Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, 110034, P. R. China.
Technology R&D Center, Jilin Tobacco Industry Co. Ltd., Changchun, 130031, P. R. China.
Chempluschem. 2022 May;87(5):e202200077. doi: 10.1002/cplu.202200077.
We developed a molten salts process to prepare Co S nanoparticles (NPs) entrapped, S, N co-doped carbons. Cobalt chloride was used as the cobalt source. The melamine-formaldehyde (MF) resin provided the carbon source and nitrogen source, and thiourea provided sulfur source. In addition, common inorganic salts were added as templates to generate pores. The characterization results showed that the prepared materials contained high contents of N, S and Co, and were mesoporous composites. At the same time, the porosity of electrocatalyst depended on the type of salt and the mass ratio of precursor to salt, which further affected the electrocatalytic activity of hydrogen evolution reaction (HER). The best prepared catalyst showed excellent HER performance. The onset overpotential of the catalyst was low (33 mV) and had a small Tafel slope (61.1 mV dec ), in addition to good stability in alkaline media.
我们开发了一种熔融盐法来制备 Co S 纳米粒子（NPs）嵌入的 S、N 共掺杂碳。氯化钴用作钴源。三聚氰胺-甲醛（MF）树脂提供碳源和氮源，硫脲提供硫源。此外，还添加了常见的无机盐作为模板来产生孔。表征结果表明，所制备的材料含有高含量的 N、S 和 Co，并且是介孔复合材料。同时，电催化剂的孔隙率取决于盐的类型和前体与盐的质量比，这进一步影响了析氢反应（HER）的电催化活性。最佳制备的催化剂表现出优异的 HER 性能。该催化剂的起始过电势低（33mV），塔菲尔斜率小（61.1mV·dec-1），在碱性介质中稳定性良好。
