Wei Wuen NgHui San ThiamYean Ling PangYun Seng LimJianhui Wong2024-10-152024-10-152023-03-0410.1007/s10008-023-05446-5https://dspace-cris.utar.edu.my/handle/123456789/2219Self-healable Nafion-poly(vinyl alcohol)/phosphotungstic acid proton exchange membrane prepared by freezing–thawing method for direct methanol fuel celljournal-article