Sulfonated polybenzimidazole/amine functionalized titanium dioxide (sPBI/AFT) composite electrolyte membranes for high temperature proton exchange membrane fuel cells usage

Muhammad A. Imran; Tiantian Li; Xuemei Wu; Xiaoming Yan; Abdul-Sammed Khan; Gaohong He

doi:10.1016/j.cjche.2020.05.016

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Sulfonated polybenzimidazole/amine functionalized titanium dioxide (sPBI/AFT) composite electrolyte membranes for high temperature proton exchange membrane fuel cells usage

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Sulfonated polybenzimidazole/amine functionalized titanium dioxide (sPBI/AFT) composite electrolyte membranes for high temperature proton exchange membrane fuel cells usage
- Chinese Journal of Chemical Engineering Vol. 28, Issue 9, Pages: 2425-2437(2020)
- Affiliations：
  
  1. State Key Laboratory of Fine Chemicals, Research and Development Center of Membrane Science and Technology, School of Chemical Engineering, Dalian University of Technology,Dalian,China,116024
  2. School of Physics, Dalian University of Technology,Dalian,China,116024
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.05.016
  CLC：
- Published：2020
- Accepted：
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Muhammad A. Imran, Tiantian Li, Xuemei Wu, Xiaoming Yan, Abdul-Sammed Khan, Gaohong He. Sulfonated polybenzimidazole/amine functionalized titanium dioxide (sPBI/AFT) composite electrolyte membranes for high temperature proton exchange membrane fuel cells usage[J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2425-2437.
DOI：

Muhammad A. Imran, Tiantian Li, Xuemei Wu, Xiaoming Yan, Abdul-Sammed Khan, Gaohong He. Sulfonated polybenzimidazole/amine functionalized titanium dioxide (sPBI/AFT) composite electrolyte membranes for high temperature proton exchange membrane fuel cells usage[J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2425-2437. DOI： 10.1016/j.cjche.2020.05.016.

摘要

Abstract

The novel sulfonated polybenzimidazole (sPBI)/amine functionalized titanium dioxide (AFT) composite membrane is devised and studied for its capability of the application of high temperature proton exchange membrane fuel cells (HT-PEMFCs)

unlike the prior low temperature AFT endeavors. The high temperature compatibility was actualized because of the filling of free volumes in the rigid aromatic matrix of the composite with AFT nanoparticles which inhibited segmental motions of the chains and improved its thermal stability. Besides

amine functionalization of TiO

enhanced their dispersion character in the sPBI matrix and shortened the interparticle separation gap which finally improved the proton transfer after establishing interconnected pathways and breeding more phosphoric acid (PA) doping. In addition

the appeared assembled clusters of AFT flourished a superior mechanical stability. Thus

the optimized sPBI/AFT (10 wt%) showed 65.3 MPa tensile strength; 0.084 S·cm

-1

proton conductivity (at 160 °C; in anhydrous conditions)

28.6% water uptake and PA doping level of 23

mol per sPBI repeat unit. The maximum power density peak for sPBI/AFT-10 met the figure of 0.42 W·cm

-2

at 160 °C (in dry conditions) under atmospheric pressure with 1.5 and 2.5 stoichiometric flow rates of H

/air. These results affirmed the probable fitting of sPBI/AFT composite for HT-PEMFC applications.

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