	US 11,955,638 B2
	Sheet-shaped member
Seiichiro Tabata, Tokyo (JP); Shinichiro Yamada, Tokyo (JP); Masayoshi Kanno, Tokyo (JP); Tsutomu Noguchi, Tokyo (JP); and Takeshi Horie, Tokyo (JP)
Assigned to Sony Corporation, Tokyo (JP)
Filed by Sony Corporation, Tokyo (JP)
Filed on Dec. 29, 2022, as Appl. No. 18/091,176.
Application 18/091,176 is a continuation of application No. 16/900,268, filed on Jun. 12, 2020, granted, now 11,545,665.
Application 16/900,268 is a continuation of application No. 12/308,161, granted, now 10,714,750, issued on Jul. 14, 2020, previously published as PCT/JP2008/056752, filed on Apr. 4, 2008.
Claims priority of application No. 2007-098421 (JP), filed on Apr. 4, 2007; and application No. 2008-059052 (JP), filed on Mar. 10, 2008.
Prior Publication US 2023/0147545 A1, May 11, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/587 (2010.01); B01J 20/20 (2006.01); B01J 20/28 (2006.01); C01B 32/00 (2017.01); C01B 32/30 (2017.01); C01B 32/318 (2017.01); C01B 32/336 (2017.01); H01G 11/24 (2013.01); H01G 11/34 (2013.01); H01M 4/02 (2006.01); H01M 4/583 (2010.01); H01M 10/0525 (2010.01)

CPC H01M 4/587 (2013.01) [B01J 20/20 (2013.01); B01J 20/28033 (2013.01); B01J 20/28059 (2013.01); B01J 20/28061 (2013.01); B01J 20/28071 (2013.01); C01B 32/00 (2017.08); C01B 32/30 (2017.08); C01B 32/318 (2017.08); C01B 32/336 (2017.08); H01G 11/24 (2013.01); H01G 11/34 (2013.01); H01M 4/583 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 10/0525 (2013.01); H01M 2220/30 (2013.01); Y02E 60/13 (2013.01)]

8 Claims

1. A sheet-shaped member comprising:

a porous carbon material including a material obtained from carbonization of a raw material including rice husk, the raw material having a silicon content of at least 5 wt %, the raw material is heat treated before carbonization, and the raw material is treated by an alkali treatment after carbonization to reduce the silicon content, the porous carbon material having a specific surface area of at least 10 m²/g as measured by the nitrogen BET method, a pore volume of at least 0.1 cm³/g as measured by the BJH method and MP method, and an R value of 1.5 or greater,

wherein the porous carbon material includes mesopores having pore sizes from 2 nm to 50 nm and obtained from the alkali treatment of the raw material after carbonization, the porous carbon material further includes macropores and micropores,

the R value is expressed as R=B/A, the A referring to an intensity at an intersection between the baseline of a diffraction peak of the (002) plane as obtained based on powdery X-ray diffractometry of the porous carbon material and a perpendicular line downwardly drawn from the diffraction peak of the (002) plane, and the B referring to the intensity of the diffraction peak of the (002) plane.