Nickel confined in 2D earth-abundant oxide layers for highly efficient and durable oxygen evolution catalysts

Pu, Yayun1,2; Lawrence, Matthew J.1; Celorrio, Veronica3; Wang, Qi4; Gu, Meng4; Sun, Zongzhao2; Jacome, Leonardo Agudo5; Russell, Andrea E.6; Huang, Limin2; Rodriguez, Paramaconi1

2020-07-14

10.1039/d0ta04031b

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

Low cost, high-efficiency catalysts towards water splitting are urgently required to fulfil the increasing demand for energy. In this work, low-loading (<20 wt%) Ni-confined in layered metal oxide anode catalysts (birnessite and lepidocrocite titanate) have been synthesized by facile ion exchange methodology and subjected to systematic electrochemical studies. It was found that Ni-intercalated on K-rich birnessite (Ni-KMO) presents an onset overpotential (eta(onset)) as low as 100 mV and overpotential at 10 mA cm(-2)(eta(10)) of 206 mV in pH = 14 electrolyte. By combining electrochemical methods and X-ray absorption and emission spectroscopies (XAS and XES), we demonstrate Ni sites are the active sites for OER catalysis and that the Mn(3+)sites facilitate Ni intercalation during the ion-exchange process, but display no observable contribution towards OER activity. The effect of the pH and the nature of the supporting electrolyte on the electrochemical performance was also evaluated.

SCI ; EI

英语

通讯

Southern University of Science and Technology (SUSTech) start fund through Shenzhen Peacock Talent program, Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N532] ; Guangdong Provincial Key Laboratory of Materials for Electric Power[2018B030322001] ; Shenzhen Clean Energy Research Institute[CERI-KY-2019-003]

Chemistry ; Energy & Fuels ; Materials Science

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

WOS:000546391600042

ROYAL SOC CHEMISTRY

20203108983510

Electrolytes ; Emission spectroscopy ; Metals ; Catalysts ; Oxygen ; X ray absorption

Electric Batteries and Fuel Cells:702 ; Electromagnetic Waves:711 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804

Web of Science

1.Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England
2.Southern Univ Sci & Technol, Dept Chem, 1088 Xueyuan Blvd, Shenzhen 518055, Guangdong, Peoples R China
3.Diamond Light Source Ltd, Diamond House,Harwell Campus, Didcot OX11 0DE, Oxon, England
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, 1088 Xueyuan Blvd, Shenzhen 518055, Guangdong, Peoples R China
5.Bundesanstalt Mat Forsch & Prufung BAM, Dept Mat Engn, Unter Den Eichen 87, D-12205 Berlin, Germany
6.Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England

Pu, Yayun,Lawrence, Matthew J.,Celorrio, Veronica,et al. Nickel confined in 2D earth-abundant oxide layers for highly efficient and durable oxygen evolution catalysts[J]. Journal of Materials Chemistry A,2020,8(26):13340-13350.

Pu, Yayun.,Lawrence, Matthew J..,Celorrio, Veronica.,Wang, Qi.,Gu, Meng.,...&Rodriguez, Paramaconi.(2020).Nickel confined in 2D earth-abundant oxide layers for highly efficient and durable oxygen evolution catalysts.Journal of Materials Chemistry A,8(26),13340-13350.

Pu, Yayun,et al."Nickel confined in 2D earth-abundant oxide layers for highly efficient and durable oxygen evolution catalysts".Journal of Materials Chemistry A 8.26(2020):13340-13350.