Oliver Clemens
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View article: Floating zone growth of large tetragonal Ruddlesden-Popper bilayer nickelate YySr3−yNi2−xAlxO7−δ single crystals
Floating zone growth of large tetragonal Ruddlesden-Popper bilayer nickelate YySr3−yNi2−xAlxO7−δ single crystals Open
The discovery of superconductivity under high pressure in Ruddlesden-Popper (RP) type phase bilayer $${{{{\rm{La}}}}}_{3}{{{{\rm{Ni}}}}}_{2}^{2.5+}{{{{\rm{O}}}}}_{7}$$ and trilayer $${{{{\rm{La}}}}}_{4}{{{{\rm{Ni}}}}}_{3…
View article: Mechanochemical Synthesis of MgV<sub>2</sub>O<sub>4</sub>: Reactivity Pathways Driven by Milling Energy and Precursors
Mechanochemical Synthesis of MgV<sub>2</sub>O<sub>4</sub>: Reactivity Pathways Driven by Milling Energy and Precursors Open
Magnesium spinels such as MgAl2O4 and MgFe2O4 have been widely explored for energy storage and sensing applications, but MgV2O4 remains relatively unexplored despite its pro…
View article: Structural and electrochemical behaviour of bilayer manganite LaSr2Mn2O6.96 cathode for all-solid-state fluoride ion batteries
Structural and electrochemical behaviour of bilayer manganite LaSr2Mn2O6.96 cathode for all-solid-state fluoride ion batteries Open
View article: Gas Evolution in Ruddlesden-Popper-type Intercalation Cathodes in All-Solid-State Fluoride-Ion-Batteries: Implications on Battery Performance and Synthesis of Highly Oxidized Oxyfluorides
Gas Evolution in Ruddlesden-Popper-type Intercalation Cathodes in All-Solid-State Fluoride-Ion-Batteries: Implications on Battery Performance and Synthesis of Highly Oxidized Oxyfluorides Open
In this work, we report the gas evolution behavior of two common intercalation-based cathode materials for fluoride-ion-batteries (La2NiO4 and La2CoO4) by chemical fluorination and electrochemical fluorination, as well as the thermal stabi…
View article: Solid-state formation reactions of Ba0.82Ca0.18Zr0.08Ti0.92O3 piezoceramics
Solid-state formation reactions of Ba0.82Ca0.18Zr0.08Ti0.92O3 piezoceramics Open
The lead-free piezoceramic (Ba,Ca)(Zr,Ti)O3 system has been a focus of scientific research due to its outstanding electromechanical properties, rivaling those of conventional lead-based materials. However, poor reproducibility and unwanted…
View article: Anion Exchange in LaBaInO3F2: Structural and Optical Effects of Low-Temperature Topochemical Modification
Anion Exchange in LaBaInO3F2: Structural and Optical Effects of Low-Temperature Topochemical Modification Open
We present a comprehensive investigation of topochemical modification in the Ruddlesden–Popper-type (RP) indium-based oxyfluoride LaBaInO3F2, using low-temperature sodium hydride (NaH) treatment. By systematically varying NaH equivalents, …
View article: Structural and Electrochemical behaviour of Bilayer Manganite LaSr2Mn2O6.96 Cathode for all-solid-state Fluoride Ion Batteries
Structural and Electrochemical behaviour of Bilayer Manganite LaSr2Mn2O6.96 Cathode for all-solid-state Fluoride Ion Batteries Open
In this study, we explore the potential of the RP-type bilayer manganite LaSr2Mn2O6.96 as an intercalation-based cathode material for all-solid-state fluoride ion batteries (FIBs). Structural changes of LaSr2Mn2O6.96 during fluoride interc…
View article: High Capacity Intercalation Based Anodes for Solid-State Fluoride-Ion-Batteries Enabled by the Substitution of Conductive Carbon by Metallic Copper
High Capacity Intercalation Based Anodes for Solid-State Fluoride-Ion-Batteries Enabled by the Substitution of Conductive Carbon by Metallic Copper Open
Fluoride-Ion-Batteries are a promising battery technology to achieve high energy densities exceeding those of traditional lithium-ion batteries. Reports on intercalation-based electrode materials for Fluoride-Ion-Batteries have mostly focu…
View article: Revealing an Intercalation Nature of High‐Capacity Conversion Cathode Materials for Fluoride‐Ion Batteries by Operando Studies
Revealing an Intercalation Nature of High‐Capacity Conversion Cathode Materials for Fluoride‐Ion Batteries by Operando Studies Open
To improve the performance of high‐energy‐density electrode materials for all‐solid‐state fluoride‐ion batteries (ASSFIBs), it is important to understand the structure and phase evolution during operation, which is closely correlated to ca…
View article: Toward Carbon‐Free Cathodes for Fluoride Ion Batteries: Deconvoluting Effects of Active Material and Conductive Additive on Charging and Cyclic Stability
Toward Carbon‐Free Cathodes for Fluoride Ion Batteries: Deconvoluting Effects of Active Material and Conductive Additive on Charging and Cyclic Stability Open
In this study, conductive, fluorine and antimony codoped tin oxide nanoparticles (FATO‐NPs) are highlighted as a possible alternative for conductive carbon additives in fluoride ion batteries, successfully circumventing oxidative side reac…
View article: Synthesis and Optical Properties of Single‐Crystalline Phosphors Gd<sub>3</sub>In<sub>2</sub>Ga<sub>3</sub>O<sub>12</sub>:RE<sup>3+</sup> (RE = Nd<sup>3+</sup> and Ho<sup>3+</sup>) Grown via the Optical Float Zone Method
Synthesis and Optical Properties of Single‐Crystalline Phosphors Gd<sub>3</sub>In<sub>2</sub>Ga<sub>3</sub>O<sub>12</sub>:RE<sup>3+</sup> (RE = Nd<sup>3+</sup> and Ho<sup>3+</sup>) Grown via the Optical Float Zone Method Open
The continuous development of innovative optical materials with lanthanoid ions as activators has emerged as a modern sector of materials chemistry. The experience with the fabrication of single crystals with the optical float zone has mot…
View article: Influence of In‐Doping on the Structure and Electrochemical Performance of Compositionally Complex Garnet‐Type Solid Electrolytes
Influence of In‐Doping on the Structure and Electrochemical Performance of Compositionally Complex Garnet‐Type Solid Electrolytes Open
The electrochemical instability of electrode active materials as well as the flammability of the organic liquid electrolytes in Li‐ion batteries pose challenges for their safety and long cycle life. Solid electrolytes (SEs) that exhibit hi…
View article: Direct Recycling of All‐Solid‐State Batteries with a Halide Solid Electrolyte via Water‐Based Separation: Interactions of Electrode Materials in Aqueous Li <sub>3</sub> InCl <sub>6</sub> Solutions
Direct Recycling of All‐Solid‐State Batteries with a Halide Solid Electrolyte via Water‐Based Separation: Interactions of Electrode Materials in Aqueous Li <sub>3</sub> InCl <sub>6</sub> Solutions Open
Despite extensive research in the field of all‐solid‐state batteries, there has been limited attention to their recycling, which is crucial for achieving long‐term sustainability. Different electrolyte and electrode combinations must be co…
View article: Synthesis and Optical Properties of Single Crystalline Phosphors Gd3In2Ga3O12:RE3+ (RE = Nd3+ and Ho3+) Grown via the Optical Float Zone Method
Synthesis and Optical Properties of Single Crystalline Phosphors Gd3In2Ga3O12:RE3+ (RE = Nd3+ and Ho3+) Grown via the Optical Float Zone Method Open
The continuous development of innovative optical materials with lanthanoid ions as activators has emerged as a modern sector of materials chemistry. Our experience with the fabrication of single crystals with the optical float zone has mot…
View article: Synthesis and Optical Properties of Single Crystalline Phosphors Gd3In2Ga3O12:RE3+ (RE = Nd3+ and Ho3+) Grown via the Optical Float Zone Method
Synthesis and Optical Properties of Single Crystalline Phosphors Gd3In2Ga3O12:RE3+ (RE = Nd3+ and Ho3+) Grown via the Optical Float Zone Method Open
The continuous development of innovative optical materials with lanthanoid ions as activators has emerged as a modern sector of materials chemistry. Our experience with the fabrication of single crystals with the optical float zone has mot…
View article: Direct Recycling of All-Solid-State Batteries with a Halide Solid Electrolyte via Water-based Separation: Interactions of Electrode Materials in Aqueous Li3InCl6 Solutions
Direct Recycling of All-Solid-State Batteries with a Halide Solid Electrolyte via Water-based Separation: Interactions of Electrode Materials in Aqueous Li3InCl6 Solutions Open
Despite extensive research in the field of all-solid-state batteries, there has been limited attention to their recycling, which is crucial for achieving long-term sustainability. Different electrolyte and electrode combinations must be co…
View article: Solid-state formation reactions of (Ba,Ca)(Zr,Ti)O3 piezoceramics
Solid-state formation reactions of (Ba,Ca)(Zr,Ti)O3 piezoceramics Open
The lead-free piezoceramic (Ba,Ca)(Zr,Ti)O3 system has been a focus of scientific research due to its outstanding electromechanical properties, rivaling those of conventional lead-based materials. However, poor reproducibility and unwanted…
View article: Fluoride Ion Transport and Phase Evolution in the Cathode Material LaSrMnO4 within All-Solid-State Fluoride Ion Batteries
Fluoride Ion Transport and Phase Evolution in the Cathode Material LaSrMnO4 within All-Solid-State Fluoride Ion Batteries Open
Fluoride ion batteries (FIBs) are an emerging energy storage technology with high gravimetrical and volumetric energy densities along with the potential for material sustainability. In this study, we increase the fundamental understanding …
View article: Towards carbon-free cathodes for fluoride ion batteries: deconvoluting effects of active material and conductive additive on charging and cyclic stability
Towards carbon-free cathodes for fluoride ion batteries: deconvoluting effects of active material and conductive additive on charging and cyclic stability Open
In this study, conductive, fluorine and antimony co-doped tin oxide nanoparticles (FATO-NPs) are highlighted as a possible alternative for conductive carbon additives in fluoride ion batteries, successfully circumventing oxidative side rea…
View article: Revealing a novel intercalation nature of high-capacity conversion cathode materials for Fluoride-Ion Batteries by Operando Studies
Revealing a novel intercalation nature of high-capacity conversion cathode materials for Fluoride-Ion Batteries by Operando Studies Open
To rationalize and improve the performance of high energy density electrode materials for all-solid-state fluoride ion batteries and abstract the increasing demands of energy storage, it is important to gain a fundamental understanding of …
View article: Towards Recycling of All‐Solid‐State Batteries with Argyrodite Sulfide Electrolytes: Insights into Electrolyte and Electrode Degradation in Dissolution‐Based Separation Processes
Towards Recycling of All‐Solid‐State Batteries with Argyrodite Sulfide Electrolytes: Insights into Electrolyte and Electrode Degradation in Dissolution‐Based Separation Processes Open
All‐solid‐state Li‐ion batteries (ASSBs) represent a promising leap forward in battery technology, rapidly advancing in development. Among the various solid electrolytes, argyrodite thiophosphates Li 6 PS 5 X (X=Cl, Br, I) stand out due to…
View article: Complex Influence of Stack Pressure on BiF <sub>3</sub> Cathode Materials in All-Solid-State Fluoride-Ion Batteries
Complex Influence of Stack Pressure on BiF <sub>3</sub> Cathode Materials in All-Solid-State Fluoride-Ion Batteries Open
Among all the alternative battery systems beyond lithium-ion batteries (LIBs), all-solid-state fluoride ion batteries (ASSFIBs) are particularly promising due to their high theoretical energy density, thermal stability, and recent advancem…
View article: One – step synthesis of glass ceramic Li6PS5Cl1-xIx solid electrolytes for all-solid-state batteries
One – step synthesis of glass ceramic Li6PS5Cl1-xIx solid electrolytes for all-solid-state batteries Open
View article: Gas evolution in Ruddlesden–Popper-type intercalation cathodes in all-solid-state fluoride-ion-batteries: implications on battery performance and synthesis of highly oxidized oxyfluorides
Gas evolution in Ruddlesden–Popper-type intercalation cathodes in all-solid-state fluoride-ion-batteries: implications on battery performance and synthesis of highly oxidized oxyfluorides Open
Gas evolution of Ruddlesden–Popper oxides upon fluorination is studied: chemical fluorination with AgF and electrochemical fluorination and reveals oxygen release upon chemical fluorination at 300 °C but not in electrochemical fluorination…
View article: Realization of a classical Ruddlesden Popper type bilayer nickelate in Sr3Ni2−xAlxO7−δ with unusual Ni4+
Realization of a classical Ruddlesden Popper type bilayer nickelate in Sr3Ni2−xAlxO7−δ with unusual Ni4+ Open
The discovery of 80 K superconductivity in bilayer La 3 Ni 2 O 7 at pressures greater than 14 GPa presents a unique opportunity to study a novel class of high-temperature superconductors. Therefore, other bilayer nickelates following the c…
View article: Synthesis and optical properties of LaSrGaO4:RE3+ (RE = Sm, Eu, Ho) single crystals via optical float zone method
Synthesis and optical properties of LaSrGaO4:RE3+ (RE = Sm, Eu, Ho) single crystals via optical float zone method Open
The advancement of synthesis of materials with luminescence properties of lanthanoid ions in various single crystalline host compounds with low phonon energies has facilitated the optimization of numerous materials to meet the specific opt…
View article: “Hexagonal” Perovskites: From Stacking Sequence to Space Group Symmetry and New Opportunities
“Hexagonal” Perovskites: From Stacking Sequence to Space Group Symmetry and New Opportunities Open
The term “hexagonal perovskite” has been widely used in literature to discuss the structure of perovskite-type compounds with composition ABX3–y with partial h-type stacking of AX3 layers. Though the local surrounding of these AX3 layers r…
View article: Review of the opportunities and limitations for powder-based high-throughput solid-state processing of advanced functional ceramics
Review of the opportunities and limitations for powder-based high-throughput solid-state processing of advanced functional ceramics Open
The production of advanced functional ceramics from dry raw powders through the solid-state reaction method is a highly industrially relevant process used by numerous researchers and industries around the world. Functional ceramics enable …
View article: Influence of B-site variation on the bifunctional performance of LaFexCo1-xO3 for Zn-air battery
Influence of B-site variation on the bifunctional performance of LaFexCo1-xO3 for Zn-air battery Open
Perovskites offer great promise as bifunctional catalyst in Zn-air batteries or reversible fuel cells. While there are optimization efforts for either oxygen reduction reaction (ORR) or oxygen evolution reaction (OER), there is a lack of i…
View article: “Hexagonal” Perovskites – From Stacking Sequence to Space Group Symmetry and New Opportunities
“Hexagonal” Perovskites – From Stacking Sequence to Space Group Symmetry and New Opportunities Open
The term hexagonal perovskite has been widely used in literature to discuss the structure of perovskite-type compounds with composition ABX3-y with partial h-type stacking of AX3 layers. Though the local surrounding of these AX3 layers res…