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He, Pei, Jianyun Cao, Hui Ding, Chongguang Liu. ACS applied materials & interfaces 11, no. 35 (2019): 32225-32234.
Graphene, a two-dimensional allotrope of carbon, is a promising conductive ink material due to its high intrinsic conductivity, good mechanical properties, and scalable production capability.
Here, we present a highly conductive ink based on graphene nanosheets (GNPs) with a pristine average sheet size of approximately 19.3 μm and less than 1% polymer binder weight. The printed graphene patterns on flexible substrates show a high conductivity of 8.81 × 104 S m-1. Furthermore, we have demonstrated that the printed highly conductive graphene patterns can be directly used as current collectors to replace the metal current collectors traditionally used in electrochemical energy storage devices. The use of printed highly conductive graphene patterns as current collectors may provide a low-cost, flexible, and one-stop option for organic and aqueous electrolyte systems.
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