Isolated ni atoms dispersed on ru nanosheets: high-performance electrocatalysts toward hydrogen oxidation reaction

Mao，Junjie1; He，Chun Ting3; Pei，Jiajing2; Liu，Yan1; Li，Jun1; Chen，Wenxing2; He，Dongsheng4; Wang，Dingsheng2; Li，Yadong2

2020-05-13

10.1021/acs.nanolett.0c00364

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

Designing low-cost, high-efficiency, platinum-free electrocatalysts for the hydrogen oxidation reaction (HOR) in an alkaline electrolyte is of great importance for the development of anion exchange membrane fuel cells. Herein, we report a novel HOR catalyst, RuNi1, in which Ni is atomically dispersed on the Ru nanocrystals. To note, the as-prepared RuNi1 catalyst exhibits excellent catalytic activity and stability for HOR in alkaline media, which is superior to those of Ru-Ni bimetallic nanocrystals, pristine Ru, and commercial Pt/C catalysts. Density functional theory (DFT) calculations suggest that isolation of Ni atoms on Ru nanocrystals not only optimizes the hydrogen-binding energy but also decreases the free energy of water formation, thus leading to excellent electrocatalytic activity of RuNi1 catalyst. The results show that engineering a catalyst at an atomic level is highly effective for rational design of electrocatalysts with high performance.

Atomically dispersed Electrocatalysis Hydrogen oxidation reaction Ru nanocrystals

SCI ; EI

英语

NI论文

其他

National Key R&D Program of China[2018YFA0702003] ; National Natural Science Foundation of China[21971002][21890383][21671117][21871159] ; Natural Science Foundation of Anhui province[1908085QB45]

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

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

WOS:000535255300066

AMER CHEMICAL SOC

20202308787052

Binding energy ; Electrolysis ; Oxidation ; Binary alloys ; Density functional theory ; Electrolytes ; Ruthenium compounds ; Catalyst activity ; Ion exchange membranes ; Design for testability ; Free energy ; Ruthenium ; Alkaline fuel cells ; Atoms ; Nickel ; Electrocatalysts ; Nanocrystals ; Ruthenium alloys

Precious Metals:547.1 ; Nickel:548.1 ; Thermodynamics:641.1 ; Electric Batteries and Fuel Cells:702 ; Fuel Cells:702.2 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Electrochemistry:801.4.1 ; Chemical Plants and Equipment:802.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1

MATERIALS SCIENCE

2-s2.0-85084695686

Scopus

1.Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes,Key Laboratory of Functional Molecular Solids,Ministry of Education,Anhui Key Laboratory of Molecule-Based Materials,Wuhu,241002,China
2.Department of Chemistry,Tsinghua University,Beijing,100084,China
3.Key Laboratory of Functional Small Organic Molecule,Ministry of Education,Jiangxi Normal University,Nanchang,330022,China
4.Materials Characterization and Preparation Center (MCPC),South University of Science and Technology of China,Shenzhen, Guangdong,518055,China

Mao，Junjie,He，Chun Ting,Pei，Jiajing,et al. Isolated ni atoms dispersed on ru nanosheets: high-performance electrocatalysts toward hydrogen oxidation reaction[J]. NANO LETTERS,2020,20(5):3442-3448.

Mao，Junjie.,He，Chun Ting.,Pei，Jiajing.,Liu，Yan.,Li，Jun.,...&Li，Yadong.(2020).Isolated ni atoms dispersed on ru nanosheets: high-performance electrocatalysts toward hydrogen oxidation reaction.NANO LETTERS,20(5),3442-3448.

Mao，Junjie,et al."Isolated ni atoms dispersed on ru nanosheets: high-performance electrocatalysts toward hydrogen oxidation reaction".NANO LETTERS 20.5(2020):3442-3448.