Mo modulation effect on the hydrogen binding energy of hexagonal-close-packed Ru for hydrogen evolution

Zhang, Zhen1,2; Li, Ping4; Wang, Qi2; Feng, Qi1,2; Tao, Youkun3; Xu, Jiaoyan2; Jiang, Cheng2; Lu, Xiner2; Fan, Jiantao2; Gu, Meng2; Li, Hui2; Wang, Haijiang3

2019-02-14

10.1039/c8ta11251g

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

As a cheaper Pt-group metal, ruthenium (Ru) is a highly competitive alternative to Pt for commercialization towards the hydrogen evolution reaction (HER). Herein, we report the modulation effect on the Gibbs free energy (Delta G(H)*) of hexagonal-close-packed (hcp) Ru resulting from heteroatom Mo doping. In particular, for the first time the hcp MoRu3 crystal structure is theoretically predicted with pretty high intrinsic HER activity. Meanwhile, the Mo hetero-dopant could act as a new active site with Pt-like Delta G(H)*. Motivated by the prediction, we report a novel metal organic framework (MOF)-assisted synthetic strategy to prepare a Mo-doped hcp Ru electrocatalyst. Accordingly, the hcp MoRu3 catalyst exhibits an ultralow overpotential of 30.5 mV at 10 mA cm(-2), ensuring excellent Pt-like intrinsic HER activity. More importantly, the excellent electrochemical performance measured with a proton exchange membrane (PEM) electrolyzer further highlights the promising potential of the hcp MoRu3 catalyst for hydrogen production.

SCI ; EI

英语

通讯

Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N500]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000457893400039

ROYAL SOC CHEMISTRY

20190606486475

Binary alloys ; Binding energy ; Crystal structure ; Crystalline materials ; Electrocatalysts ; Free energy ; Gibbs free energy ; Hydrogen production ; Modulation ; Organometallics ; Proton exchange membrane fuel cells (PEMFC) ; Ruthenium ; Vanadium alloys

Gas Fuels:522 ; Molybdenum and Alloys:543.3 ; Vanadium and Alloys:543.6 ; Precious Metals:547.1 ; Thermodynamics:641.1 ; Fuel Cells:702.2 ; Physical Chemistry:801.4 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Compounds:804.1 ; Crystalline Solids:933.1 ; Crystal Lattice:933.1.1

Web of Science

1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Hydrogen Energy, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.Soochow Univ, Dept Phys, Suzhou 215006, Peoples R China

Zhang, Zhen,Li, Ping,Wang, Qi,et al. Mo modulation effect on the hydrogen binding energy of hexagonal-close-packed Ru for hydrogen evolution[J]. Journal of Materials Chemistry A,2019,7(6):2780-2786.

Zhang, Zhen.,Li, Ping.,Wang, Qi.,Feng, Qi.,Tao, Youkun.,...&Wang, Haijiang.(2019).Mo modulation effect on the hydrogen binding energy of hexagonal-close-packed Ru for hydrogen evolution.Journal of Materials Chemistry A,7(6),2780-2786.

Zhang, Zhen,et al."Mo modulation effect on the hydrogen binding energy of hexagonal-close-packed Ru for hydrogen evolution".Journal of Materials Chemistry A 7.6(2019):2780-2786.