Closest Packing Polymorphism Interfaced Metastable Transition Metal for Efficient Hydrogen Evolution

Tan, Xinyue1; Geng, Shize1,2; Ji, Yujin2; Shao, Qi1,3; Zhu, Ting1; Wang, Pengtang1; Li, Youyong2; Huang, Xiaoqing1

2020-08-31

10.1002/adma.202002857

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

Metastable materials are promising because of their catalytic properties, high-energy structure, and unique electronic environment. However, the unstable nature inherited from the metastability hinders further performance improvement and practical applications of these materials. Herein, this limitation is successfully addressed by constructing an in situ polymorphism interface (inf) between the metastable hexagonal-close-packed (hcp) phase and its stable counterpart (face-centered cubic, fcc) in cobalt-nickel (CoNi) alloy. Calculations reveal that the interfacial synergism derived from the hcp and fcc phases lowers the formation energy and enhances stability. Consequently, the optimized CoNi-inf exhibits an exceptionally low potential of 72 mV at 10 mA cm(-2)and a Tafel slope of 57 mV dec(-1)for the hydrogen evolution reaction (HER) in 1.0mKOH. Furthermore, it is superior to most state-of-the-art non-noble-metal-based HER catalysts. No noticeable activity decay or structural changes are observed even over 14 h of catalysis. The computational simulation further rationalizes that the interface of CoNi-inf with a suitable d-band center provides uniform sites for hydrogen adsorption, leading to a distinguished HER catalytic activity. This work, therefore, presents a new route for designing metastable catalysts for potential energy conversion.

closest packing electrocatalysts hydrogen evolution reaction polymorphism interface transition metal alloys

SCI ; EI

英语

NI期刊

通讯

Ministry of Science and Technology of China[2016YFA0204100][2017YFA0208200] ; National Natural Science Foundation of China[21571135][21905188] ; Young Thousand Talented Program, Jiangsu Province Natural Science Fund for Distinguished Young Scholars[BK20170003] ; China Postdoctoral Science Foundation[2019M651937] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; project of scientific and technologic infrastructure of Suzhou[SZS201708]

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

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

WOS:000564009700001

WILEY-V C H VERLAG GMBH

20203509120959

Nickel alloys ; Potassium hydroxide ; Precious metals ; Catalyst activity ; Binary alloys ; Gas adsorption ; Polymorphism ; Potential energy

Precious Metals:547.1 ; Nickel Alloys:548.2 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China
2.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Jiangsu, Peoples R China
3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Peoples R China

Tan, Xinyue,Geng, Shize,Ji, Yujin,et al. Closest Packing Polymorphism Interfaced Metastable Transition Metal for Efficient Hydrogen Evolution[J]. ADVANCED MATERIALS,2020,32(40).

Tan, Xinyue.,Geng, Shize.,Ji, Yujin.,Shao, Qi.,Zhu, Ting.,...&Huang, Xiaoqing.(2020).Closest Packing Polymorphism Interfaced Metastable Transition Metal for Efficient Hydrogen Evolution.ADVANCED MATERIALS,32(40).

Tan, Xinyue,et al."Closest Packing Polymorphism Interfaced Metastable Transition Metal for Efficient Hydrogen Evolution".ADVANCED MATERIALS 32.40(2020).