Fabrication of carbon paper containing PEDOT:PSS for use as a gas diffusion layer in proton exchange membrane fuel cells |
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| Affiliation: | 1. Energy Materials Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea;2. Fuel Cell Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea;1. Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea;2. Department of Mechanical and Aerospace Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea;3. Global Frontier Center for Multiscale Energy Systems, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea;4. Clean Energy and Chemical Engineering, Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea;1. The Key Laboratory of Fuel Cell Technology of Guangdong Province & the Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong, China;2. School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;3. HySA Infrastructure Centre of Competence, Materials Science and Manufacturing, Council for Scientific and Industrial Research (CSIR), PO Box 395, Pretoria 0001, South Africa;1. Universidade Federal de São Carlos, Sorocaba, SP, Brazil;2. Universidade Estadual Paulista, POSMAT, SP, Brazil;3. Universidade de São Paulo, IQSC, São Carlos, SP, Brazil;4. Universidade Estadual Paulista, Instituto de Biociências, Botucatu, SP, Brazil;5. Universidade Estadual de Campinas, IFGW, Campinas, Brazil;1. Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea;2. Department of Mechanical Engineering, Institute of Advanced Machinery and Design (SNU-IAMD), Seoul National University, Seoul 08826, Republic of Korea;3. School of Mechanical Engineering, Soongsil University, Seoul 06978, Republic of Korea;4. KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea;5. Division of Energy and Environment Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea |
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| Abstract: | Carbon papers (CPs) with high electrical conductivities and gas permeabilities have been historically used as gas diffusion layers (GDLs) in proton exchange membrane fuel cells (PEMFCs). CPs with high electrical conductivities are fabricated by the high temperature carbonization of a thermosetting resin, which acts as a binder and makes the CPs brittle to bending. Herein, we report the fabrication of CPs containing a conducting polymer poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) under mild fabrication conditions. These CPs were prepared by combining pristine CP and PEDOT:PSS solutions with ethylene glycol (EG) and graphite powder (GP) and annealing the mixture at 100 °C. The CP containing PEDOT:PSS-EG-GP possessed an electrical conductivity higher than that of conventional CPs that were fabricated by high-temperature carbonization of a thermosetting resin. The mechanical stability of the CPs containing PEDOT:PSS-EG-GP was much higher than that of conventional CPs because of the flexibility of the conducting polymer. Moreover, the novel CP maintained its electrical conductivity after bending. We evaluated the performance of a single-cell for used as a PEMFC in which the GDL was a CP containing PEDOT:PSS-EG-GP. |
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