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 14 of 14 for “"OCV"”.
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NOVEL APPROACHES TO FAST OCV CHARACTERIZATION AND IMPROVED CAPACITY ESTIMATION IN LITHIUM ION BATTERIES
… considers the problem of open circuit voltage (OCV) to state of charge (SOC) characterization in li-ion batteries for battery reuse applications. The traditional approach to OCV-SOC characterization is done by collecting voltage and current data through a slow discharge and charge process; this …
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Investigations of enterotoxigenic E. Coli (ETEC) intestinal colonization in neonatal mice and human shedding of panchol, a new live attenuated oral cholera vaccine
… new live attenuated oral cholera vaccines (OCV) are in development and offer significant advantages. PanChol is a live attenuated OCV entering phase I trials. SPECIFIC AIMS: To propel studies of ETEC pathogenesis, I attempted to create a suckling mouse model of this globally important …
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Production of single cell anode-supported SOFC using NiO/YSZ-YSZ-LSM/YSZ powder materials
… Performance of open circuit voltage (OCV) for U/S and BM process is 0.8 V and 0.66 V, respectively. Power density performance for U/S and BM process is 200.41mA/cm2 and 151.63mA/cm2 respectively. The results indicated that the performance of OCV and power density for U/S were 33.34% …
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Development and experimental investigation of direct urea fuel cells
… The single cell attains an open circuit voltage (OCV) of 0.72 V, while the stack reaches 8.8 V. The energy and exergy efficiencies are 58% and 24% at 5 M KOH for single cells, and 48% and 41% at 65°C for stack, respectively. The electrochemical impedance spectroscopy (EIS) shows impedance …
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NOVEL ZINC AND LITHIUM NON-AQUEOUS BATTERIES FOR LOW RATE APPLICATIONS
… in this thesis. Results are reported for OCV measurements and discharge curves for loaded cells under varying degrees of relative humidity. Using methods based on polarography the speciation between the oxidation states of manganese as a function of the degree of cell discharge has been …
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Porous Silicon as a Proton Exchange Membrane for Direct Methanol Fuel Cells
… current data shows that an open circuit voltage (OCV) of 0.25V was achieved with one layer when operating at 20oC. When adding a second layer of porous silicon, the OCV was raised to approximately 0.32V under the same conditions. The experimental data suggests that the current collected also …
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A comparative study of PtCo/C Alloys and Pt/C as cathode catalysts for fuel cell applications
… will be presented for catalysts operating at OCV and under load with oxygen cathode gas. In addition, studies have been conducted with nitrogen cathode feed gas to investigate the effect of potential and temperature on the processes of oxide formation and removal on both Pt/C and PtCo/C …
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So<sub>2</sub> Adsorption On Carbon-Supported Pt Electrocatalyst
… effects. For example at Open Circuit Voltage (OCV) conditions, accumulations of SO<sub>2</sub> in PEMFCs were studied and the data showed that the primary accumulation was on the Pt/C electrocatalysts. Therefore, adsorption isotherms were obtained for SO<sub>2</sub> on Pt/C …
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The Redox Reaction of Anhydrous Hbr For Hydrogen Production and Bromine Hydrogen Flow Battery
… tested with respect to open circuit potential (OCV) and V-I polarization in both charge and discharge modes as function of bromine content. Operation of this flow battery is then analyzed via a mathematical model. A key feature of this model is water transport across the membrane, which …
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Layered perovskites as cathode materials for IT-SOFC
… and LSGM-9182 electrolytes respectively under OCV condition. To improve the ASR of LGSCu, the composite of LGSCu and GDC with varying wt. % of GDC has been optimised and it shows the ASR of 0.12 Ωcm² using GDC as the electrolyte because it enhance the triple phase boundary region. The maximum …
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Optimisation of Valve Regulated Lead Acid Battery Design for High Power Applications
… and predicting the open circuit voltage (OCV) for a VRLA battery system was applied to the low and standard performance product, providing estimation errors of just 0.2%. Secondly, an analytical equation system was used to simulate different pore geometries. <br/><br/>The analysis was …
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Characterization and modification of electrospun fiber mats for use in composite proton exchange membranes
… the capability for higher open circuit voltages (OCV) and comparable cell resistances when compared to Nafion.
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Evaluation of TiO2 as a Pt-Catalyst Support in a Direct Ethanol Fuel Cell
Direct ethanol fuel cells are of interest due to the high energy density, ease of distribution and handling, and low toxicity of ethanol. Difficulties lie in finding a catalyst that can completely oxidize ethanol and resist poisoning by intermediate reaction species. Degradation of the catalyst …
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Analisi e gestione dei sistemi di accumulo dell’energia a batteria e degli impianti fotovoltaici
… carica (SOC) dalla tensione a circuito aperto (OCV). In particolare, viene descritto come il SOC possa essere dedotto in modo affidabile dalla tensione di rilassamento in breve tempo grazie ad una funzione di predizione. L'integrazione di tale funzione nell'osservatore PI consente di ottenere un …