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 8 of 8 for “"anionic redox"”.
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Understanding and Exploiting Anion Redox Process for High Energy Density Positive Electrode Materials for Li-ion Batteries
… metal oxides, store charges through the redox activity of transition metal species, accompanied by the intercalation and deintercalation of Li-ions into and out of the host structure. Layered lithium nickel, manganese and cobalt oxides (NMC) are state-of-the-art commercial positive …
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Multiscale chemistry and design principles of stable cathode materials for Na-ion and Li-ion batteries
… The prospect of combined cationic and anionic redox processes to enhance the energy density of cathode materials is discussed. Structural and chemical complexities in cathode materials during electrochemical cycling as well as due to anionic redox are summarized. In Chapter 2, we …
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Understanding cation catalytic effects in electron transfer reactions at molecular scale
… in electron transfer involving high-valent, anionic redox couples, and for cationic redox centers, the change in reaction rate is relatively insignificant. Moreover, the observed cation specificity seemed to be independent of the shape or geometry of the redox centers, and also the shape or …
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Toward Engineering Oxygenase Activity into the Electron Transfer Protein Azurin
… Type-2 azurin variants is reported in which the anionic redox ‘chameleon’ Cys-112 is replaced with neutral His-112 in an effort to develop a robust protein scaffold for modeling of substrate C-H bond activation. A series of surrogate, intramolecular substrates that offer an accessible H-atom were …
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Local Structures of Niobium-Containing Cation-Disordered Rocksalt Materials: Cobalt-Free Cathodes for Lithium-Ion Batteries
… supposedly achieved in part through reversible anionic redox, in addition to traditional transition metal redox. They also allow for a broad compositional range, enabling the substitution of expensive, toxic elements such as Co for more abundant, cheaper, and safer transition metal species. …
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Investigation of alternative batteries systems beyond lithium-ion batteries
… a surface-confinement effect for a ferricyanide redox species at the electrode/WiSE interface. Catalytic Effect of Co Nanoparticles in a Sodium-Sulfur Battery. Room-temperature sodium-sulfur (Na-S) batteries have aroused great interest due to their high energy density and high natural abundance. …
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Molecular-Level Understanding of Ionic & Electronic Charge Storage Mechanisms in Rechargeable Aluminum Batteries Using Sold-State NMR
… demonstrate a unique reversible electrochemical anionic redox as a charge storage mechanism, which preserves the crystalline framework structure of the Mo<sub>6</sub>Se<sub>8</sub> and does not involve the breaking and forming of chemical bonds, which is fundamentally different than that observed …