公开(公告)号：US20240039024A1

公开(公告)日：2024-02-01

申请号：US18256936

申请日：2021-09-22

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Jinkai HAO ,  Hongjie ZHANG ,  Zhigang SHAO

IPC: H01M8/1088 ,  H01M8/1039 ,  H01M8/1067

CPC classification number: H01M8/1088 ,  H01M8/1039 ,  H01M8/1067 ,  H01M2008/1095

Abstract: A preparation process of composite membrane for fuel cells uses an expanded polytetrafluoroethylene microporous base membrane as a skeleton. The base membrane is subjected to an impregnation treatment of mixed solutions having different concentrations from low to high. Specifically, the treatment tank I is provide with a mixed solution of a 0.1 wt. %-1 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, the treatment tank II is provided with a mixed solution of a 2 wt. %-6 wt. % perfluorosulfonic acid resin solution, a water-retaining agent and a free radical quencher, and the treatment tank III is provided with a mixed solution of a 7 wt. %-20 wt. % perfluorosulfonic acid resin solution and a sulfonated polyetheretherketone solution. The resulting proton exchange composite membrane does not generate pore residues and avoids hydrogen permeation when in use.

公开(公告)号：US20240101869A1

公开(公告)日：2024-03-28

申请号：US18256492

申请日：2021-09-22

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Jinkai HAO ,  Hongjie ZHANG ,  Zhigang SHAO

IPC: C09J7/25 ,  C09J7/38 ,  C09J11/08 ,  C09J183/06 ,  H01M4/88

CPC classification number: C09J7/255 ,  C09J7/38 ,  C09J11/08 ,  C09J183/06 ,  H01M4/881 ,  H01M4/8825 ,  C09J2203/33 ,  C09J2467/006 ,  C09J2483/00

Abstract: A protective film sequentially includes a release film, a low-viscosity silica gel layer, a high-viscosity silica gel layer and a substrate from top to bottom. A high-viscosity organosilicon adhesive, a hydroxyl-terminated polydimethylsiloxane, a curing agent, an additive and a solvent are coated on a polyester film. A low-viscosity organosilicon adhesive, the hydroxyl-terminated polydimethylsiloxane, the curing agent, the additive and the solvent are mixed and costed on the polyester film complex, which is pressed with the release film to obtain a silica gel protective film for fuel cells. A proton exchange membrane is coated with a catalyst to form a first catalyst layer, the protective film is adhered to the surface of the first catalyst layer, the second side of the proton exchange membrane is coated, and the silica gel protective film is peeled off after the coating is finished to obtain a CCM for a fuel cell.

公开(公告)号：US20240039004A1

公开(公告)日：2024-02-01

申请号：US18256938

申请日：2021-08-17

Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES

Inventor： Hongjie ZHANG ,  Jinkai HAO ,  Zhigang SHAO

IPC: H01M4/88 ,  B65H23/18 ,  B05C5/02

CPC classification number: H01M4/8828 ,  H01M4/881 ,  H01M4/8882 ,  B65H23/1806 ,  B05C5/0245

Abstract: A roll-to-roll continuous coater for CCM preparation, and a coiled material connection method are provided. The coater has a coiled material connection mechanism that includes an upper rack (2) and a lower rack (3). A vacuum suction plate I (2-3) provided with a driving device for achieving displacement and a vacuum suction plate II (3-1) provided with a solid glue spraying device (3-3) are respectively disposed on the bottom of the upper rack (2) and the top of the lower rack (3). An optical fiber sensor I (2-4) and an optical fiber sensor II (3-2) are respectively disposed in the vacuum suction plate I (2-3) and the vacuum suction plate II (3-1). A tension detection device (4) is disposed between the lower rack (3) and a driving roller assembly (1).