Facile synthesis of cobalt phosphide nanoparticles as highly active electrocatalysts for hydrogen evolution reaction
Facile synthesis of cobalt phosphide nanoparticles as highly active electrocatalysts for hydrogen evolution reaction
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轻松合成磷化钴纳米粒子作为析氢反应的高活性电催化剂
DOI：
10.1016/j.colsurfa.2020.124925
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发表时间：
2020-09
期刊：
影响因子：
--
通讯作者：
Tifeng Jiao
中科院分区：
文献类型：
--
作者：
Shanshan Luo;Peng Hei;Ran Wang;Juanjuan Yin;Wei Hong;Shufeng Liu;Zhenhua Bai;Tifeng Jiao
电催化水裂解反应包括析氢反应（HER）和析氧反应（OER）。它为生产高纯度氢气作为可持续能源提供了一种有效方法。为了解决日益严重的能源短缺和环境污染问题，迫切需要开发和合成高效、廉价的析氢反应（HER）电催化剂。传统的反应催化剂如Pt/Rh/Ir及其氧化物（如IrO 2、RuO 2）由于价格昂贵、储量少而限制了其作为电催化剂的广泛应用。本文以Co 3 O 4纳米立方体为前驱体，采用磷化法成功合成了CoP纳米晶。CoP纳米晶是一种新型的非金属HER催化剂，可以在碱性条件下工作。在10 mA cm−2的电流密度下，其初始电位仅为87 mV，塔菲尔斜率为105 mV dec−1。该催化剂在1 M KOH溶液中可保持12 h的催化性能，且性能仍能保持在95.44%以上。
Electrocatalytic water splitting reactions include hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). It provides an effective method for producing high-purity hydrogen as a sustainable energy source. In order to solve the growing energy shortage and environmental damage, the development and synthesis of efficient and inexpensive hydrogen evolution reaction (HER) electrocatalysts is urgently needed. Traditional reaction catalysts such as Pt/Rh/Ir and their oxides (such as IrO2, RuO2) have limited their wide application as electrocatalysts due to their high prices and small reserves. In this work, CoP nanocrystals by phosphating the Co3O4nanocubes precursor were successfully synthesized. CoP nanocrystals are a new type of non-metallic HER catalyst that can work under alkaline conditions. Its initial potential is only 87 mV at a current density of 10 mA cm−2, and the Tafel slope is 105 mV dec−1. The catalyst can maintain the catalytic performance for 12 h in 1 M KOH solution, and the performance can still be maintained above 95.44%.
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