Graphene-based electrocatalysts for advanced energy conversion

Graphene-based nanocatalysts have appealed much interest as advanced electrocatalysts toward energy conversion reactions due to their outstanding electrocatalytic performance from the distinctive chemical composites and strong synergistic effects. Aiming to better understand the role of graphene played in enhancing the catalytic performance and offer guidance for fabricating more efficient graphene-based electrocatalysts, we herein summarize the remarkable achievements of graphene- based electrocatalysts for energy-conversion-related reactions. Started by discussing applications of graphene in the electrocatalytic reactions, we have manifested the crucial role of graphene played in promoting the catalytic performance. Subsequently, many representative graphene-based catalyst hybrids for electrocatalytic reactions are also overviewed, showing many effective strategies for the fabrication of more efficient graphene-related materials for the practical application. Finally, the perspective insights and challenging issues are also concluded to provide directions for the future development. Recent progress of graphene-based hybrids for electrocatalytic energy conversion reaction is systematically reviewed. • Graphene-based hybrids show great promise for the applications in electrocatalysis. • Graphene can enhance the conductivity and serve as the catalytically active site. • Some categories of graphene-based hybrids for electrocatalytic reactions are summarized. • The challenges and future direction of graphene-based hybrids for practical applications are discussed.