Mesoporous IrNiTa metal glass ribbon as a superior self-standing bifunctional catalyst for water electrolysis

Liu，Dongqing1; Song，Zhaoqi2; Cheng，Sirui1; Wang，Yuliang1; Saad，Ali2; Deng，Shengtao1; Shen，Jun1; Huang，Xiang3; Cai，Xingke2; Tsiakaras，Panagiotis4,5,6

2022-03-01

10.1016/j.cej.2021.134210

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Metallic glasses (MGs) only show single activity for water electrolysis and rarely show superior bifunctional activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In this work, IrNiTa (INT) MG ribbon with mesoporous surface is prepared by using a new synthesis procedure. It shows an overpotential of 48 mV for HER and 266 mV for OER to deliver a current density of 10 mA cm under alkaline conditions. By combining experimental characterizations and density functional theory (DFT) calculations, the outstanding catalytic performance is attributed to: i) the large surface area of the mesoporous structure, ii) the good charge transfer at the electrode/electrolyte interface, iii) the super hydrophilicity/aerophobicity of the MG ribbon and iv) the promotion of Ni and Ta atoms towards the intrinsic activity of Ir atoms in the INT (HER) and of surface IrO layer (OER). By using these self-standing INT MG ribbons as both the cathode and anode for overall water splitting, a stable cell voltage of 1.58 V is required to achieve a current density of 10 mA cm, which is 60 mV smaller than the value for Pt/C||IrO couple. This work demonstrates the potential use of MGs as integrated bifunctional electrodes for scalable water electrolysis.

Electrochemical water splitting Hydrogen evolution reaction Metallic glass Oxygen evolution reaction

SCI ; EI

英语

其他

China National Natural Science Foundation[52071217]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000774904700004

ELSEVIER SCIENCE SA

20215211383688

Charge transfer ; Density functional theory ; Electrodes ; Electrolysis ; Hydrogen ; Iridium compounds ; Mesoporous materials ; Metallic glass ; Oxygen ; Ternary alloys

Metallurgy and Metallography:531 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Glass:812.3 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

ENGINEERING

2-s2.0-85121620391

Scopus

1.College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen,518060,China
2.Institute for Advanced Study,Shenzhen University,Shenzhen,518060,China
3.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
4.Laboratory of Alternative Energy Conversion Systems,Department of Mechanical Engineering,School of Engineering,University of Thessaly,Pedion Areos,1 Sekeri Str.,38834,Greece
5.Laboratory of Materials and Devices for Clean Energy,Department of Technology of Electrochemical Processes,Ural Federal University,Yekaterinburg,19 Mira Str.,620002,Russian Federation
6.Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes,Institute of High Temperature Electrochemistry (RAS),Yekaterinburg,620990,Russian Federation

Liu，Dongqing,Song，Zhaoqi,Cheng，Sirui,et al. Mesoporous IrNiTa metal glass ribbon as a superior self-standing bifunctional catalyst for water electrolysis[J]. CHEMICAL ENGINEERING JOURNAL,2022,431.

Liu，Dongqing.,Song，Zhaoqi.,Cheng，Sirui.,Wang，Yuliang.,Saad，Ali.,...&Tsiakaras，Panagiotis.(2022).Mesoporous IrNiTa metal glass ribbon as a superior self-standing bifunctional catalyst for water electrolysis.CHEMICAL ENGINEERING JOURNAL,431.

Liu，Dongqing,et al."Mesoporous IrNiTa metal glass ribbon as a superior self-standing bifunctional catalyst for water electrolysis".CHEMICAL ENGINEERING JOURNAL 431(2022).