Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/23113
Title: Direct methanol fuel cell catalysts with controllable interface
Authors: LIU FANG
Keywords: DMFC, methanol oxidation electrocatalysts, Pt-oxophilic metal pair sites, bifunctional catalysis, multi-segment nanorods, macroporous film
Issue Date: 12-Apr-2007
Source: LIU FANG (2007-04-12). Direct methanol fuel cell catalysts with controllable interface. ScholarBank@NUS Repository.
Abstract: This thesis is focused on producing model anode electrocatalysts for room temperature electrooxidation of methanol to prove the existence of Pt-oxophilic metal pair sites and to delineate their contributions to methanol eletrooxidation by bifunctional catalysis. Model bimetallic and multi-component catalysts with customizable and easily identifiable Pt-oxophilic metal interfaces were produced by templated electrodeposition as segmented nanorods consisting of an alternating sequence of Pt and the oxophilic metal(s); and as a macroporous film of the oxophilic metal on Pt. The model catalysts were comprehensively characterized for morphology, overall composition, distribution of the constituent metals, metal oxidation states, crystal structures; and the number of bimetallic interfaces. The catalytic activities and CO tolerance of the model catalysts in methanol electrooxidation were measured by voltammetry and chronoamperometry in laboratory half cells simulating the room temperature operation of a direct methanol fuel cell (DMFC) anode under acidic conditions.
URI: http://scholarbank.nus.edu.sg/handle/10635/23113
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Thesis-LF-2007.pdf12.57 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

212
checked on Dec 11, 2017

Download(s)

143
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.