Graphene composite plastic film as current collector for aluminum-graphite batteries

摘要

The use of rare metals as current collectors in aluminum-ion batteries is an urgent problem to be solved, so there are significant interests in the development of light-weight and high-efficiency materials as current collector. Herein, we report a polyvinyl-alcohol/graphene composite film as current collector in aluminum-ion batteries which synthesized by a simple solution method. The film containing 20 wt% graphene demonstrates high electrical conductivity up to 164S.cm(-1) with similar to 30 mu m in thicknesses and 2.8 mg cm(-2) in areal density. According to the electrochemical measurements, a reversible capacity of 89 mAh g(-1) is obtained at a rate of 1C in aluminum-graphite battery. (C) 2019 Published by Elsevier B.V.