Graphene/N-doped amorphous carbon sheet for hydrogen evolution

Dear Editors, Hydrogen is a promising candidate for use in the future as an alternative to traditional petroleum fuels. Electrochemi- cal water splitting is an efficient way to produce hydrogen. It is well known that platinum and other precious metals have high HER efficiency. The high cost and scarcity of these precious metals, however, limit their applicability to large-scale hydrogen production. Therefore, considerable attention has been focused recently on exploitation of non-precious catalysts.