公开(公告)号：US20240182638A1

公开(公告)日：2024-06-06

申请号：US18282291

申请日：2022-02-28

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kazuho MURAKAMI ,  Kazuma MATSUI ,  Tsuyoshi TANAKA ,  Daisuke IZUHARA

IPC: C08G65/40 ,  C08G61/10 ,  C25B13/08 ,  H01M8/10 ,  H01M8/1025 ,  H01M8/1039

CPC classification number: C08G65/405 ,  C08G61/10 ,  C08G65/4056 ,  C25B13/08 ,  H01M8/1025 ,  H01M8/1039 ,  C08G2261/126 ,  C08G2261/1428 ,  C08G2261/1452 ,  C08G2261/312 ,  C08G2261/41 ,  C08G2261/90 ,  H01M2008/1095

Abstract: A block copolymer containing one or more segments containing an ionic group (hereinafter referred to as an “ionic segment(s)”) and one or more segments containing no ionic group (hereinafter referred to as a “nonionic segment(s)”), wherein at least one of the ionic segment or the nonionic segment contains: constituent units composed of an aromatic hydrocarbon polymer (hereinafter referred to as a “constituent unit”); and a first linker that links the constituent units with each other. A block copolymer and a polymer electrolyte material produced using the block copolymer are made feasible, in which the block copolymer can achieve high proton conductivity under low-humidity conditions, excellent mechanical strength and chemical stability, and enhanced in-process capability.

公开(公告)号：US20240178424A1

公开(公告)日：2024-05-30

申请号：US18282274

申请日：2022-02-14

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kazuho MURAKAMI ,  Kazuma MATSUI ,  Tsuyoshi TANAKA ,  Daisuke IZUHARA

IPC: H01M8/1004 ,  C25B1/04 ,  H01M8/10 ,  H01M8/1023 ,  H01M8/1025

CPC classification number: H01M8/1004 ,  C25B1/04 ,  H01M8/1023 ,  H01M8/1025 ,  H01M2008/1095 ,  H01M2300/0082

Abstract: [Problem] Developed is a polymer electrolyte membrane having excellent proton conductivity even under low-humidity conditions, and having excellent mechanical strength and chemical stability.
[Solution] A polymer electrolyte membrane containing a block copolymer having one or more ionic segments and one or more nonionic segments, wherein the ion exchange capacity (meq/g) of the block copolymer is more than 2.0 and less than 3.1, wherein the polymer electrolyte membrane has a co-continuous phase-separation structure, wherein the average period size (nm) of the co-continuous phase-separation structure is less than 110 nm as observed by transmission electron microscopy, and wherein the average period size (nm) of the co-continuous phase-separation structure and the ion exchange capacity (meq/g) satisfy the relation of: average period size (nm)/ion exchange capacity (meq/g)≥21.

公开(公告)号：US20240182639A1

公开(公告)日：2024-06-06

申请号：US18280549

申请日：2022-03-17

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kazuho MURAKAMI ,  Kazuma MATSUI ,  Tsuyoshi TANAKA ,  Daisuke IZUHARA

IPC: C08G65/40 ,  C25B13/08 ,  H01M8/1025 ,  H01M8/10

CPC classification number: C08G65/4056 ,  C25B13/08 ,  H01M8/1025 ,  H01M2008/1095

Abstract: Provided is a polymer electrolyte article having high proton conductivity, mechanical strength, and chemical stability, wherein, for the average periodic distance in the phase-separated structure of the polymer electrolyte article observed by small-angle X-ray scattering, the average periodic distance in the atmosphere and the average periodic distance in water satisfy the following condition: (the average periodic distance in water)/(the average periodic distance in the atmosphere)≤2.20.

公开(公告)号：US20240170704A1

公开(公告)日：2024-05-23

申请号：US18282278

申请日：2022-02-28

Applicant: TORAY INDUSTRIES, INC.

Inventor： Kazuho MURAKAMI ,  Kazuma MATSUI ,  Tsuyoshi TANAKA ,  Daisuke IZUHARA

IPC: H01M8/1025 ,  C08G65/40 ,  C25B1/04 ,  C25B13/08 ,  H01M8/10

CPC classification number: H01M8/1025 ,  C08G65/4056 ,  C25B13/08 ,  C25B1/04 ,  H01M2008/1095

Abstract: A polymer electrolyte material composed of a block copolymer having a segment containing an ionic group (hereinafter referred to as an “ionic segment”) and a segment containing no ionic group (hereinafter referred to as a “nonionic segment”), wherein the polymer electrolyte material has a phase-separation structure, and satisfies at least one of the following condition 1 or condition 2: the saturated crystallinity of the polymer electrolyte material is 5% or more and 30% or less, as measured by wide-angle X-ray diffraction; and the ion exchange capacity (IEC) of the polymer electrolyte material is 1.8 meq/g or more and 3.0 meq/g or less, and the product of the IEC (meq/g) of the polymer electrolyte material and the heat of crystallization (J/g) of the polymer electrolyte material, as measured by differential scanning calorimetry analysis, is 35.0 or more and 47.0 or less. Provided is a polymer electrolyte material having good mechanical durability and excellent proton conductivity.