构建用于高效析氢反应的核壳结构CoNiMoO4@Co2P自支撑电催化剂
Fabrication of a Freestanding CoNiMoO4@Co2P Core-Shell Electrocatalyst for Efficient Hydrogen Evolution
DOI: 10.12677/ms.2026.162016, PDF,   
作者: 孙 逊：哈尔滨师范大学物理与电子工程学院，黑龙江 哈尔滨
关键词: 析氢反应；电催化剂；核壳结构；协同效应；碱性介质；Hydrogen Evolution Reaction； Electrocatalyst； Core-Shell Structure； Synergistic Effect； Alkaline Medium
摘要: 开发高效、稳定的非贵金属电催化剂对于碱性析氢反应(HER)至关重要，但其动力学过程常受限于缓慢的水解离步骤。本文设计并成功合成了一种新型的核壳结构电催化剂(CoNiMoO4@Co2P)，该材料以结构稳定CoNiMoO4纳米棒为核，以具有优化氢吸附能力和亲水性的Co2P纳米片为壳。这种独特的结构旨在通过核与壳的协同作用，同时加速水的解离和氢气的脱附过程。实验结果表明，所制备的CoNiMoO4@Co2P催化剂在1.0 M KOH电解液中表现出卓越的HER性能，仅需9 mV的过电位即可达到10 mA∙cm−2的电流密度。本研究为设计高性能碱性HER电催化剂提供了一种有效的核壳工程策略。
Abstract: Developing efficient and stable non-precious metal electrocatalysts for the alkaline hydrogen evolution reaction (HER) is critical, yet the reaction kinetics are often hindered by the sluggish water dissociation step. To address this, we designed and synthesized a novel core-shell electrocatalyst, CoNiMoO4@Co2P. This material features structurally robust CoNiMoO4 nanorods as the core, coated with a shell of Co2P nanosheets known for their optimized hydrogen adsorption energy and hydrophilicity. This unique architecture leverages synergistic core-shell interactions to simultaneously accelerate both water dissociation and hydrogen desorption. Electrochemical testing demonstrates that the CoNiMoO4@Co2P catalyst exhibits outstanding HER performance in 1.0 M KOH, requiring an overpotential of only 9 mV to achieve a current density of 10 mA∙cm−2. This work provides an effective core-shell engineering strategy for designing high-performance alkaline HER electrocatalysts.
文章引用：孙逊. 构建用于高效析氢反应的核壳结构CoNiMoO4@Co2P自支撑电催化剂[J]. 材料科学, 2026, 16(2): 1-8. https://doi.org/10.12677/ms.2026.162016

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