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dc.contributor.advisorNicolosi, Valeria
dc.contributor.authorDaly, Dermot
dc.date.accessioned2018-05-25T13:11:02Z
dc.date.available2018-05-25T13:11:02Z
dc.date.submitted2018
dc.identifier.citationDermot Daly, 'Electron and Ion Microscopy Analysis of flexible Super Capacitors and Lithium Ion Battery Electrodes'en
dc.identifier.urihttp://hdl.handle.net/2262/82967
dc.description.abstractSuper capacitors and lithium ion batteries are both major technology sectors within the renewable energy industry and energy research. They offer applications and products the chance of recharging capability and give opportunities for various technologies to become mobile. They also offer opportunities for industries and society to transfer from fossil fuel reliant based technologies. A good example is electric cars – Tesla, Toyota etc. that are recharged by solar power. As the science and engineering disciplines try to improve these technologies by using new materials for electrodes, separators, binders, additives and electrolytes there are major risks of new failure mechanisms appearing in these devices. The reliability and aging of such products needs to be investigated and fully understood. It is well known that there are gaps in our knowledge in certain key areas of both types of devices. A goal is to avoid early failure and improve product specifications and performance by enhancing charge cycles and storage lifetime. All this while keeping costs and environmental impact to an absolute minimum. The types of materials now being used in these new devices include novel carbon-based structures like graphene and carbon nano tubes along with other 2D types of nano materials to enhance and increase the surface area available for charging, storing capacitance and energy while also improving the electrical connections and structural integrity. How these new materials interact, move and degrade during the device operation is part of the study undertaken here. By using known post mortem analysis methods, root cause investigations and lessons learned on both commercially available and prototype supercapacitors and Lithium Ion batteries the hope is to understand the working mechanisms and some of the failures or performance fading that are observed. Moreover, with various analytical tools including SEM, FIB and TEM we hope to improve our understanding and the lifetime performance of these prototype devices. The focus of this study has been using construction analysis, SEM, EDX and FIB inspections of the various materials along with trials of in-situ electrochemical testing of as-built real-life device within a TEM. In-situ TEM testing of electrochemical devices is currently a major area of interest within energy research. There is an ongoing need to fully understand the electrode to electrolyte interfaces along with all the other possible side reactions and to try and monitor the influence of known and un-known impurities. All these variables contribute to a complex arena of devices, electrochemistry and material science within renewable energy research.en
dc.language.isoenen
dc.titleElectron and Ion Microscopy Analysis of flexible Super Capacitors and Lithium Ion Battery Electrodesen
dc.typeThesisen
dc.publisher.institutionTrinity College Dublin. School of Chemistryen
dc.type.qualificationlevelResearch Mastersen
dc.type.qualificationnameMaster of Scienceen
dc.rights.ecaccessrightsopenAccess


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