1. Center for Hydrogen and Fuel Cell Research Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
2. Division of Energy & Environment Technology University of Science and Technology (UST) Daejeon 34113 Republic of Korea
3. Advanced Textile R&D Department Korea Institute of Industrial Technology (KITECH) 143, Hanggaulro, Sangnok‐gu Ansan‐si Gyeonggi‐do 15588 Republic of Korea
4. Fuel Cell Laboratory Korea Institute of Energy Research (KIER) Daejeon 3429 Republic of Korea
5. Advanced Photovoltaics Research Center Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
6. School of Chemical Engineering Pusan National University 2 Busandaehak‐ro 63beon‐gil Geumjeong‐gu Busan 46241 Republic of Korea
7. Department of Organic Material Science and Engineering Pusan National University 2 Busandaehak‐ro 63beon‐gil Geumjeong‐gu Busan 46241 Republic of Korea
8. School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USA