摘要
Developing efficient,durable,and precious metal-free electrocatalysts is currently a huge challenge.In this article,through a simple one-step high-temperature pyrolysis method,by incorporating various non-metallic element atoms,we prepared four different NiX(X=Cl_(2),(CH_(3)COO)_(2),(NO_(3))2,SO_(4))@CNT catalysts.Additionally,by adjusting the temperature,these four materials were expanded into twelve catalyst materials for comparative optimization of hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)activity.Ultimately,Ni(NO_(3))2@CNT-900 typically exhibits superior OER and HER activity.In 1 mol/L KOH solution with a current density of 10 mA/cm^(2),the overpotentials of HER and OER of Ni(NO_(3))2@CNT-900 are only 145 mV and 300 mV,respectively.Furthermore,the Ni(NO_(3))2@CNT-900 shows excellent durability in both HER and OER.
开发高效、耐用、无贵金属的电催化剂是目前的一个挑战。本文采用简单的一步高温热解法通过结合不同的非金属元素原子,制备了4种不同的NiX(X=Cl_(2),(CH_(3)COO)_(2),(NO_(3))_(2),SO_4)@CNT催化剂。通过调节温度,将这4种材料扩展为12种参考催化剂材料,以比较其析氢反应(HER)和析氧反应(OER)活性。其中,管状纳米结构的Ni(NO_(3))_(2)@CNT-900比其他样品具有更优越的析氢反应和析氧反应活性,当在1 mol/LKOH溶液中电流密度为10 mA/cm^(2)时,其析氢反应和析氧反应的过电位分别为145 mV和300 mV,且具有优异的耐久性。
基金
Project(145209113)supported by the Basic Research Expenses of Department of Education of Heilongjiang Province,China。
作者简介
Corresponding author:YIN Zhuo-xun,PhD,Associate Professor,E-mail:yzx@qqhru.edu.cn,ORCID:https://orcid.org/0000-0002-7413-9609。
