Synthesis and Properties of Polysilsesquioxane Functionalized Poly(p-terphenyl-co-N-methyl-4-piperidine) Membrane for High Temperature Proton Exchange Membrane Fuel Cells
Lele Wang, Ting Wang, Qian Wang, Jin Wang, Jingshuai Yang
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引用次数: 0
Abstract
The development of high-performance, cost-effective high temperature polymer electrolyte membranes (HT-PEMs) is a great challenge for HT-PEM fuel cells. In this study, a new HT-PEM of polysilsesquioxane functionalized poly(p-terphenyl-co-N-methyl-4-piperidine) (PTP-CPTMS) is reported. Owing to the incorporation of the polysilsesquioxane network, the PTP-CPTMS membrane demonstrates an excellent phosphoric acid (PA) doping capacity and controlled swelling, compared to the benchmarks, that is, pristine PTP membrane and propyl group grafted PTP membrane (PTP-C3). As a result, the PTP-CPTMS/208%PA membrane exhibits a low volume swelling of 77%, a high conductivity of 0.070 S cm−1 at 180 °C and a satisfactory tensile strength of 4.9 MPa at room temperature. Based on the above membrane, the H2-O2 single cell is assembled and displays a steadily increased peak power density up to 220 °C, which is 769 mW cm−2 without the need for external humidification or backpressure. This work provides a kind of polysilsesquioxane functionalized HT-PEMs, which hold substantial potential for application in HT-PEM fuel cells.
期刊介绍:
Advanced Sustainable Systems, a part of the esteemed Advanced portfolio, serves as an interdisciplinary sustainability science journal. It focuses on impactful research in the advancement of sustainable, efficient, and less wasteful systems and technologies. Aligned with the UN's Sustainable Development Goals, the journal bridges knowledge gaps between fundamental research, implementation, and policy-making. Covering diverse topics such as climate change, food sustainability, environmental science, renewable energy, water, urban development, and socio-economic challenges, it contributes to the understanding and promotion of sustainable systems.