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Due to rising energy demand and global warming, the world is shifting from nonrenewable energy to renewable sources, such as fuel cells (FCs), due to their high energy conversion efficiency and environmental friendliness. A proton exchange membrane fuel cell (PEMFC) is an environmentally friendly and efficient FC. It converts the chemical energy stored in hydrogen fuel into electrical energy. A polymer electrolyte membrane (PEM) is a core element of the membrane electrode assembly (MEA). It transfers a proton from the anode to cathode, restricts electron flow across the membrane surface, and prevents reactant mixing. Sulfonated poly(ether ether ketone) (SPEEK)-based membranes are effective PEMs as compared to commonly used Nafion membranes due to their excellent chemical, thermal, and mechanical stability as well as cost-effectiveness. However, it suffers from poor proton conductivity. Normally …