title: Design of an Advanced Membrane Electrode Assembly Employing a Double-Layered Cathode for a PEM Fuel Cell.
abstract: The membrane electrolyte assembly (MEA) designed in this study utilizes a double-layered cathode: an inner catalyst layer prepared by a conventional decal transfer method and an outer catalyst layer directly coated on a gas diffusion layer. The double-layered structure was used to improve the interfacial contact between the catalyst layer and membrane, to increase catalyst utilization and to modify the removal of product water from the cathode. Based on a series of MEAs with double-layered cathodes with an overall Pt loading fixed at 0.4 mg cm(-2) and different ratios of inner-to-outer Pt loading, the MEA with an inner layer of 0.3 mg Pt cm(-2) and an outer layer of 0.1 mg Pt cm(-2) exhibited the best performance. This performance was better than that of the conventional single-layered electrode by 13.5% at a current density of 1.4 A cm(-2).
authors.affiliation: Fuel Cell Research Center, Korea Institute of Science and Technology , 14gil-5 Hwarang-ro Sungbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: GyeongHee
authors.initials: G
authors.lastname: Kim
authors.affiliation: Fuel Cell Research Center, Korea Institute of Science and Technology , 14gil-5 Hwarang-ro Sungbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: KwangSup
authors.initials: K
authors.lastname: Eom
authors.affiliation: Department of Materials Science & Engineering, Korea Advanced Institute of Science and Technology , 291 Daehak-ro Yuseong-gu, Daejeon 305-701, Republic of Korea.
authors.forename: MinJoong
authors.initials: M
authors.lastname: Kim
authors.affiliation: Fuel Cell Research Center, Korea Institute of Science and Technology , 14gil-5 Hwarang-ro Sungbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Sung Jong
authors.initials: SJ
authors.lastname: Yoo
authors.affiliation: Fuel Cell Research Center, Korea Institute of Science and Technology , 14gil-5 Hwarang-ro Sungbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Jong Hyun
authors.initials: JH
authors.lastname: Jang
authors.affiliation: Fuel Cell Research Center, Korea Institute of Science and Technology , 14gil-5 Hwarang-ro Sungbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Hyoung-Juhn
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Department of Materials Science & Engineering, Korea Advanced Institute of Science and Technology , 291 Daehak-ro Yuseong-gu, Daejeon 305-701, Republic of Korea.
authors.forename: EunAe
authors.initials: E
authors.lastname: Cho
keywords: catalyst-coated gas diffusion layer; decal transfer method; double-layered electrode; membrane electrolyte assembly; polymer electrolyte membrane fuel cell; water removal