Volume 44, Issue 13 pp. 10354-10377
RESEARCH ARTICLE

Synthesis and characterization of poly 2-N-acrylamido-2-methyl−1-propane sulfonic acid functionalized graphene oxide embedded electrolyte membrane using DOE for PEMFC

Zaib un Nisa Mughal

Zaib un Nisa Mughal

National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan

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Huma Shaikh

Corresponding Author

Huma Shaikh

National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan

Correspondence

Huma Shaikh, National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.

Email: [email protected]

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Shahabuddin Memon

Shahabuddin Memon

National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan

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Rizwan Raza

Rizwan Raza

Department of Physics, COMSATS University Islamabad, Lahore, Pakistan

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Raza Shah

Raza Shah

Hussain Ebrahim Jamal Research Institute of Chemistry, International Center of Chemical and Biological Sciences, Karachi, Pakistan

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Muhammad Iqbal Bhanger

Muhammad Iqbal Bhanger

Hussain Ebrahim Jamal Research Institute of Chemistry, International Center of Chemical and Biological Sciences, Karachi, Pakistan

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First published: 11 July 2020
Citations: 3

Summary

A novel proton exchange membrane consisting of 2-N-acrylamido-2-methyl−1-propane sulfonic acid modified graphene oxide nanocomposite (PAMPS-mGO), carboxylated poly(vinyl chloride) (CPVC), and poly 2-N-acrylamido-2-methyl−1-propane sulfonic acid (PAMPS) has been successfully prepared by simple and scalable polymer blending methodology. Different compositions of PEM in terms of its constituting precursors such as PAMPS-mGO, CPVC, and PAMPS were optimized by Placket Burman Design and their ion exchange capacity (IEC), oxidative stability, water uptake percentage, mechanical stability, and proton conductivity were evaluated. The amounts of significant precursors were further optimized by Central Composite Design. The membrane with excellent performance in PEMFC was obtained when appropriate proportions of CPVC (10%), PAMPS (20%), and PAMPS-mGO (20%) were blended. Among all membrane with mentioned composition exhibited IEC 1.3 mmol/g, oxidative stability 97.2%, WU 40.8%, proton conductivity 151 S/cm, water content 17.43, current density 1537 mA/cm2 at 120°C, power density 566.5 mW/cm2 at 120°C, Young modulus 797 MPa, tensile strength 16.8 MPa, and elongation at break % of 2.7 MPa. These results are in good comparison with PEM based on Nafion. Thus, the CPVC, PAMPS, and PAMPS-mGO-based composite PEM is a good candidate for PEMFC at elevated temperature under anhydrous conditions.

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