碳纳米纤维
静电纺丝
电化学
催化作用
化学
化学工程
镍
电解
纳米纤维
无机化学
材料科学
纳米技术
电解质
有机化学
冶金
碳纳米管
电极
复合材料
工程类
物理化学
聚合物
作者
Jiaqi Xu,Mengxiao Zhong,Na Song,Ce Wang,Xiaofeng Lu
标识
DOI:10.1016/j.cclet.2022.03.082
摘要
It is essential to develop efficient electrocatalysts to generate hydrogen from water electrolysis for hydrogen economy. In this work, platinum (Pt) and nickel (Ni) co-doped porous carbon nanofibers (Pt/Ni-PCNFs) with low Pt content were prepared via an electrospinning, carbonization and galvanic replacement reaction. Because of the high electrical conductivity, abundant electrochemical active sites and synergistic effect between Pt and Ni nanoparticles, the optimized Pt/Ni-PCNFs catalyst shows an excellent HER activity with overpotentials of 20 mV in 0.5 mol/L H2SO4 and 46 mV in 1 mol/L KOH at a current density of 10 mA/cm2. Furthermore, over 35-h long-term stability has been achieved without significant attenuation. This work provides a simple route to prepare highly efficient electrocatalysts for water splitting and has great prospects in the field of renewable energy.
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