US 11,851,786 B2
Method for producing cellulose nanofiber carbon
Hironobu Minowa, Musashino (JP); Masaya Nohara, Musashino (JP); Mikayo Iwata, Musashino (JP); Shuhei Sakamoto, Musashino (JP); Hiroaki Taguchi, Musashino (JP); and Takeshi Komatsu, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/606,562
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed May 13, 2019, PCT No. PCT/JP2019/018885
§ 371(c)(1), (2) Date Oct. 26, 2021,
PCT Pub. No. WO2020/230227, PCT Pub. Date Nov. 19, 2020.
Prior Publication US 2022/0205143 A1, Jun. 30, 2022
Int. Cl. D01F 9/16 (2006.01); B01J 23/80 (2006.01); D01F 9/32 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
CPC D01F 9/16 (2013.01) [B01J 23/80 (2013.01); D01F 9/324 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of producing cellulose nanofiber carbon, comprising:
a freezing process in which a solution or gel containing cellulose nanofibers is frozen to obtain a frozen component;
a drying process in which the frozen component is dried in a vacuum to obtain a dry component; and
a carbonizing process in which the dry component is heated and carbonized in a non-combustible atmosphere, wherein, in the carbonizing process, the dry component is heated together with a reducing catalyst,
wherein the reducing catalyst is iron powder and zinc powder, and wherein, in the carbonizing process, the dry component is heated together with the iron powder and the zinc powder.