公开(公告)号：US09868804B1

公开(公告)日：2018-01-16

申请号：US15219783

申请日：2016-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy J. Fuller ,  Frank D. Coms ,  Cristin L. Keary

IPC: B29C67/00 ,  H01M8/10 ,  C08F228/02 ,  D01F6/32 ,  H01M8/0239

CPC classification number: C08F228/02 ,  D01D5/00 ,  D01D5/28 ,  D01F6/32 ,  D01F6/48 ,  D01F11/06 ,  H01M4/8668 ,  H01M8/0239 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02P70/56

Abstract: A method for making a device with a fibrous sheet includes a step of combining a fiber-forming resin with a carrier resin to form a resinous mixture. The fiber forming resin has a fluorinated backbone with a pendent CF2CF2—X group where X is a SO3H or SO2F. The carrier resin is a soluble polyamide. The resinous mixture is extruded to form an extruded resinous mixture. The extruded resinous mixture has fiber strands of the fiber-forming resin within the carrier resin. The extruded resinous mixture is contacted with water to separate the fiber strands of the fiber-forming resin from the carrier resin. Fiber forming strands are optionally cross-linked with ammonia and then are hydrolyzed to form ionomers.

公开(公告)号：US11038189B2

公开(公告)日：2021-06-15

申请号：US16410584

申请日：2019-05-13

Applicant: GM Global Technology Operations LLC

Inventor： Ruichun Jiang ,  Frank D. Coms ,  Timothy J. Fuller

IPC: H01M8/126 ,  H01M8/1004 ,  H01M8/1213 ,  H01M8/1253

Abstract: A membrane electrode assembly component for a fuel cell includes a generally planar gas-permeable body having opposed first and second faces defining in-plane and through-plane directions, a side face extending about an outer perimeter of the body and adjoining each of the first and second faces, and an active region bounded by the first and second faces and an active region perimeter defined generally within the outer perimeter. The active region includes a distribution of cerium-zirconium oxide nanofibers dispersed across at least one of the in-plane and through-plane directions, wherein the cerium-zirconium oxide nanofibers have a molecular formula of CexZryO4.