Strong Electronic Interaction in Dual-Cation-Incorporated NiSe2 Nanosheets with Lattice Distortion for Highly Efficient Overall Water Splitting

The bimetallic ion doped precursor was prepared by precursor implantation, and the product was obtained after high temperature annealing. Its electrochemical performance was tested by Chenhua 760E equipment;• Data collection time: 2017.05-2018.06;• Table data: ICP content of each element in the product, exchange current density calculation, literature performance comparison data;• Some individual data may not be retained;• There are errors in individual data. The reasons for introducing errors include: temperature control of annealing tube furnace, difference in intrinsic resistance of electrode, difference in sensitivity of electrochemical workstation, etc;