Scalable solid-template reduction for designed reduced graphene oxide architectures

Herein, we report a solid-state reduction

process (in contrast to solution-based approach) by using an

environmentally friendly reductant, such as vitamin C

(denoted VC), to be directly employed to solid-state graphene

oxide (GO) templates to give the highly active rGO

architecture with a sheet resistance of as low as 10 Ω sq−1.

In addition, predesigned rGO patterns/tracks with tunable

resistivity can be directly “written” on a preprepared solid GO

film via the inkjet-printing technique using VC/H2O as the

printing-ink. This advanced reduction process allows foreign

active materials to be preincorporated into the GO matrix to

form quality active composite architectures.