Interface-engineered MoS_(2)/CoS/NF bifunctional catalysts for highly-efficient water electrolysis  

作　　者：Wenxia Chen Xingwang Zhu Rui Wang Wei Wei Meng Liu Shuai Dong Kostya Ken Ostrikov Shuang-Quan Zang 

机构地区：[1]School of Chemistry and Chemical Engineering,Henan Key Laboratory of Biomolecular Recognition and Sensing,Henan D&A Engineering Center of Advanced Battery Materials,Shangqiu Normal University,Shangqiu 476000,Henan,China [2]Henan Key Laboratory of Crystalline Molecular Functional Materials,Henan International Joint Laboratory of Tumor Theranostical Cluster Materials,Green Catalysis Center and College of Chemistry,Zhengzhou University,Zhengzhou 450001,Henan,China [3]College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225009,Jiangsu,China [4]School of Chemistry and Physics and Centre for Materials Science,Queensland University of Technology(QUT),Brisbane,QLD 4000,Australia

出　　处：《Journal of Energy Chemistry》2022年第12期16-25,I0002,共11页能源化学（英文版）

基　　金：the financial support from the National Natural Science Foundation of China(22005273,21825106 and 21671175);the Natural Science Foundation of Henan Province(222300420258);the Scientific and Technological Research Project in Henan Province(222102240065 and 212102210647);the Key scientific research projects of colleges and universities in Henan Province(No.22A530006);the Natural Science Foundation of Jiangsu Province(BK20220598);the Program for Science&Technology Innovative Research Team in University of Henan Province(20IRTSTHN007)。

摘　　要：The utilization of non-noble metal catalysts with robust and highly efficient electrocatalytic activity for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)are extremely important for the large-scale implementation of renewable energy devices.Integration of bifunctional electrocatalysts on both anode and cathode electrodes remains a significant challenge.Herein,we report on a novel and facile strategy to construct the ordered and aligned MoS_(2)nanosheet-encapsulated metal–organic frameworks(MOFs)derived hollow CoS polyhedron,in-situ grown on a nickel foam(NF).The starfish-like MoS_(2)/CoS/NF heterojunctions were formed due to the ordered growth of the material caused by NF substrate.The optimized 2-MoS_(2)/CoS/NF heterojunction exhibits robust bifunctional electrocatalytic activity with a low overpotential of 67 and 207 m V toward the HER and OER at 10 mA cm^(-2),and the long-term stability,which exceeds most of the reported bifunctional electrocatalysts.Such high electrocatalytic performance arises due to the synergistic effect between the MoS_(2)and CoS phases across the interface,the abundant active sites,as well as the hierarchical pore framework,which collectively enhance the mass and electron transfer during the reactions.The work provides a promising approach to fabricating bifunctional catalysts with custom-designed heterojunctions and remarkable performance for applications in electrochemical energy devices and related areas.

关 键 词：HETEROJUNCTION Bifunctional catalysts HER OER 

分 类 号：TQ116.21[化学工程—无机化工] TQ426