Patent ID: 11939703
Assignee: ROBERT BOSCH GMBH
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D  H | IPC D

Claim 0:
1. A process for producing graphene fibers, the process comprising the steps:
a. providing single-layer or multilayer graphene flakes or graphene oxide flakes based on graphene or on graphene oxide,
b. applying a transition metal or a transition metal oxide to the graphene flakes or graphene oxide flakes by a deposition process,
c. spinning a graphene fiber or graphene oxide fiber by injection of a spinning solution comprising in dispersed form the graphene flakes or graphene oxide flakes obtained from step b),
d. treating the graphene fiber or the graphene oxide fiber in a process atmosphere containing a reducing agent at a defined treatment temperature, wherein a graphene oxide fiber, if present, is reduced to a graphene fiber, wherein the graphene fiber or graphene oxide fiber is treated such that the transition metal oxide in step d) is only partially reduced or such that the transition metal in a step following step d) is partially oxidized.