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Showing 1 to 20 of 21 for “"LMO"”.
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Recovery and regeneration of lithium manganese oxide from spent lithium-ion batteries
… and regenerating Lithium Manganese Oxide (LMO) from spent Lithium-polymer batteries in order to recycle it in an environmentally friendly way. Two different processes for separating LMO were developed and the environmental impact of the two processes was analyzed. A process for relithiating …
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Synthesis and reactivity of molybdenum organometallic complexes supported by amide ligands
… is reported. Molybdenum complexes of the type X[LMoC13] (X = Et3NH, Bu4N) are readily synthesized as purple air and moisture sensitive crystalline solids. They may be alkylated by Grignard reagents to yield the monoalkyl complex LMo(Cl)(CH2CMe3), the alkylidyne complex LMo(CCMe3)(CH2CMe3) via a,a …
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Operando investigations of mechanical changes in lithium-ion batteries
… deposition of protective coatings on the spinel LMO lithium-ion battery cathode is effective in reducing Mn dissolution from the electrode surface. Although protective coatings positively affect LMO cycle life, much remains to be understood regarding the interface formed between these coatings …
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Self-reporting of Mn ion dissolution and self-stabilization of cathode-electrolyte interface in lithium ion batteries
… interface. Lithium manganese oxide (LMO) is a promising cathode material for lithium-ion batteries due to its high operating voltage, high thermal stability, environmental friendliness, and low cost. One of the most significant issues limiting its performance is the dissolution of Mn, …
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Characterization and control of lithium-ion battery interfaces
… naturally formed SEI on lithium manganese oxide (LMO) cathodes utilizing alkylphosphonic acids to decorate the metal oxide surface with self-assembled monolayers (SAM). In this work we found that the electrochemical behavior of LMO half-cells could be tuned by choosing different alkyl moieties for …
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Surface studies of Li-ion and Mg battery electrodes
… and Au coating to minimize dissolution: LiMn2O4 (LMO) is known to dissolve Mn ions with cycling. This section focuses on both the effect of the dissolution of Mn2+ into the electrolyte as well as Au coating on the LMO to improve electrochemical performance. Electrochemical quartz crystal …
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Development and Scaling up of Oxide Buffer Architectures on Flexible Substrates for Efficient and Application-Derived Growth of REBCO Thin Films
… an average out-of-plane texture spread Δω of LMO (002) between 3.22° and 3.24° for sides 1 and 2, respectively and an average in-plane texture spread Δɸ of LMO (110) between 7.6° and 7.64° for sides 1 and 2, respectively. These values are comparable with the texture of single-sided commercial …
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Deep understanding of degradation in lithium ion batteries through experimental and first-principles study
… coating intensifies the Mn dissolution of LMO and it was confirmed in several ways, including ICP-OES measurement, Mn vacancy formation energy calculation, COOP analysis, PDOS analysis, and cell level performance. Paper III revealed that the ALD CeO<sub>2</sub> coating thickness impact on …
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Magnetic Characterisation of Nanostructured Magnetic Systems Using SQUID Magnetometry
… on a selection of doped lanthanum manganate (LMO)magnetic nanoparticles (MNPs), a family of lanthanide ionic liquids, and finally on three distinct magnetic crystals synthesized using an acetate ionic liquid in place of a more conventional solvent.<br/><br/> Investigation into the effect of …
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Experimental simulation of Lunar Magma Ocean crystallization : insights into mantle composition and the source regions of lunar basaltic magmatism
… at the appropriate depths. However, these early LMO cumulates provide good fits for the source regions for a component of the high-Mg*, Ni- and Co-poor parental magmas of the Mg-suite cumulates. These LMO cumulates could generate partial melts meeting the criteria of the Mg-suite parent by KREEP …
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Möglichkeiten eines DMO-Prozesses in der CMP-Refraktionsseismik
… bzw. der Ortskoordinate abh¨angen. Weil auch die LMO-Korrektur unabh¨angig von der Zeit ist, sind LMO und Refraktions-DMO,im Gegensatz zu NMO und Reflexions-DMO, im Processing kommutativ. Die Kommutativit ¨at vereinfacht das urspr¨unglich in Analogie zur Reflexionsseismik entwickelte Processing. …
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Development of REBCO Tapes on Non-Metallic Flexible Substrates for RF Applications
… Homo-epitaxial MgO and epitaxial LaMnO3 (LMO) thin films were deposited via reel-to-reel medium-frequency magnetron sputtering and radio-frequency magnetron sputtering, respectively. The out-of-plane and in-plane texture of homo-epitaxial MgO were optimized to 2° full-width-at-half-maximum …
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Application and economic feasibility of functionally graded composite for lead-bismuth service
… researched, and when used along with T91 (9Cr-lMo) as base material, it will be applicable in tubes production mainly for advanced LBE (Lead-Bismuth Eutectic) reactor systems. An analysis was carried out on this new technology's benefits and its commercialization to evaluate whether or not the …
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Surface structural changes of perovskite oxides during oxygen evolution in alkaline electrolyte
… OER activities such as LaCoO₃ (LCO) and LaMnO₃ (LMO) remained crystalline under identical electrochemical conditions. In addition, the OER activity and tendency for amorphization are found to correlate with the oxygen p-band center as calculated using density functional theory. This work …
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An experimental and petrologic investigation of the source regions of lunar magmatism in the context of the primordial differentiation of the Moon
… for low-degree partial melting of late-stage LMO cumulates to generate Fe-rich partial melts. Chapter 3 presents datasets from NWA 032 that document one of the only occurrences of oscillatory zoning in lunar minerals. A model is presented that explains the zoning patterns in olivine and …
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Microcapsule-based strategies for enhanced performance of lithium-ion batteries
… is investigated in both NCA/graphite and LMO/graphite batteries. Electrochemical Impedance Spectroscopy (EIS) and cycling at different rates are conducted for pouch cells with varying VC additive (0, 2 and 5 wt%) and VC microcapsules (5 wt% VC). In NCA/graphite batteries, pouch cells with …
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Investigation of molybdenum sulfur interactions via single crystal EPR and photoelectron spectroscopy: Implications to molybdoenzymes
… phase photoelectron spectra (PES) of the series LMo(E)(OR)₂ [(L=hydrotris(3,5-dimethylpyrazolyl)borate), (E=O, NO)] were explored as a point of reference to the analogous thiolate complexes. These studies show that the nitrosyl complexes (formally Mo(II)) are 0.8 eV more difficult to ionize than …
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Vertically Aligned Nanocomposite Thin Films for Micro-Battery and Nanoionic Applications
… performance is dependent on both the LMO pillar crystallographic orientation and dimensions. The latter dependence has not been shown before and it has very important ramifications for the development and future of 3D architectured thin film VAN batteries. Beyond VAN batteries, the …
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First principle study of Nax[TiyZnzMnw]O2 as a cathode material for sodium-ion batteries
… The findings predict that all nickel-doped LMO structures on the ground state line are most likely stable. Relevant structures are NaMnO2, NaTiO2, NaTiMn2O2 and NaTi2MnO2 for NaxMnTiO2 CE-predicted structures and NaMnO2, NaZnO2, Na3Mn2ZnO6, Na6MnZn5O12, Na6Mn2Zn4O12, Na2MnZnO4 and …
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Manifold learning techniques and statistical approaches applied to the disruption prediction in tokamaks
… The time evolution of the Logit Model output (LMO) has been used as disruption proximity index by introducing a suitable threshold. Data for the training and the tests of the Logit models have been extracted from AUG experiments executed from May 2007 to November 2012. Disruptive samples have …
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