Abstract
AbstractThe unique chemical and physical properties of graphene and its derivatives (graphene oxide, heteroatom‐doped graphene, and functionalized graphene) have stimulated tremendous efforts and made significant progress in fuel cell applications. This review focuses on the latest advances in the use of graphene‐based materials in electrodes, electrolytes, and bipolar plates for fuel cells. The understanding of structure‐activity relationships of metal‐free heteroatom‐doped graphene and graphene‐supported catalysts was highlighted. The performances and advantages of graphene‐based materials in membranes and bipolar plates were summarized. We also outlined the challenges and perspectives in using graphene‐based materials for fuel cell applications.
Highlights
Fuel cells are a series of energy conversion devices that produce electricity as long as fuels are supplied
Since the chemical energy of fuels is directly converted to electricity, the system efficiency of fuel cells is significantly higher than the combustion engine, along with the low emission of pollutants
According to the types of electrolytes, the fuels are classified as phosphoric acid fuel cell (PAFC), polymer electrolyte membrane fuel cell (PEMFC), alkaline fuel cell (AFC), molten carbonate fuel cell (MCFC), and solid-oxide fuel cell (SOFC).[1]
Summary
Fuel cells are a series of energy conversion devices that produce electricity as long as fuels are supplied. Graphene-based materials are ideal electrocatalyst supports, increasing the number of active sites and facilitating the transport of electrons for both fuel oxidation and oxygen reduction reaction (ORR).[2,3] Metal-free graphene
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