Amorphous/2H-MoS_(2) nanoflowers with P doping and S vacancies to achieve efficient pH-universal hydrogen evolution at high current density  

作　　者：Yue Shi Dan Zhang Hongfu Miao Xueke Wu Zuochao Wang Tianrong Zhan Jianping Lai Lei Wang 

机构地区：[1]Key Laboratory of Eco-chemical Engineering,Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science,TaishanScholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection,College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《Science China Chemistry》2022年第9期1829-1837,共9页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(51772162,22001143 and 52072197);the Youth Innovation and Technology Foundation of Shandong Higher Education Institutions,China(2019KJC004);the Outstanding Youth Foundation of Shandong Province,China(ZR2019JQ14);the Taishan Scholar Young Talent Program(tsqn201909114,tsqn201909123);the Natural Science Foundation of Shandong Province(ZR2020YQ34);the Major Scientific and Technological Innovation Project(2019JZZY020405);the Major Basic Research Program of Natural Science Foundation of Shandong Province(ZR2020ZD09)。

摘　　要：Molybdenum disulfide(MoS_(2))has become a competitive candidate for efficient and economical hydrogen evolution reaction(HER).Compared with 1T-MoS_(2),2H-MoS_(2) possesses exceptional thermodynamic stability but still suffers from low active site density,poor conductivity,and weak hydrogen bonding in the wide pH range.Herein,2H-MoS_(2) nanoflowers with phosphorus doping,sulfur vacancies and crystalline-amorphous heterojunction were synthesized via phosphorus-assisted rapid calcination method.Benefiting from the cooperative interaction of multiple strategies,the prepared 2H-MoS_(2) nanoflowers firstly achieve efficient pH-universal HER at high current densities.Experimental results show that in alkaline,acidic,and neutral media,MoS_(2)-P2 requires only 332,302,and 417 mV to drive the current density of 500 mA cm^(−2) and obtains 932,1100,and 472 mA cm^(−2) at the potential of−0.4 V vs.RHE,respectively.Moreover,MoS_(2)-P2 shows excellent stability of low and high current density in the full pH range.

关 键 词：MoS_(2)nanoflowers defects DOPANTS heterojunction hydrogen evolution reaction 

分 类 号：TQ116.2[化学工程—无机化工] TQ426