US 11,702,339 B2
Polyarylonitrile system for preparing multifunctional carbon flowers and other superstructures
Zhenan Bao, Stanford, CA (US); and Shucheng Chen, Stanford, CA (US)
Assigned to The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
Appl. No. 17/257,727
Filed by The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
PCT Filed Jul. 15, 2019, PCT No. PCT/US2019/041838
§ 371(c)(1), (2) Date Jan. 4, 2021,
PCT Pub. No. WO2020/018438, PCT Pub. Date Jan. 23, 2020.
Claims priority of provisional application 62/701,051, filed on Jul. 20, 2018.
Prior Publication US 2021/0284537 A1, Sep. 16, 2021
Int. Cl. C01B 32/15 (2017.01); B82Y 40/00 (2011.01)
CPC C01B 32/15 (2017.08) [B82Y 40/00 (2013.01); C01P 2002/01 (2013.01); C01P 2002/85 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2006/12 (2013.01); C01P 2006/16 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of fabricating a polyacrylonitrile (PACN) and deriving a nanostructured superstructure shape, comprising:
a) synthesizing in a one-pot free radical polymerization synthesis a PACN structure using acrylonitrile (ACN) as a monomer, azobisisobutyronitrile (AIBN) as an initiator and an organic solvent; and
b) converting the PACN structure into a nanostructured superstructure shape by stabilizing and carbonizing the PACN structure, wherein the stabilizing step comprises an oxidative reaction step in air at a temperature in a range of 180° C. to 300° C. with a ramping rate of 0.1° C./min to 5° C./min in a range of 2 to 12 hours and the carbonizing step comprises pyrolyzing the stabilized PACN structure at a temperature ranging from 600° C. to 1500° C. in an inert gas atmosphere or vacuum condition.