催化作用
电催化剂
热解
咪唑酯
化学工程
化学
碳纤维
材料科学
沸石咪唑盐骨架
无机化学
过电位
电化学
塔菲尔方程
金属有机骨架
复合数
电极
物理化学
吸附
有机化学
复合材料
工程类
作者
Yanqiu Jing,Hongfei Yin,Yonghui Zhang,Baohua Yu
标识
DOI:10.1016/j.ijhydene.2020.05.035
摘要
In this study, Zn, S, and P co-doped nitrogen N-enriched carbon (ZnSP/NC) was successfully fabricated as an efficient electrocatalyst for the hydrogen evolution reaction (HER) process via pyrolysis, sulfurization, and phosphorization. The metal Zn derived from zeolitic imidazolate framework-8 (ZIF-8) was combined with the S element to form ZnS nanoparticles, and then embedded in N-enriched carbon during the sulfurization process. Following this, the P element was well-dispersed in the catalyst via phosphorization. It was found that ZnSP/NC exhibits excellent electrocatalytic activity when used as a catalyst for the HER process. ZnSP/NC, with an overpotential of 171 mV and a Tafel slope of 54.78 mV dec−1, demonstrates superior electrocatalytic activity as compared to Zn/NC (277 mV, 92.34 mV dec−1) and ZnS/NC (241 mV, 76.41 mV dec−1). During the HER process, ZnS and P serve as active sites, while the N-enriched carbon provides reliable electronic transmission. The synergistic effects among the ZnS, P, and N-enriched carbon result in an excellent electrocatalytic activity of ZnSP/NC for the HER process.
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