硫化钴/碳纳米纤维膜对电极的制备与优化

Preparation and Optimization of Cobalt Sulfide/Carbon Nanofiber Membrane Counter Electrode

用静电对喷的方法将电催化性能优异的硫化钴(CoS)纳米颗粒负载到纳米纤维膜上,然后经过碳化得到硫化钴/碳纳米纤维膜(CoS/CNFs)对电极,CoS虽然电催化性能优异,但其导电性不佳,为了进一步提高CoS/CNFs的导电性与电催化性能,引入导电性优良并具备一定电催化性能的纳米银(Ag)颗粒制备硫化钴-银/碳纳米纤维膜(CoS-Ag/CNFs)对电极,并研究了它们的力学性能、柔韧性、导电性及电催化性能。结果表明,与CoS/CNFs对电极相比,纳米银颗粒的引入导致CoS-Ag/CNFs的力学性能及柔韧性下降,但却提高了它的导电性与电催化性能。

The cobalt sulfide(CoS)nanoparticles with excellent electrocatalytic properties were loaded onto the nanofiber membrane by electrostatic spraying,and then,the cobalt/carbon nanofiber membrane(CoS/CNFs)counter electrode was obtained by carbonization.CoS has excellent electrocatalytic properties,but its conductivity is poor.In order to further improve the electrical conductivity and electrocatalytic properties of CoS/CNFs,the silver(Ag)nanoparticles with good electrical conductivity and electrocatalytic properties were introduced to prepare cobalt sulfide-silver/carbon nanofiber membrane(CoS-Ag/CNFs)counter electrode.The mechanical properties,flexibility,electrical conductivity and electrocatalytic properties of CoS/CNFs and CoS-Ag/CNFs were investigated.The results show that the mechanical properties and the flexibility of CoS-Ag/CNFs decrease compared with the CoS/CNFs,but the conductivity and electrocatalytic properties improve.