Graphene/Au composite paper as flexible current collector to improve electrochemical performances of CFx cathode

We report the application of free-standing, lightweight, and flexible graphene/Au composite paper (GACP), as a current collector for CFx cathode. At a high discharge current density of 4000 mA g(-1) (5C), the capacity of the CF1.0 loaded on GACP current collector is 653 mAh g(-1), while CF1.0 loaded on Al foil failed at 800 mA g(-1) (1C). Using GACP, both excellent rate capability and specific capacity can be achieved simultaneously, owing to its undulant surface structure and flexible contact with the CFx composite active layer. Our results provide a new strategy to design both high power and energy densities CFx cathode. Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved.