This is work done by a joint Chinese and American team. They have glued together graphene nanoplates to make a composite that does not need carbon fibre. The graphic shows the steps they had to go through to make this work.
The resulting composite conducted electricity and was fairly strong with a tensile strength of 0.9Gpa. This is about 100 times less strong than perfect single crystal graphene.
An interesting development. This could open up a new market opportunity for graphene oxide nanoplates in composite materials. This composite does not need carbon fibre. It just uses graphene oxide nanoplates. The key to success here will be to source a reliable consistent supply of graphene oxide.