Fabrication of nanosize-Pt-embedded membrane electrode assembly to enhance the utilization of Ptin PEMFCs.

Title
Fabrication of nanosize-Pt-embedded membrane electrode assembly to enhance the utilization of Ptin PEMFCs.
Authors
최준석
Keywords
fabricationofnanosizeptembeddedmembraneelectrodeassemblytoenhancetheutilizationofptinpemfcs
Issue Date
2011
Publisher
인하대학교
Abstract
Procedure to locate the Pt nanostructure inside the hydrophilic channel of the Nafion membrane was developed to enhance the Pt utilization in PEMFC. Nanosize Pt-embedded MEA was constructed by electroless plating of the membrane surface with copper followed by Pt electrodeposition inside the hydrophilic channels of cathode side of the Nafion membrane. Pt nanostructure was uniformly distributed with nanoporous network structure. Pt formed on hydrophilic channels of membrane behaves as oxygen reduction catalyst, which makes the effective use of the hydrophilic channels with less amount of Pt. Compared with the conventional MEA, performance of Pt-embedded MEA showed an enhanced capability with reduced usage of Pt catalyst. Electrochemical characteristics of Pt-embedded MEA in the operation of PEMFC were investigated with electrochemical impedance analysis.
Description
1. Introduction 1 2. Basic Theory 6 2.1 Operating principle of a proton exchange membrane fuel cell 6 2.2 Nafion membrane 8 3. Experimental 14 3.1 Copper electroless plating 14 3.2 Electrodeposition of Pt nanostructures 19 3.3 Preparation of the membrane electrode assembly (MEA) 21 3.4 Fuel cell performance test 22 4. Results and Discussion 23 5. Conclusions 42 6. References 43
URI
http://dspace.inha.ac.kr/handle/10505/22870
Appears in Collections:
College of Engineering(공과대학) > Chemical Engineering (화학공학) > Theses(화학공학 석박사 학위논문)
Files in This Item:
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