首页|Two-dimensional bifunctional electrocatalyst(Mo-NiFe-LDH)with multilevel structure for highly efficient overall water splitting

Two-dimensional bifunctional electrocatalyst(Mo-NiFe-LDH)with multilevel structure for highly efficient overall water splitting

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To effectively address energy challenges,it is crucial to explore efficient and stable bifunctional non-precious metal catalysts.In this study,a Mo-doped nickel-iron layered double hydroxide with flower-cluster archi-tecture was successfully prepared by a one-step hydrothermal method,which demonstrated a good water splitting performance.After an appropriate amount of Mo doping,some lattice distortions in the material provided reactive sites for the adsorption and conversion of inter-mediates,thus optimising the charge distribution of the material.Moreover,the multidimensional void structures formed after doping had a larger specific surface area and accelerated the penetration of the electrolyte,which sig-nificantly improved the activity of the catalyst in alkaline media.At 10 mA.cm-2,the hydrogen and oxygen evolu-tion overpotentials of Mo-doped nickel-iron double hydroxides(Mo-NiFe LDH/NF-0.2)were 167 and 220 mV,respectively,with an excellent durability up to 24 h.When the Mo-NiFe LDH/NF-0.2 catalyst was used as the cathode and anode of an electrolytic cell,the catalyst achieved a current density of 10 mA.cm-2 at an applied voltage of 1.643 V.This study provides a novel approach for designing excellent bifunctional electrocatalysts con-taining nonprecious metals.

Bifunctional electrocatalysts2D multilevel structureOverall water splittingMo-doped Ni-Fe LDH

Bao-Jie Zhang、Bin Chang、Shi-Peng Qiu、Gang Zhao、Xiao Wang、Xi-Jin Xu、Lan Mu、Wen-Bo Liao、Xiao-Jing Dong

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School of Physics and Technology,University of Jinan,Jinan 250000,China

KAUST Catalysis Center(KCC),King Abdullah University of Science and Technology(KAUST),Thuwal 23955-6900,Kingdom of Saudi Arabia

School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China

School of Physics and Physical Engineering,Qufu Normal University,Qufu 273100,China

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国家自然科学基金国家自然科学基金国家自然科学基金Youth Innovation Group Plan of Shandong ProvincePlan for the Introduction and Cultivation of Young Innovative Talent in the Colleges and Universities of Shandong ProvinceGuiding Fund of Zaozhuang Industrial Technology Research Institute of University of Jinan

6200118951802177U22A201402022KJ095

2024

10.1007/s12598-023-02587-4

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(6)
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