It is of great significance to design a non-noble metal based catalyst with high activity and stability for the application of electrocatalytic hydrogen evolution.Sulfur phosphorus co-doped graphene (SPG) was successfully synthesized via a simple hydrothermal method using sulfuric acid and phytic acid as dopants.Subsequently,the nickel based nanomaterials grown directly on SPG (named Ni/SPG) were prepared by a simple alcohol thermal method.The prepared Ni/SPG electrocatalyst demonstrated excellent hydrogen evolution performance,such as very low impedance (0.48Ω),active electrochemical surface (32.62m2/g),low initial overpotential (115mV),excellent Tafel slope (115mV/dec) and good cycle stability,and so on.These remarkable electrocatalytic properties were attributed to the more exposed active centers and surface defects of S and P co-doped graphene,which made the Ni with small size evenly dispersed on its surface and promoted the electronic transmission between them.
Zhu Guisheng, Zhang Mingmei, Shao Shouyan, Huang Chunxia, Huang Cheng, Liu Hong
. Study on the preparation of Ni/SPG electrode by hydrothermal method and its electrocatalytic hydrogen evolution performance[J]. New Chemical Materials, 2022
, 50(1)
: 89
-93
.
DOI: 10.19817/j.cnki.issn1006-3536.2022.01.018
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