Journal
ENERGY & ENVIRONMENTAL MATERIALS
Volume 5, Issue 2, Pages 470-485Publisher
WILEY
DOI: 10.1002/eem2.12198
Keywords
borides; electrocatalysts; hydrogen evolution reaction; oxygen evolution reaction
Categories
Funding
- National Natural Science Foundation of China [52025013, 51622102]
- Ministry of Science and Technology of China MOST [2018YFB1502101]
- 111 Project [B12015]
- Fundamental Research Funds for the Central Universities
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This article summarizes the excellent performance and optimization strategies of transition metal borides (TMBs) in hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), pointing out the direction for enhancing the performance.
Electrochemical water splitting is a feasible method for producing environmental benignity energy of hydrogen, while high price and low availability on the earth of noble electrocatalysts constrain their global-scale application. Transition metal borides (TMBs) have displayed unique metalloid characteristic and outstanding performance for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in the last few decades. Herein, recent developments of the TMBs for HER and OER are summarized. Initially, the impact factors and relevant evaluation of electrocatalytic performance are described, that is, overpotential, Tafel slope and exchange current density, stability, faradaic efficiency, turnover frequency, mass and specific activities. Moreover, the optimization strategies of borides are emphasized, which principally include coupling with effective substrates, elemental doping, phase modification, interfacial engineering, and morphology control. Finally, in order to reach the goal of application, the remaining challenges and perspectives are given to point out a direction for enhancing the performance of borides.
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