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The design of highly active and cost‐effective electrocatalysts for replacing precious‐metal catalysts is a key issue in the development of affordable renewable energy technologies in the future such as fuel cells, rechargeable batteries, and water‐splitting devices. Among various candidates, porous carbon materials have long been considered as an excellent catalyst component because of their diverse...
Graphene‐based hydrogels can be used as supercapacitor electrodes because of their excellent conductivity, their large surface area and their high compatibility with electrolytes. Nevertheless, the large aspect ratio of graphene sheets limits the kinetics of processes occurring in the electrode of supercapacitors. In this study, we have introduced in‐plane and out‐of‐plane pores into a graphene–nickel...
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