Design of active nickel single-atom decorated MoS2 as a pH-universal catalyst for hydrogen evolution reaction

Wang, Qi1; Zhao, Zhi Liang1; Dong, Sha2; He, Dongsheng1; Lawrence, Matthew J.3; Han, Shaobo1,2; Cai, Chao1,2; Xiang, Shuhuai1; Rodriguez, Paramaconi3; Xiang, Bin4; Wang, Zhiguo2; Liang, Yongye1; Gu, Meng1

2018-11

10.1016/j.nanoen.2018.09.003

Nano Energy   影响因子和分区

2211-2855

2211-3282

MoS2 has been considered as a potential alternative to Pt-based catalysts in the hydrogen evolution reaction (HER). However, the presence of the inactive in-plane domains limits their intrinsic electrocatalytic activity of the catalyst. Here, we demonstrate a new approach for activating these inactive sites and therefore dramatically enhancing the activity. We discover that decorating single Ni atom on MoS2 can increase the HER activity in both alkaline and acidic conditions. Experimental and theoretical results indicate that single Ni atom modifiers are inclined to single dispersion in the S-edge sites and H-basal sites of MoS2, resulting in a favorable change in the adsorption behavior of H atoms on their neighboring S atoms and subsequently the HER activity. Consequently, the single-Ni-atom decorated MoS2 (Ni-SA-MoS2) achieved cathodic current density of 10 mA cm(-2) at over-potentials of 98 mV and 110 mV in 1M KOH and 0.5M H2SO4, respectively. The dispersion of the Ni single atoms in the Ni-SA-MoS2 is unaffected upon 2000 cycles in both acidic and alkaline conditions. This single atom decorating approach presents a facile and promising pathway for designing active electrocatalysts for energy conversion and storage.

Ni Single atom MoS2 Hydrogen evolution reaction Active sites

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[51602143] ; National Natural Science Foundation of China[11474047]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000448994600051

ELSEVIER SCIENCE BV

20183705808067

Alkalinity ; Atoms ; Catalyst activity ; Dispersions ; Electrocatalysts ; Energy conversion ; Hydrogen ; Layered semiconductors ; Molybdenum compounds ; Platinum compounds ; Potassium hydroxide

Energy Conversion Issues:525.5 ; Nickel:548.1 ; Chemistry, General:801.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Atomic and Molecular Physics:931.3 ; Materials Science:951

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Sichuan, Peoples R China
3.Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England
4.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

Wang, Qi,Zhao, Zhi Liang,Dong, Sha,et al. Design of active nickel single-atom decorated MoS2 as a pH-universal catalyst for hydrogen evolution reaction[J]. Nano Energy,2018,53:458-467.

Wang, Qi.,Zhao, Zhi Liang.,Dong, Sha.,He, Dongsheng.,Lawrence, Matthew J..,...&Gu, Meng.(2018).Design of active nickel single-atom decorated MoS2 as a pH-universal catalyst for hydrogen evolution reaction.Nano Energy,53,458-467.

Wang, Qi,et al."Design of active nickel single-atom decorated MoS2 as a pH-universal catalyst for hydrogen evolution reaction".Nano Energy 53(2018):458-467.