ABSTRACT In this thesis, several models of solid oxide fuel cell (SOFCs) were developed in cell and system levels. These modelswere used in several case studiesto simulate the performance of the cells and systems studied. In addition, the effectiveness of SOFC in reducing greenhouse gases was assessed through a case study.
This PhD thesis presents a modelling and simulation approach for coupling a Solid Oxide Fuel Cell (SOFC) with a Vapour Absorption Refrigeration System (VARS) specifically for refrigerated trucks. Zero dimensional models were developed for the SOFC and VARS and detailed 1D and 3D models were developed for various components of the system.
In this thesis, fuel cell systems are analysed thermodynamically and electrochemically. Thermodynamic relations are applied in order to determine the change of first law and second law efficiencies of the cells, and using the electrochemical relations, the irreversibilities occuring inside the cell are investigated.ABSTRACT Solid oxide fuel cell (SOFC) is a promising alternative energy source, with its advantages of high operating efficiency, fuel flexibility, low emissions and relatively low cost. However, there are several challenges concerning the SOFC research.An innovative current collection architecture for micro-tubular solid oxide fuel cells (SOFC) has been developed. A nickel wire is coiled around a thin carbon composite rod in order to fabricate cell supports. Different carbon composites such as pencil leads and carbon fibres were investigated.
Solid oxide fuel cells represent an energy conversion device with high efficiency and fuel versatility but continue to suffer from cost and durability issues, hindering commercial viability.Read More
Chengsheng Ni PhD thesis iii Abstract Solid oxide fuel cells (SOFCs) are the most efficient electrochemical devices to directly convert stored chemical energy to usable electrical energy. The infiltration of ceramic conductors and catalytic metals (e.g. Ni, Pt and Pd) into porous scaffolds that.Read More
The solid oxide fuel cell (SOFC) offers great promise and is present Jump to main content. . diagrams etc. contained in this article in third party publications or in a thesis or dissertation provided that the correct acknowledgement is given with the reproduced material.. Solid oxide fuel cells.Read More
Sheikhansari, Abdolkarim (2017) Evaluation of Solid Oxide Fuel Cells Operating on Hydrogen Sulfide Contaminated Fuel. PhD thesis, University of Sheffield.Read More
Chapter 1 gives a short introduction to fuel cells including the electrochemical principles and the conventional and state-of-the-art materials of Solid Oxide Fuel Cells (SOFC). It also presents the motivation and objectives of the thesis.Read More
Optimisation of Electroless Co-deposited Solid Oxide Fuel Cell Electrodes by Nkem O.E. Nwosu (B.Sc, M.Sc) A thesis submitted in partial fulfilment of the requirements of Edinburgh Napier University, for the award of Doctor of Philosophy June 2013.Read More
This thesis presents some model developments for the simulation and optimization of the design of fuel cells, in particular for the Solid Oxide Fuel Cell (SOFC) and Proton Exchange Membrane Fuel Cell (PEMFC). However, the approaches and models presented can be basically applied to any type of fuel cell. In this study, the multicomponent diffusion processes in the porous medium of a SOFC anode.Read More
The objective of this dissertation is the development of new material combination for the fuel electrode with an improved tolerance against contaminants in the fuel gas.Read More
Perovskite oxides have high catalytic activities for oxygen electrocatalysis competitive to platinum at elevated temperatures. However, little is known about the oxide surface chemistry that influences the activity near ambient oxygen partial pressures, which hampers the design of highly active catalysts for many clean-energy technologies such as solid oxide fuel cells.Read More