Intermolecular Acid–Base-Pairs Containing Poly (p-Terphenyl-co-Isatin Piperidinium) for High Temperature Proton Exchange Membrane Fuel Cells

Xiaofeng Hao, Zhen Li, Min Xiao, Zhiheng Huang, Dongmei Han, Sheng Huang, Wei Liu, Shuanjin Wang, Yuezhong Meng

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

How to optimize and regulate the distribution of phosphoric acid in matrix, and pursuing the improved electrochemical performance and service lifetime of high temperature proton exchange membrane (HT-PEMs) fuel cell are significant challenges. Herein, bifunctional poly (p-terphenyl-co-isatin piperidinium) copolymer with tethered phosphonic acid (t-PA) and intrinsic tertiary amine base groups are firstly prepared and investigated as HT-PEMs. The distinctive architecture of the copolymer provides a well-designed platform for rapid proton transport. Protons not only transports through the hydrogen bond network formed by the adsorbed free phosphoric acid (f-PA) anchored by the tertiary amine base groups, but also rely upon the proton channel constructed by the ionic cluster formed by the t-PA aggregation. Thorough the design of the structure, the bifunctional copolymers with lower PA uptake level (
Original languageEnglish (US)
JournalEnergy and Environmental Materials
DOIs
StatePublished - Jan 1 2023
Externally publishedYes

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