Flexible free-standing graphene paper with interconnected porous structure for energy storage
By Shu, Kewei; Wang, Caiyun; Li, Sha; Zhao, Chen; Yang, Yang; Liu, Huakun & Wallace, Gordon
Published in J. Mater. Chem. A
The Royal Society of Chemistry
2015
Abstract
A novel porous graphene paper is prepared via freeze drying a wet graphene oxide gel, followed by thermal and chemical reduction. The macroscopic structure of the formed graphene paper can be tuned by the water content in the gel precursor. With 92% water content, an interconnected macroporous network can be formed. This porous graphene (PG) paper exhibits excellent electrochemical properties. It can deliver a high discharge capacity of 420 mA h g-1 at a current density of 2000 mA g-1 when used as binder-free lithi
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