摘要
Direct reduction of graphene oxide usually leads to the agglomeration of the as-generated graphene sheets,thus suppressing the surface exposed for energy storage.Herein,graphene oxide was reduced by a one-pot hydrothermal process in the presence of an electrochemically active phosphotungstic acid to produce three-dimensional porous phosphotungstic acid/reduced graphene oxide composites.Phosphotungstic acid molecules were found to be uniformly anchored on the surface of reduced graphene oxide sheets through the electrostatic interaction to prevent the reduced graphene oxide sheets from restacking.
基金
We thank the financial support by the National Natural Science Foundation of China(51673061,51273057,and 21503282)
the Program for New Century Excellent Talents in University(NCET-12-0709).
