| abstract |
The invention relates to a nickel-doped Co 9 S 8 nanosheet bifunctional electrocatalyst and a preparation method thereof, and belongs to the technical field of hydrogen production by total water splitting. The method includes the following steps: (1) depositing a Ni-Co nanosheet precursor on a conductive flexible substrate by an electrodeposition method, (2) using the precursor in step (1) as a raw material, and using a hydrothermal method to prepare nickel doped The Co 9 S 8 nanosheets are obtained. The present invention uses a conductive flexible substrate as a template to form vertically grown Co 9 S 8 nanosheets on its surface through simple electrodeposition and hydrothermal reaction methods, thereby greatly increasing the effective contact area between the nanosheets and the electrolyte. More electrocatalytic active sites are exposed, while the ion diffusion pathway is shortened, which greatly improves the electrocatalytic activity. At the same time, in the present invention, the electronic structure of Co 9 S 8 is effectively regulated by nickel doping, and its electron transfer efficiency and conductivity are significantly improved. |