文献类型：期刊文献

英文题名：Facile Room-Temperature Synthesis of Porous Sulfur-Doped NiFe-LDH Nanosheet Arrays for Efficient Oxygen Evolution

作者：Chen, Yufei[1];Li, Huaizi[1];Ye, Xuanchen[1];Han, Xinya[1];Sang, Tianqi[1];Wang, Yu[1];Zhou, Min[2,3];Wang, Zhenwei[1]

机构：[1]Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China;[2]East China Univ Sci & Technol, Ctr Computat Chem, State Key Lab Green Chem Engn & Ind Catalysis, R China, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China

年份：2025

卷号：13

期号：41

起止页码：17324

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20254319358194);WOS:【SCI-EXPANDED(收录号:WOS:001587953400001)】；

基金：This work was supported by the Shanghai Institute of Technology's 2025 Faculty Professional Development Program.

语种：英文

外文关键词：NiFe-LDH; sulfur-doped; porous nanosheetarrays; OER; water electrolysis

摘要：The multielectron nature of the oxygen evolution reaction (OER) imposes severe kinetic constraints on water splitting efficiency. NiFe-layered double hydroxides (NiFe-LDHs) are promising OER catalysts but suffer from few active sites and low conductivity. We developed self-supported porous nanosheet arrays of sulfur-doped NiFe-layered double hydroxide (S-NiFe-LDH/NF) via a facile room-temperature electrodeposition-corrosion method. Sulfur doping creates porous structures and oxygen vacancies that expose active sites and enhance conductivity while tuning the electronic configuration of Ni/Fe active centers to reduce the activation barrier of the *O -> *OOH step. Additionally, sulfur doping accelerates the gamma-NiOOH formation kinetics. In 1.0 M KOH, S-NiFe-LDH/NF requires only 159 and 235 mV to drive 10 and 100 mAcm-2, respectively. The corresponding Tafel slope is 26.3 mVdec-1, surpassing those of both NiFe-LDH/NF and commercial RuO2. Coupled with a Ni3S2/Ni/NF cathode exhibiting a 61 mV HER overpotential at 10 mAcm-2, the integrated electrolyzer delivers 10 and 100 mAcm-2 at 1.45 and 1.61 V, respectively, and sustains 1000 mAcm-2 at 1.94 V for 200 h. This study presents a scalable and economical approach for designing efficient electrocatalysts for industrial-scale water splitting.