Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells

The increasing rate of depletion of fossil fuels and pollution has led to an increasing demand for alternative energy sources and more efficient energy conversion methods. Fuel cell is a kind of electrochemical device that converts chemical energy of fuels to electrical energy directly. The p...

Full description

Saved in:
Bibliographic Details
Main Author: Hu, Andy Jianwei.
Other Authors: Jiang San Ping
Format: Final Year Project
Language:English
Published: 2010
Subjects:
Online Access:http://hdl.handle.net/10356/40128
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-40128
record_format dspace
spelling sg-ntu-dr.10356-401282023-03-04T19:33:46Z Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells Hu, Andy Jianwei. Jiang San Ping School of Mechanical and Aerospace Engineering Advanced Materials Research Centre DRNTU::Engineering::Materials DRNTU::Engineering::Mechanical engineering::Alternative, renewable energy sources The increasing rate of depletion of fossil fuels and pollution has led to an increasing demand for alternative energy sources and more efficient energy conversion methods. Fuel cell is a kind of electrochemical device that converts chemical energy of fuels to electrical energy directly. The proton exchange membrane fuel cells are one of the most promising clean technologies under development among all fuel cells. Their high energy efficiency, of up to 64%, makes them extremely attractive for use in future transportation when compared to the traditional internal combustion engines. However, the low proton conductivity in high temperature and low relative humidity, chemical and thermal stability in high temperature, durability and low cell performance levels are still strong limitations for its widespread usage. The objective of the project is to investigate novel proton conducting nanocomposite membrane based on self-assembled meso-SiO2 inorganic electrolyte doped with phosphotungstic acid (HPW) for high temperature operation. The inorganic electrolytes were synthesized using the EISA method and the membranes prepared via a self-assembly process. The proton conductivity improved when the SBA-15 is doped with 25wt% of HPW. This improvement in conductivity should be attributed to either the continuous proton conduction channels, which were structured by the anchored HPW molecules in the well-ordered mesopores of SiO2 or the increase in hydrogen bond by the presence of HPW. It is observed that the conductivity increases with the increase in temperature. The results provide a good foundation for further design and development of high temperature proton exchange membrane fuel cell for operations of 150 °C and above in the next phase of study. Bachelor of Engineering (Mechanical Engineering) 2010-06-10T08:35:00Z 2010-06-10T08:35:00Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/40128 en Nanyang Technological University 56 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials
DRNTU::Engineering::Mechanical engineering::Alternative, renewable energy sources
spellingShingle DRNTU::Engineering::Materials
DRNTU::Engineering::Mechanical engineering::Alternative, renewable energy sources
Hu, Andy Jianwei.
Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells
description The increasing rate of depletion of fossil fuels and pollution has led to an increasing demand for alternative energy sources and more efficient energy conversion methods. Fuel cell is a kind of electrochemical device that converts chemical energy of fuels to electrical energy directly. The proton exchange membrane fuel cells are one of the most promising clean technologies under development among all fuel cells. Their high energy efficiency, of up to 64%, makes them extremely attractive for use in future transportation when compared to the traditional internal combustion engines. However, the low proton conductivity in high temperature and low relative humidity, chemical and thermal stability in high temperature, durability and low cell performance levels are still strong limitations for its widespread usage. The objective of the project is to investigate novel proton conducting nanocomposite membrane based on self-assembled meso-SiO2 inorganic electrolyte doped with phosphotungstic acid (HPW) for high temperature operation. The inorganic electrolytes were synthesized using the EISA method and the membranes prepared via a self-assembly process. The proton conductivity improved when the SBA-15 is doped with 25wt% of HPW. This improvement in conductivity should be attributed to either the continuous proton conduction channels, which were structured by the anchored HPW molecules in the well-ordered mesopores of SiO2 or the increase in hydrogen bond by the presence of HPW. It is observed that the conductivity increases with the increase in temperature. The results provide a good foundation for further design and development of high temperature proton exchange membrane fuel cell for operations of 150 °C and above in the next phase of study.
author2 Jiang San Ping
author_facet Jiang San Ping
Hu, Andy Jianwei.
format Final Year Project
author Hu, Andy Jianwei.
author_sort Hu, Andy Jianwei.
title Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells
title_short Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells
title_full Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells
title_fullStr Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells
title_full_unstemmed Development of novel Nafion/Meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells
title_sort development of novel nafion/meso-silicon-oxide membranes doped with phosphotungstic acid for high temperature proton exchange membrane fuel cells
publishDate 2010
url http://hdl.handle.net/10356/40128
_version_ 1759856862566547456