| (19) |
 |
|
(11) |
EP 2 878 709 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
|
Note: Bibliography reflects the latest situation |
| (15) |
Correction information: |
|
Corrected version no 1 (W1 A1) |
| (48) |
Corrigendum issued on: |
|
02.09.2015 Bulletin 2015/36 |
| (43) |
Date of publication: |
|
03.06.2015 Bulletin 2015/23 |
| (22) |
Date of filing: 28.11.2013 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL
NO PL PT RO RS SE SI SK SM TR |
|
Designated Extension States: |
|
BA ME |
| (71) |
Applicants: |
|
- BASF SE
67056 Ludwigshafen (DE)
- Max-Planck-Gesellschaft zur Förderung
der Wissenschaften e.V.
80539 München (DE)
|
|
| (72) |
Inventors: |
|
- Venkataraman, Shyam Sundar
67061 Ludwigshafen (DE)
- Kurkina, Tetiana
67433 Neustadt (DE)
- Feng, Xinliang
55122 Mainz (DE)
- Parvez, Khaled
68161 Mannheim (DE)
- Müllen, Klaus
50939 Köln (DE)
|
| (74) |
Representative: Haggenmüller, Christian |
|
Maiwald Patentanwalts GmbH
Elisenhof
Elisenstraße 3
80335 München
80335 München (DE) |
|
| |
|
| (54) |
Preparation of two dimensional carbon materials by electrochemical exfoliation |
(57) The present invention relates to a process for preparing graphene by electrochemical
exfoliation, which comprises:
- providing a first electrode E1 and a second electrode E2, wherein at least the first
electrode E1 comprises a carbon starting material having a layered structure;
- bringing at least the first electrode E1 in contact with a liquid electrolyte,
wherein the liquid electrolyte comprises
- an ammonium cation, and
- an inorganic sulphur-containing anion,
- applying an electric potential between the first electrode E1 and the second electrode
E2 so as to exfoliate graphene from the carbon starting material.