biostudies-literatureXu HTaishan Scholars Program, State Key Laboratory of Bio-Fibers and Eco-TextilesNatural Science Foundation of Shandong ProvinceNational Natural Science Foundation of China657https://www.ebi.ac.uk/biostudies/studies/S-EPMC10856751biostudies-literatureUnknown29(3)Transition metal phosphides (TMPs) have been widely studied for water decomposition for their monocatalytic property for anodic or cathodic reactions. However, their bifunctional catalytic activity still remains a major challenge. Herein, hexagonal nickel-cobalt bimetallic phosphide nanoneedles with 1-3 μm length and 15-30 nm diameter supported on NF (Ni<sub>x</sub>Co<sub>2-x</sub>P NDs/NF) with adjusted electron structure have been successfully prepared. The overall alkaline water electrolyzer composed of the optimal anode (Ni<sub>0.67</sub>Co<sub>1.33</sub>P NDs/NF) and cathode (Ni<sub>1.01</sub>Co<sub>0.99</sub>P NDs/NF) provide 100 mA cm<sup>-2</sup> at 1.62 V. Gibbs Free Energy for reaction paths proves that the active site in the hydrogen evolution reaction (HER) is Ni and the oxygenMolecules (Basel, Switzerland)Electronic Structure Regulated Nickel-Cobalt Bimetal Phosphide Nanoneedles for Efficient Overall Water Splitting.PMC10856751ZR2021ME012 and ZR2021QB02251672143, 22005165, 52102362, 51808303, 22075197, 22278290Qingdao University No. ZFZ201809 and ZDKT202105Tan LLi HDiao LZou YWang CShe XXu HChen SLu PLi LSun JfalseElectronic Structure Regulated Nickel-Cobalt Bimetal Phosphide Nanoneedles for Efficient Overall Water Splitting.Transition metal phosphides (TMPs) have been widely studied for water decomposition for their monocatalytic property for anodic or cathodic reactions. However, their bifunctional catalytic activity still remains a major challenge. Herein, hexagonal nickel-cobalt bimetallic phosphide nanoneedles with 1-3 μm length and 15-30 nm diameter supported on NF (Ni<sub>x</sub>Co<sub>2-x</sub>P NDs/NF) with adjusted electron structure have been successfully prepared. The overall alkaline water electrolyzer composed of the optimal anode (Ni<sub>0.67</sub>Co<sub>1.33</sub>P NDs/NF) and cathode (Ni<sub>1.01</sub>Co<sub>0.99</sub>P NDs/NF) provide 100 mA cm<sup>-2</sup> at 1.62 V. Gibbs Free Energy for reaction paths proves that the active site in the hydrogen evolution reaction (HER) is Ni and the oxygen2024-01-01T00:00:00Z2024 Jan2025-04-05T14:51:21.876Z2025-04-05T14:51:21.876ZS-EPMC108567513833840110.3390/molecules29030657