公开(公告)号：US20250075020A1

公开(公告)日：2025-03-06

申请号：US18250654

申请日：2022-12-30

Applicant: Southern University of Science and Technology

Inventor： Jiexin ZOU ,  Min WANG ,  Haijiang WANG

IPC: C08F251/00 ,  B01D69/12 ,  C08J5/22

Abstract: A water-retaining material, including: a polymer chain segment provided by a hydrophilic polymer; and a proton carrier group grafted to the polymer chain segment. The polymer chain segment contains a hydrophilic group. A method for preparing a water-retaining material, includes: performing, in a reaction system including an activator and a catalyst, a grafting reaction between a hydrophilic polymer and a proton carrier compound to yield the water-retaining material. The water-retaining material contains a polymer chain segment containing a hydrophilic group. A water-retaining proton exchange membrane, includes a matrix. The matrix is doped with a water-retaining material; and the water-retaining material including the above water-retaining material.

公开(公告)号：US20240332578A1

公开(公告)日：2024-10-03

申请号：US18208058

申请日：2023-06-09

Applicant: SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jiexin ZOU ,  Min WANG ,  Haijiang WANG

IPC: H01M8/0656 ,  H01M4/86 ,  H01M4/88 ,  H01M8/04291 ,  H01M8/1004

CPC classification number: H01M8/0656 ,  H01M4/8605 ,  H01M4/8668 ,  H01M4/8807 ,  H01M4/8828 ,  H01M8/04291 ,  H01M8/1004

Abstract: The present application relates to the technical field of compressors, and in particular, to a composite gas diffusion layer, a preparation method thereof, a membrane electrode, and an electrochemical hydrogen compressor. The composite gas diffusion layer applied to an electrochemical hydrogen compressor includes: a base layer, a hydrophobic layer, and a water-absorbing layer, and the base layer, the hydrophobic layer, and the water-absorbing layer are sequentially stacked. The composite gas diffusion layer of the present application is designed for an inherent problem of the drying up of the anode during the operation of the electrochemical hydrogen compressor, and by arranging a layered structure for water absorption/hydrophobicity, the composite gas diffusion layer can improve the compression performance of the membrane electrode of the compressor and reduce the ohmic impedance of the membrane electrode.