An electrochemical route to holey graphene nanosheets for charge storage applications

Holey graphene nanosheets are potentially useful in several relevant technological applications, including electrochemical energy storage and molecular separation. Access to this material is mostly accomplished by resorting standard oxides obtained common routes (e.g., the Hummers method). However, such a type of highly oxidized graphenes may not be best option as precursor holey on account their chemical/structural heterogeneity harsh synthesis conditions. Here, we report use derived an exfoliation/oxidation strategy alternative graphene. Compared oxide with same extent oxidation, electrochemically exhibited larger aromatic domains, which provided structural basis for its higher electrical conductivity, well smaller denser regions, associated chemical homogeneity lability oxygen-containing functional groups. Through selective etching latter feature was exploited afford having more uniform holes. When used electrode charge storage, outperformed oxide-based counterpart terms capacity density. Overall, boasting distinct characteristics, means can regarded prospective advantageous many graphene-based materials whose preparation has traditionally relied processing oxides. • Electrochemically-derived proper Anodic offers advantages over oxide. Electrodes based new exhibit improved