Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Gel polymer electrolyte."”.
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Composite Gel Polymer Electrolyte for Lithium Ion Batteries
… to other alkali metals. In 1997, lithium polymer batteries with solid polymer/composite electrolyte were introduced where the safety drawbacks of the liquid electrolyte were eliminated but the ionic conductivity of the batteries was lower than that of a liquid. In this work, composite gel …
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Characterization of Electrically Controlled Gel Polymer Electrolyte Monopropellants
… there has been a longtime interest in the use of gelled propellants for enhanced handling and operating safety. Atomization and combustion inefficiencies associated with gels have continued to limit their use. Monopropellants composed of gel polymer electrolytes present a unique opportunity which …
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Investigation of polymers used in lithium oxygen batteries as electrolyte and cathode materials
It has been well established that the electrolytes and cathodes have a significant effect on the electrochemical performance of lithium oxygen batteries. In this Master project, polymers were employed as electrolyte and cathode materials due to their unique superior properties. Using different …
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Investigation on Ammonium Perchlorate Based Electrically Controlled Propellants
… ignition behavior of an electrically controlled gel monopropellant (ECGP) composed of an ionically conducting liquid polymer (polyethylene glycol) and ammonium perchlorate (AP) was conducted. Complexation of AP with PEG enabled ion transport when a voltage was applied resulting in ignition. …
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Probing of reaction mechanisms, and development of polymeric materials for lithium-air batteries
… such as the use of volatile and flammable liquid electrolytes, side reactions between the electrolyte/electrode with oxygen reduction products, and high charging over-potentials that lead to poor cycle life. We address these challenges by developing non-flammable polymeric-based electrolytes and …
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MULTILAYER COMPOSITE SOLID ELECTROLYTES FOR LITHIUM ION BATTERIES
… mobile phones to cars. The conventional liquid electrolytes based LIBs are prone to failure in conditions such as high operating temperature, solvent leakage, lithium dendrites formation and thermal runaway, etc. All-solid-state lithium ion batteries (ASSLIBs) provide a promising power strategy …
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Mechanické vlastnosti gelových aprotických elektrolytů
… měřením el. vodivosti a mechanických vlastností gelových polymerních elektrolytů, obsahující lithné ionty a jejich přípravou. Teoretická část se zabývá vývojem gelových polymerních elektrolytů, jejich využití a metodami měření el. vodivosti a mechanických vlastností. V experimentální části je …
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Gel polymer electrolytes for Li metal protection
L'abstract è presente nell'allegato / the abstract is in the attachment
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Nové gelové polymerní elektrolyty
Tato práce se zabývá přípravou gelových polymerních elektrolytů s obsahem alkalických solí a měřením jejich vodivosti. V práci jsou rozebrány materiály používané pro přípravu polymerních elektrolytů a metody jejich přípravy v souvislosti s využitelnými vlastnostmi. Praktická část je zaměřena na …
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Electrochemical and Photoelectrochemical Devices based on Polymeric Materials
L'abstract è presente nell'allegato / the abstract is in the attachment