US 12,272,826 B2
Porous carbon structure, manufacturing method therefor, positive electrode material using same, and battery using same
Eiki Yasukawa, Tsukuba (JP); Takashi Kameda, Tsukuba (JP); Shoichi Matsuda, Tsukuba (JP); Shoji Yamaguchi, Tsukuba (JP); Shin Kimura, Tsukuba (JP); Kimihiko Ito, Tsukuba (JP); and Yoshimi Kubo, Tsukuba (JP)
Assigned to National Institute for Materials Science, Tsukuba (JP)
Appl. No. 17/611,984
Filed by National Institute for Materials Science, Tsukuba (JP)
PCT Filed May 21, 2020, PCT No. PCT/JP2020/020143
§ 371(c)(1), (2) Date Nov. 17, 2021,
PCT Pub. No. WO2020/235638, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 2019-096585 (JP), filed on May 23, 2019; and application No. 2020-034769 (JP), filed on Mar. 2, 2020.
Prior Publication US 2022/0255085 A1, Aug. 11, 2022
Int. Cl. H01M 4/86 (2006.01); H01M 4/88 (2006.01); H01M 4/96 (2006.01); H01M 12/06 (2006.01)
CPC H01M 4/8605 (2013.01) [H01M 4/8882 (2013.01); H01M 4/96 (2013.01); H01M 12/06 (2013.01); H01M 2004/8689 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A porous carbon structure for an air battery positive electrode, the porous carbon structure comprising pores and a skeleton containing carbon, and satisfying all of conditions (a) to (e) shown as follows:
(a) a t-plot external specific surface area is in a range of 900 m2/g or more and 1,600 m2/g or less;
(b) a pore volume of the pores having a diameter of 1 nm or more and 200 nm or less is in a range of 2.2 cm3/g or more and 7.0 cm3/g or less;
(c) a pore volume of the pores having a diameter of 1 nm or more and 1,000 nm or less is in a range of 4.0 cm3/g or more and 10.0 cm3/g or less;
(d) an overall porosity is in a range of 92% or more and 99% or less; and
(e) a pore volume of the pores having a diameter of 200 nm or more and 10,000 nm or less is in a range of 2.3 cm3/g or more and 8.0 cm3/g or less.