公开(公告)号：US20230295371A1

公开(公告)日：2023-09-21

申请号：US17700087

申请日：2022-03-21

申请人： Advent Technologies Holdings, Inc.

发明人： Christos L. Chochos ,  George Paloumbis ,  Cynthia Lemay Olson

IPC分类号： C08G61/10 ,  B29C41/00 ,  B29C41/02

CPC分类号： C08G61/10 ,  B29C41/003 ,  B29C41/02 ,  B29K2065/00 ,  B29L2031/755

摘要： The invention relates to the fabrication of membranes based on polyphenylene-based polymers—and more particularly, for example, quaternary ammonium functionalized polyphenylene-based polymers—utilizing a class of green sustainable organic solvents, such as cyclic ketones, by casting or coating for use in high temperature polymer electrolyte membrane fuel cells or water electrolyzers.

公开(公告)号：US20230302441A1

公开(公告)日：2023-09-28

申请号：US17704711

申请日：2022-03-25

申请人： Advent Technologies Holdings, Inc.

发明人： Christos L. Chochos ,  Panagiotis Bexis ,  Konstantinos Gournas ,  George Paloumbis ,  Vasilis Gregoriou

IPC分类号： B01J41/14 ,  C08F238/00 ,  C07C49/697

CPC分类号： B01J41/14 ,  C08F238/00 ,  C07C49/697 ,  C07C2601/10

摘要： The invention relates to the development of quaterphenylene polymer derivatives with synthetic methodologies towards controllable and integer degree of functionalization on the quaterphenylene polymer backbone with specific number of side phenyl groups and monovalent hydrocarbon groups terminated by a functional group consisting of quaternary ammonium groups resulting to precise IEC, water uptake and anionic conductivity without batch-to-batch variations and compatible with industrial manufacturing processes for use as membranes or ionomers in low temperature and high temperature polymer electrolyte membrane fuel cells.

公开(公告)号：US11453749B2

公开(公告)日：2022-09-27

申请号：US16285185

申请日：2019-02-25

申请人： Advent Technologies Holdings, Inc.

发明人： Emory Sayre De Castro ,  Christos L. Chochos ,  Nora Gourdoupi ,  Vasilis G. Gregoriou ,  George Paloumbis

IPC分类号： C08G65/40 ,  G01N27/404 ,  C08L81/06 ,  C08G75/23

摘要： Aromatic polymers exhibiting thermal stability and conductivity upon imbibement into an acid are disclosed for electrochemical gas sensor applications. Membrane electrode assemblies for electrochemical gas sensors are also provided, comprising a sensing electrode, a counter electrode, and a polymer membrane comprising the polymers of the present invention, disposed between the sensing electrode and the counter electrode.