Publications by authors named "G Redhammer"
Article Synopsis
- Recent research shows that cobaltites may serve as a valuable avenue for studying Kitaev physics in honeycomb structures and the Ising model in weakly linked chains.
- The study investigates the magnetic properties of SrCoGeO using neutron scattering, ab initio methods, and linear spin-wave theory to propose a modified Kitaev model for the interactions in this material.
- Findings indicate that external magnetic fields can shift the material's magnetic ordering and suggest modified pyroxenes could offer new insights into Kitaev physics.
Article Synopsis
- LiPSCl is a promising electrolyte for solid-state batteries because of its high lithium-ion conductivity, but it faces issues when used with high-voltage cathodes due to side reactions.
- LiInCl (LIC) is introduced as a more stable alternative for high-voltage applications, acting as a protective coating (LIC@NCA) that improves battery performance.
- Batteries using the LIC@NCA coating demonstrate significantly better discharge capacity and retention over multiple cycles compared to those without the coating, thanks to advanced techniques revealing reduced detrimental reactions at the interface.
Exploring photocatalysts for solar water splitting is a relevant step toward sustainable hydrogen production. Sillén-Aurivillius-type compounds have proven to be a promising material class for photocatalytic and photoelectrochemical water splitting with the advantage of visible light activity coupled to enhanced stability because of their unique electronic structure. Especially, double- and multilayered Sillén-Aurivillius compounds [ABO][BiO]X, with A and B being cations and X a halogen anion, offer a great variety in material composition and properties.
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- Mixed transition metal oxides are being explored as effective materials for energy storage and conversion, necessitating new synthesis methods to optimize their properties.
- The study introduces a novel room-temperature electrodeposition technique for creating defective cubic spinel ZnMnO using ZnO surfaces, which perform multiple roles in the process.
- This innovative approach leads to the development of 2-dimensional twisted nanosheets that enhance electronic communication and supports the creation of binder-free nanocomposite electrodes on conductive substrates.
Resolving the structure of VO·HO and Mo-substituted VO·HO.
Acta Crystallogr B Struct Sci Cryst Eng Mater
August 2022
Vanadate compounds, such as VO·HO, are of high interest due to their versatile applications as electrode material for metal-ion batteries. In particular, VO·HO can insert different ions such as Li, Na, K, Mg and Zn. In that case, well resolved crystal structure data, such as crystal unit-cell parameters and atom positions, are needed in order to determine the structural information of the inserted ions in the VO·HO structure.
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