100 mA/cm

respectively. Furthermore

FeCoNiZnMo hydroxides exhibit long-term stability for 200 h at 200 mA/cm

关键词

Keywords

references

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