公开(公告)号：US11777109B2

公开(公告)日：2023-10-03

申请号：US17866794

申请日：2022-07-18

Applicant: Mitsubishi Chemical Corporation

Inventor： Kyu Ota ,  Hiroto Tatsuno ,  Kazuhiro Sumioka

IPC: H01M4/96 ,  H01M4/04 ,  H01M4/86 ,  H01M4/88 ,  H01M8/18 ,  H01M4/02

CPC classification number: H01M4/96 ,  H01M4/0438 ,  H01M4/8605 ,  H01M4/8875 ,  H01M4/8882 ,  H01M4/8892 ,  H01M8/18 ,  H01M2004/021

Abstract: A hydrophilic porous carbon electrode which has excellent hydrophilicity, which has high reaction activity when used for a battery, and with which excellent battery characteristics is able to be obtained is provided. A hydrophilic porous carbon electrode is a sheet-form hydrophilic porous carbon electrode in which a carbon fiber is bonded using a resin carbide and has a contact angles θA of water on both surfaces in a thickness direction being 0 to 15° and a contact angle θB of water in a middle portion in the thickness direction being 0 to 15°. The hydrophilic porous carbon electrode is obtained by forming the carbon fiber and a binder fiber into a sheet, impregnating the sheet into a thermosetting resin, subjecting it to heat press processing, and then subjecting it to carbonization at 400 to 3000° C. in an inert atmosphere. The hydrophilic porous carbon electrode is transported and is subjected to a heat treatment while an oxidizing gas flows at 400 to 800° C. in a direction perpendicular to a direction in which the hydrophilic porous carbon electrode is transported to be subjected to hydrophilization.

公开(公告)号：US09716278B2

公开(公告)日：2017-07-25

申请号：US14382723

申请日：2013-03-29

Applicant: Mitsubishi Chemical Corporation

Inventor： Hiroto Tatsuno

IPC: H01M4/88 ,  H01M4/86 ,  H01M4/96 ,  C04B35/622 ,  C04B35/634 ,  C04B35/645 ,  C04B35/83 ,  H01M8/0234 ,  H01M8/0243 ,  C04B35/626 ,  H01M8/1007 ,  H01M4/90 ,  H01M8/0239

CPC classification number: H01M4/8652 ,  C04B35/62218 ,  C04B35/6269 ,  C04B35/63444 ,  C04B35/63476 ,  C04B35/6455 ,  C04B35/83 ,  C04B2235/424 ,  C04B2235/425 ,  C04B2235/5256 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2235/5272 ,  C04B2235/528 ,  C04B2235/5292 ,  C04B2235/604 ,  C04B2235/616 ,  H01M4/8605 ,  H01M4/8807 ,  H01M4/90 ,  H01M4/9083 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0243 ,  H01M8/1007 ,  Y02P70/56

Abstract: The present invention relates to a method for manufacturing a porous electrode base material including the following steps [1] to [3]: [1] a step for dispersing short carbon fibers (A) to form a sheet-form product; [2] a step for adding, to the sheet-form product, at least one phenolic resin (c) selected from a group consisting of a water soluble phenolic resin and a water dispersible phenolic resin along with carbon powder (d) to form a precursor sheet; and [3] a step for carbonizing the precursor sheet at the temperature of 1000° C. or higher, after the step [2].

公开(公告)号：US10727497B2

公开(公告)日：2020-07-28

申请号：US15522414

申请日：2015-11-04

Applicant: Mitsubishi Chemical Corporation

Inventor： Hiroto Tatsuno ,  Makoto Nakamura

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/1018 ,  B32B5/02 ,  H01M8/0234 ,  H01M8/0245 ,  H01M8/0239

Abstract: Disclosed herein is a porous electrode substrate in which carbon fibers are dispersed in the structure thereof have a fiber diameter of 3-15 micron and a fiber length of 2-30 mm, and are bound to one another by carbonized resin such that, when a pore distribution in the porous electrode is determined with a mercury intrusion porosimeter, such that a pore distribution curve is plotted on a graph having a common logarithmic scale on the horizontal axis, and a 1-100 micron pore diameter range of the pore distribution curve includes 80 or more measurement points at equal intervals along the common logarithmic scale, the pore distribution has a skewness S of −2.0

公开(公告)号：US11437629B2

公开(公告)日：2022-09-06

申请号：US16991337

申请日：2020-08-12

Applicant: Mitsubishi Chemical Corporation

Inventor： Kyu Ota ,  Hiroto Tatsuno ,  Kazuhiro Sumioka

IPC: H01M4/96 ,  H01M4/04 ,  H01M4/86 ,  H01M4/88 ,  H01M8/18 ,  H01M4/02

Abstract: A hydrophilic porous carbon electrode which has excellent hydrophilicity, which has high reaction activity when used for a battery, and with which excellent battery characteristics is able to be obtained is provided. A hydrophilic porous carbon electrode is a sheet-form hydrophilic porous carbon electrode in which a carbon fiber is bonded using a resin carbide and has a contact angles θA of water on both surfaces in a thickness direction being 0 to 15° and a contact angle θB of water in a middle portion in the thickness direction being 0 to 15°. The hydrophilic porous carbon electrode is obtained by forming the carbon fiber and a binder fiber into a sheet, impregnating the sheet into a thermosetting resin, subjecting it to heat press processing, and then subjecting it to carbonization at 400 to 3000° C. in an inert atmosphere. The hydrophilic porous carbon electrode is transported and is subjected to a heat treatment while an oxidizing gas flows at 400 to 800° C. in a direction perpendicular to a direction in which the hydrophilic porous carbon electrode is transported to be subjected to hydrophilization.