US 12,404,176 B2
Scalable synthesis of perimorphic carbons
Matthew Bishop, Novato, CA (US); David Brill, Novato, CA (US); Christopher Carstens, Woodside, CA (US); Abhay Thomas, Mill Valley, CA (US); and Andrew Westle, Novato, CA (US)
Assigned to DICKINSON CORPORATION, Novato, CA (US)
Filed by DICKINSON CORPORATION, Novato, CA (US)
Filed on Mar. 8, 2023, as Appl. No. 18/119,014.
Application 18/119,014 is a continuation of application No. PCT/US2021/049195, filed on Sep. 7, 2021.
Claims priority of provisional application 63/075,918, filed on Sep. 9, 2020.
Prior Publication US 2024/0034631 A1, Feb. 1, 2024
Int. Cl. C01B 32/186 (2017.01)
CPC C01B 32/186 (2017.08) [C01P 2002/01 (2013.01); C01P 2002/30 (2013.01); C01P 2002/82 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing carbon perimorphic frameworks by:
I. From a first aqueous stock solution, deriving template precursor particles and an aqueous mother liquor, the deriving comprising a solventless precipitation, where the first aqueous stock solution and aqueous mother liquor each contain aqueous ion species comprising oxyanions and metal cations, the metal cations comprising at least one of a Group I metal and a Group II metal; and
II. Decomposing the template precursor particles to evolve template particles, the template particles comprising at least one of a metal carbonate and a metal oxide; and
III. On a templating surface of each of the template particles, at a temperature of at least 350° C., synthesizing a perimorphic wall comprising at least one graphenic carbon layer, to form a perimorphic composite particle, the perimorphic walls together characterized by a 532-nm Raman spectrum having an unfitted D peak position between 1300 cm−1 and 1332 cm−1; and
IV. Exposing the perimorphic composite particles to an aqueous acid to:
extract the template particles from the perimorphic walls; and
generate a second aqueous stock solution, the second aqueous stock solution comprising the aqueous mother liquor and containing the aqueous ion species; and
form carbon perimorphic frameworks, each carbon perimorphic framework comprising a perimorphic wall and an endocellular space.