Regular conduction channels decorated with delicately designed functional group hold promise to accelerate hydroxide conduction. In this study, GO was modified with imidazolium-containing polymer brush, followed by vacuum filtration to prepare a laminar membrane. The interconnected parallel channels provide an unparalleled conduction pathway for hydroxide migration in which the in plane hydroxide conductivity reaches about 68.5 mS cm(-1) for Im@GOM at 90 degrees C under 98% RH, outperforming that of polymer based membranes with similar IEC values.