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 15 of 15 for “"Composite Cathode"”.
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Field emission from a multiple emitter composite cathode.
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1965. B.S.
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Samarium strontium cobalt oxide – samarium doped ceria carbonate (SSC-SDCC) as a new potential composite cathode material for low temperature solid oxide fuel cell
… regarding SSC-SDC carbonate (SSC-SDCC) as composite cathode is limited despite great chemical compatibility and cell performance achieved with other low temperature solid oxide fuel cell (LTSOFC) components. LTSOFC based on SDCC electrolyte display lower of area specific resistance (ASR) …
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Development of New Cathodic Interlayers with Nano-Architectures for Lithium-Sulfur Batteries
… a sulfur/multi-walled carbon nanotube (S/MWCNT) composite cathode. The cell with this configuration showed a good cycle life at a high current rate ascribed to (a) a strong interaction between the polysulfides and ZnO nanowires grown on conductive substrates; (b) fast electron transfer and (c) an …
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Synthesis and Characterization of Polymer Composite Materials For Lithium Battery Cathodes and Capacitors
… the synthesis and characterization of polymer composite materials used in lithium primary batteries and capacitors. The objective of the first part of the dissertation is to develop cathode materials based on silver vanadium oxide (SVO) coated with polypyrrole (PPy) having lower …
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Tailoring Perovskite- and Fluorite-Type Oxides for Solid Oxide Fuel Cells (SOFCs)
… serve as alternate anodes, electrolytes, and cathodes for intermediate temperature SOFCs. Here, the chemical reactivity between a fluorite-based Ce0.7RE0.2Mo0.1O2 (RE = Y, Sm) anode and 8 mol% yttria-stabilized zirconia electrolyte was evaluated at 1000 ºC. The electrical conductivity of the …
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Mechanical Properties and Electrochemical Durability of Solid Oxide Fuel Cells
… fracture strength testing. Half cell SOFCs with composite cathode (Pr0.7Sr0.3)MnO3±Î´ /8YSZ on the 8YSZ electrolyte were aged 1000 hours at 1000 oC in air with/without polarization and investigated using Electrochemical Impedance Spectroscopy (EIS), Scanning Electron Microscopy (SEM), …
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NANOSTRUCTURED MATERIALS FOR ALKALIS ION BATTERIES AND THEIR MECHANISTIC STUDIES
… improved, which urges the exploitation of novel composite cathode or anode materials high specific capacity, high rate capability, especially stability and capacity retention when battery undergoes an extreme charging process as indicated recently. The first part of this thesis aims to …
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Continuum modeling of electro-chemo-mechanical phenomena in all-solid-state batteries
… features a Lithium-metal anode, a solid-state composite cathode, and a stiff ceramic electrolyte. While an attractive alternative, commercialization of SSBs faces a series of chemo-mechanical issues across its constituents, namely growth induced fracture of solid-state electrolyte (SSE) due to …
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In situ investigation of electrochemical surface stress development in rechargeable batteries
… Lithium ions shuttle reversibly between the cathode and anode during charging and discharging. Typically, intercalation cathodes deliver around one hundred to two hundred in specific capacity. The operating voltage is around three to five vs. lithium. The current inorganic-compound cathodes …
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Thermodynamic stability of perovskite and lanthanum nickelate-type cathode materials for solid oxide fuel cells
… with the oxygen reduction reaction(ORR) at the cathodes. Hence, improving the cathode design will greatly enhance the overall performance of SOFCs. Lanthanum nickelate, La2NiO4+δ (LNO), is a mixed ionic and electronic conductor that has competitive surface oxygen exchange and transport …
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Investigation of high-performance lithium-ion batteries based on highly conductive Li7La3Zr2O12 solid-state electrolyte and stable electrode-electrolyte interface
… (2) surface modification of LiNi1/3Co1/3Mn1/3O2 cathode particles, (3) composite polymer electrolytes, and (4) application of plastic-crystal interfacial modification.Chapter 3 explores a low-temperature synthesis strategy to obtain cubic LLZO powders via a combination of sol-gel method and ball …
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Enhancement In Electrochemical Performance Of Advanced Battery Electrodes Using Carbon- Nanomaterial Composites
<p>LiFePO4 has attracted great interest as a cathode material for lithium ion batteries due to its reasonably high theoretical capacity (170mAh/g), thermal stability, high Li ion reversibility and low cost. However, prohibitively low electronic conductivity (~10-9 S/cm) of LiFePO4 leads to high …
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Design, Development and Structure of Liquid and Solid Electrolytes for Lithium Batteries
… Moving further, the thesis presents two novel composite solid electrolytes (CSE) that were developed and fully characterized. Both of which were composed of the following four components; polyethylene oxide (PEO), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt, lithium lanthanum …
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Investigation of non-intercalation electrode materials for next-generation batteries
… electrochemical properties of FeF2 conversion cathodes coated on a 3D Ni scaffold with a thin layer of Al2O3 are studied. The 3D scaffold improves the reaction kinetics and enables a high specific capacity by providing an efficient electron pathway to the insulating FeF2 and shortening Li …
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Improvement of Cathode Material for Solid Oxide Fuel Cell through Surface Infiltration and Electrospinning
… (LSCF/CGO; LSCF:CGO = 1:1) cathode in solid oxide fuel cell applications. One method involved altering the surface of the LSCF/CGO by including metal oxide nanoparticles. By utilizing an infiltration approach, Co<sub>3</sub>O<sub>4</sub>, NiO and CuO nanoparticles with a …