期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 14, 期 4, 页码 1722-1770出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ee03635h
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Hydrogen is increasingly seen as a key energy carrier in decarbonization efforts and strategies for clean energy economies. Improving the efficiency of electrocatalytic water splitting is crucial for reducing energy consumption and increasing conversion efficiency. The incorporation of multidimensional imperfections has shown promise in modulating electron distribution and speeding up electrocatalysis kinetics.
As a potential energy carrier, hydrogen has surged up the priority list as part of broader decarbonization efforts and strategies to build or acquire clean energy economies. Driven by renewable electricity, electrochemical water splitting (WS) promises an ideal long-term, low-carbon way to produce hydrogen, with the ability to tackle various critical energy challenges. To improve the efficiency of electrocatalytic water splitting, electrocatalysts with enhanced conductivity, more exposed active sites, and high intrinsic activity are crucial for decreasing the energy gap for the rate-determining step (RDS) and subsequently improving the conversion efficiency. The incorporation of multidimensional imperfections has been demonstrated to be efficient for modulating the electron distribution and speeding up the electrocatalysis kinetics during electrocatalytic processes and this is now attracting ever-increasing attention. Herein, in this review, we summarize recent progress relating to the regulation of electrical behavior and electron distributions for the optimization of electrocatalytic water-splitting performance via defect engineering. With an emphasis on the beneficial aspects of the hydrogen economy and an in-depth understanding of electron redistribution caused by defect effects, we offer a comprehensive summary of the progress made in the last three to five years. Finally, we also offer future perspectives on the challenges and opportunities relating to water-splitting electrocatalysts in this attractive field.
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