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• W2891942906 abstract "Abstract The sluggish water dissociation kinetics of low-cost Ni3S2 electrocatalysts severely hinders the hydrogen evolution reaction (HER), resulting in unsatisfied overall water splitting in alkaline media. Herein, we demonstrate the self-assembly of a new nanoforest electrocatalyst by ultrathin Ni(OH)2/Ni3S2 heterogeneous nanosheets (∼1.8 nm) using a high-temperature and large-potential electrodeposition technique. The surface atomic configuration of Ni3S2 is well-modulated by hetero-interface engineering with the Ni(OH)2 cocatalyst, effectively accelerating the Volmer step and OH− adsorption during the HER without sacrificing the oxygen evolution reaction (OER). The resultant electrocatalysts exhibit superior and stable electrocatalytic activity toward the HER and OER in 1 M KOH with small overpotentials of 50 mV and 210 mV at 10 mA cm-2, respectively. Using the Ni(OH)2/Ni3S2 nanoforest as dual-functional electrocatalysts, an alkaline electrolyzer can render 100 mA cm-2 at a very low cell voltage of 1.64 V while keep stable for 120 h at 1.55 V, which outperforms the best report for Ni-based electrocatalysts. This finding gives a new insight into the modulating surface atomic configuration for achieving highly active electrocatalysts for water splitting." @default.
• W2891942906 created "2018-09-27" @default.
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• W2891942906 date "2019-03-01" @default.
• W2891942906 modified "2023-10-17" @default.
• W2891942906 title "Heterogeneous interface engineered atomic configuration on ultrathin Ni(OH)2/Ni3S2 nanoforests for efficient water splitting" @default.
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• W2891942906 doi "https://doi.org/10.1016/j.apcatb.2018.09.064" @default.
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