公开(公告)号：US11939221B2

公开(公告)日：2024-03-26

申请号：US17055780

申请日：2019-04-10

Applicant: ArcelorMittal

Inventor： Thi Tan Vu ,  Abel Alvarez-Alvarez ,  Roberto Suarez Sanchez

IPC: C01B32/198

CPC classification number: C01B32/198

Abstract: A method for the manufacture of reduced graphene oxide from electrode graphite scrap including the provision of the graphite electrode scrap, the grinding of electrode graphite scrap to obtain ground graphite electrode, an oxidation step of the ground graphite electrode to obtain graphene oxide and the reduction into reduced graphene oxide.

公开(公告)号：US12049402B2

公开(公告)日：2024-07-30

申请号：US17055744

申请日：2019-04-10

Applicant: ArcelorMittal

Inventor： Thi Tan Vu ,  Abel Alvarez-Alvarez ,  Roberto Suarez Sanchez

IPC: C01B32/198 ,  C01B32/192 ,  C01B32/23

CPC classification number: C01B32/198 ,  C01B32/192 ,  C01B32/23 ,  C01P2004/61 ,  C01P2006/40

Abstract: A method for the manufacture of graphene oxide from electrode graphite scrap including the provision of electrode graphite scrap, the grinding of electrode graphite scrap to obtain ground graphite electrode and an oxidation step of the ground graphite electrode to obtain graphene oxide.

公开(公告)号：US12006222B2

公开(公告)日：2024-06-11

申请号：US17272779

申请日：2019-07-09

Applicant: ArcelorMittal

Inventor： Thi Tan Vu ,  Oscar Perez Vidal ,  Juan Jose Arribas ,  David Noriega Perez ,  Roberto Suarez Sanchez

IPC: C01B32/198 ,  B01J21/18

CPC classification number: C01B32/198 ,  B01J21/18

Abstract: A method for the manufacture of microwave-reduced graphene oxide (MW-rGO) including: the provision of graphene oxide (GO), the reduction of GO into reduced graphene oxide (rGO) using a reducing agent and the reduction of rGO into MW-rGO by microwaving under air atmosphere in presence of a catalyst.

公开(公告)号：US11535519B2

公开(公告)日：2022-12-27

申请号：US17051162

申请日：2019-04-05

Applicant: ArcelorMittal

Inventor： Thi Tan Vu ,  Oscar Perez Vidal ,  Roberto Suarez Sanchez

IPC: C01B32/196 ,  C01B32/19 ,  C01B32/182

Abstract: A method for the manufacture of pristine graphite from Kish graphite including three different steps A, B and C; the pristine obtained with among others a high amount of carbon atoms, i.e. a pristine graphene having a high purity; and the use of this pristine graphene.