Recent progress of precious-metal-free electrocatalysts for efficient water oxidation in acidic media

• 来源期刊: 能源化学
• 年，卷（期）: 2020,（12）
• 页码范围: 113-133
• 页数: 21页
• 语种: 英文

摘要

The realization of efficient oxygen evolution reaction(OER)is critical to the development of multiple sus-tainable energy conversion and storage technologies,especially hydrogen production via water electroly-sis.To achieve the massive application of hydrogen energy and mass-scale hydrogen production from wa-ter splitting drives the pursuit of competent precious-metal-free electrocatalysts in acidic media,where the hydrogen evolution reaction(HER)is more facilitated.However,the development of high-efficient and acid-stable OER electrocatalysts,which are robust to function stably at high oxidation potentials in the acidic electrolyte,remains a great challenge.This article contributes a focused,perceptive review of the up-to-date approaches toward this emerging research field.The OER reaction mechanism and fundamen-tal requirements for oxygen evolution electrocatalysts in acid are introduced.Then the progress and new discoveries of precious-metal-free active materials and design concepts with regard to the improvement of the intrinsic OER activity are discussed.Finally,the existing scientific challenges and the outlooks for future research directions to the fabrication of emerging,earth-abundant OER electrocatalysts in acid are pointed out.