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Nanotube Buckypaper Electrodes for PEM Fuel Cell Applications

Title: Nanotube Buckypaper Electrodes for PEM Fuel Cell Applications.
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Name(s): Ku, Chung-Lin, author
Liang, Zhiyong, professor directing thesis
Zheng, Jim P., outside committee member
Wang, Ben, committee member
Zhang, Chuck, committee member
Department of Industrial and Manufacturing Engineering, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2007
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Many researchers proposed the use of carbon nanotubes as an advanced metal catalyst support for electrocatalysis applications. In this research, buckypaper (thin film of preformed nanotube network) electrodes with different weight ratios of carbon nanomaterials, including SWNT, MWNT, CNF, and Vulcan XC-72 (CB), were fabricated and compared by their electrochemical properties using cyclic voltammetry (CV) test. Platinum (Pt) nanoparticles were successfully electrodeposited on the mixed buckypapers in mixed ethylene glycol, H2PtCl6, and H2SO4 aqueous solutions by applying a potential pulse at 0.2 and -0.25 V, forming Pt/mixed buckypaper electrodes. The dispersion and particle size of Pt nanoparticles on the buckypapers were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The average diameter of Pt nanoparticles on the buckypapers was 10 nm. Surface areas of the Pt nanoparticles on the mixed buckypapers were determined by cyclic voltammogram measurements in 0.5 M H2SO4 solution, and electrocatalytic performances of the resultant buckypaper electrodes were observed. Compared to the Pt/CB electrodes, the Pt/SWNT+MWNT buckypaper electrode exhibits higher electrocatalytic performance. The highest electrochemical surface area (ECSA) of Pt/SWNT+MWNT (1:3) electrodes reaches 43.7m2/g and is about 1.6 times higher than that of the Pt/CB electrode. This may be attributed to the small particle size and good dispersion of platinum, high conducting property of carbon nanotubes, special deposition phenomenon, and unique three–dimension electrode structure. The research results suggest that mixed buckypapers are good candidates for catalyst supports in fuel cell applications because of their high electrocatalytic performance. The reduction of the amount of precious metal catalyst (Pt) needed is important for real-world applications. Further research into the optimization of Pt deposition and nanostructure of mixed buckypapers could lead to highly efficient and potentially affordable electrodes for fuel cell applications.
Identifier: FSU_migr_etd-2959 (IID)
Submitted Note: A Thesis submitted to the Department of Industrial and Manufacturing Engineering in partial fulfillment of the requirements for the degree of Master of Science.
Degree Awarded: Fall Semester, 2007.
Date of Defense: November 06, 2007.
Keywords: Electrode, Buckypaper, PEMFC
Bibliography Note: Includes bibliographical references.
Advisory Committee: Zhiyong Liang, Professor Directing Thesis; Jim P. Zheng, Outside Committee Member; Ben Wang, Committee Member; Chuck Zhang, Committee Member.
Subject(s): Engineering
Manufacturing processes
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_migr_etd-2959
Owner Institution: FSU

Choose the citation style.
Ku, C. -L. (2007). Nanotube Buckypaper Electrodes for PEM Fuel Cell Applications. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-2959