Synthesis of polymer/MWCNT nanocomposite catalyst supporting materials for high-temperature PEM fuel cells

• Published in: International journal of hydrogen energy 2021-01, Vol.46 (5), p.4339-4353
• Main Authors: Haque, M.Ahsanul, Sulong, A.Bakar, Shyuan, L.Kee, Majlan, E.Herianto, Husaini, T., Rosli, R.Emilia
• Format: Article
• Language: English
• Subjects: Catalyst supporting materials; Electrocatalyst; Multi-walled carbon nanotube; Nanocomposite; PEM fuel Cell
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2020.10.200

In this study, the polymer/MWCNT nanocomposites were synthesized from the pristine MWCNT and polymer binders using functionalization with solution processing methods. The synthesized polymer/MWCNT nanocomposites exhibited high specific surface areas than the pristine MWCNT. The MWCNT/Nafion nanocomposite attributed to the maximum peak current at 5.795 × 10−5 (A) while the peak current of MWCNT/PBI was obtained at 3.662 × 10−5 (A). Moreover, polymer/MWCNT based electrocatalysts performed better electrochemical activity because of polymers binders can assist electrochemical interaction using the high surface areas of the catalyst supporting material. Also, the MEAs fabricated using the hot pressing method, while the acid doped PBI membrane sandwiched between the electrodes. The fabricated MEAs were successfully demonstrated in a single cell and found capable of measuring a maximum power density of 112.10 mW/cm2 under 150 °C temperature. In conclusion, the synthesized catalyst-supporting materials enhanced the electrochemical activity and catalyst stability which fulfilling the main objective of this study. •Catalyst supporting materials were synthesized by solution processing methods.•Polymer/MWCNT nano-composites considerably enhanced in the BET surface area.•MWCNT/PBI/Pt electrocatalyst exhibits higher catalytic activity and constancy.