Se-Doping Activates FeOOH for Cost-Effective and Efficient Electrochemical Water Oxidation
Beijing National Laboratory for Molecular Sciences · Institute of Chemistry · +3 more institutions
Abstract
Ni or Co is commonly required in efficient electrocatalysts for oxygen evolution reaction (OER). Although Fe is much more abundant and cheaper, full-Fe or Fe-rich catalysts suffer from insufficient activity. Herein, we discover that Se-doping can drastically promote OER on FeOOH and develop a facile on-site electrochemical activation strategy for achieving such a Se-doped FeOOH electrode via an FeSe precatalyst. Theoretical analysis and systematic experiments prove that Se-doping enables FeOOH as an efficient and low-cost OER electrocatalyst. By optimizing the electrode structure, an industrial-level OER current output of 500 mA cm–2 is secured at a low overpotential of 348 mV. The application of such an…
Citation impact
- FWCI
- 19.70
- Percentile
- 100%
- References
- 53
Authors
7- SNShuai Niu
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, University of Chinese Academy of Sciences
- WJWenjie Jiang
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, University of Chinese Academy of Sciences
- ZWZengxi Wei
Hunan University
- TTTang Tang
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, University of Chinese Academy of Sciences
- JMJianmin Ma
Hunan University, Zhengzhou University
Topics & keywords
- Overpotential
- Oxygen evolution
- Chemistry
- Water splitting
- Electrocatalyst
- Electrochemistry
- Doping
- Catalysis
- Industry, innovation and infrastructure