Protonic conducting organic/inorganic nanocomposites for polymer electrolyte membrane |
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| Institution: | 1. Energy Fundamental Division, Electrotechnical Laboratory, AIST, Tsukuba, Ibaraki 305-8568, Japan;2. Minase Research Institute, Sekisui Chemical Co. Ltd., Osaka 618-8589, Japan;3. Institute of Physics, Opole University of Technology, 75, Ozimska str., 45370 Opole, Poland;4. Vlokh Institute of Physical Optics, 23, Dragomanov str., 79005 Lviv, Ukraine;5. Institute of Physics, Jan Dlugosz University, 13/15, Armii Krajowej al., 42200 Czestochowa, Poland;1. CICECO - Aveiro Institute of Materials, Department of of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal;2. INNOVNANO, Materiais Avançados, SA, 3040-570 Antanhol, Portugal;3. NEG I.P., Laboratory of Energy, Solar Energy Unit, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal;4. UIDM, ESTG, Polytechnic Institute of Viana do Castelo, 4900 Viana do Castelo, Portugal;5. CEMUC, Mechanical Engineering Department, University of Coimbra, Rua Luís Reis Santos, Coimbra 3030-788, Portugal;1. Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China;2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China |
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| Abstract: | Protonic conducting membrane can be used in many energy technological applications such as fuel cells, water electrolysis, hydrogen separation, sensors and other electrochemical devices. However, polymer electrolyte membrane usually lack thermal stability, resulting in narrow operational temperature windows. So, a new class of polymer membrane with high temperature stability and protonic conductivity is desired for many industrial applications. In this paper, new synthetic routes have been investigated for organic/inorganic nanocomposites hybrid polymer membranes of SiO2/polymer (polyethylene oxides (PEO); polypropylene oxide (PPO); polytetramethylene oxide (PTMO)). Novel protonic conducting properties have also been investigated. The materials have been synthesized through sol–gel processes in flexible, ductile free-standing thin membrane form. The hybrid membrane has been found to be thermally stable up to 250°C and possess protonic conductivities of approximately 10−4 S/cm at temperature windows from room temperature to 160°C and relative humidity. |
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