US 11,891,539 B2
Cellular graphene films
Richard Barry Kaner, Pacific Palisades, CA (US); and Yuanlong Shao, Suzhou (CN)
Assigned to The Regents of the University of California, Oakland, CA (US)
Filed by The Regents of the University of California, Oakland, CA (US)
Filed on Jul. 29, 2021, as Appl. No. 17/388,082.
Application 17/388,082 is a continuation of application No. 16/428,409, filed on May 31, 2019, granted, now 11,118,073.
Application 16/428,409 is a continuation of application No. 15/382,871, filed on Dec. 19, 2016, granted, now 10,655,020.
Claims priority of provisional application 62/428,608, filed on Dec. 1, 2016.
Claims priority of provisional application 62/271,115, filed on Dec. 22, 2015.
Prior Publication US 2022/0049115 A1, Feb. 17, 2022
Int. Cl. C09D 5/24 (2006.01); H01G 11/60 (2013.01); H01G 11/86 (2013.01); H01G 11/26 (2013.01); C01B 32/23 (2017.01); C01B 32/192 (2017.01); C01B 32/198 (2017.01); H01G 11/24 (2013.01); H01G 11/36 (2013.01); H01G 11/64 (2013.01); H01G 11/32 (2013.01); H01G 11/52 (2013.01); H01G 11/00 (2013.01)
CPC C09D 5/24 (2013.01) [C01B 32/192 (2017.08); C01B 32/198 (2017.08); C01B 32/23 (2017.08); H01G 11/00 (2013.01); H01G 11/24 (2013.01); H01G 11/26 (2013.01); H01G 11/32 (2013.01); H01G 11/36 (2013.01); H01G 11/60 (2013.01); H01G 11/64 (2013.01); C01P 2006/10 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01G 11/52 (2013.01); Y02E 60/13 (2013.01); Y02T 10/70 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of fabricating a graphene oxide film, comprising:
(a) suspending a graphene oxide in a first solvent to form a graphene oxide suspension;
(b) dispersing the graphene oxide suspension in a second solvent to form a graphene oxide dispersion;
(c) reducing the graphene oxide dispersion;
(d) filtering the graphene oxide dispersion through a membrane to form a graphene oxide film on the membrane; and
(e) freeze-casting the graphene oxide film on the membrane, wherein the graphene oxide film has a tensile strength of about 9 MPa to about 36 MPa.