Pascal Roussel
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View article: Investigating reduction and oxidation of La<sub>0.72</sub>Sr<sub>0.18</sub>Fe<sub>0.9</sub>Ni<sub>0.1</sub>O<sub>3–</sub> <i> <sub>δ</sub> </i> as a Co-free perovskite electrode for symmetrical solid oxide cells
Investigating reduction and oxidation of La<sub>0.72</sub>Sr<sub>0.18</sub>Fe<sub>0.9</sub>Ni<sub>0.1</sub>O<sub>3–</sub> <i> <sub>δ</sub> </i> as a Co-free perovskite electrode for symmetrical solid oxide cells Open
Iron-based perovskites are of increasing interest for applications in symmetrical reversible solid oxide cells used for hydrogen production via steam electrolysis and power generation in a fuel cell configuration. We synthesize La 0.72 Sr …
View article: Upcycling Waste Polycarbonate into <i>N,N</i>’-Diphenylethylurea: A Hands-On Experiment for Undergraduate Chemistry Laboratories
Upcycling Waste Polycarbonate into <i>N,N</i>’-Diphenylethylurea: A Hands-On Experiment for Undergraduate Chemistry Laboratories Open
International audience
View article: Epitaxial 2D HfSe2 Semiconductor/TaSe2 Metal van der Waals Heterostructure
Epitaxial 2D HfSe2 Semiconductor/TaSe2 Metal van der Waals Heterostructure Open
International audience
View article: The Unexpected Role of Fluorine in the Band Gap Narrowing of Silver Niobium and Tantalum Pyrochlore Oxyfluorides
The Unexpected Role of Fluorine in the Band Gap Narrowing of Silver Niobium and Tantalum Pyrochlore Oxyfluorides Open
Mixed anion compounds have attracted growing interest in solid-state chemistry as a way to tailor physical properties. In this work, we synthesized new silver niobium and tantalum pyrochlore oxyfluorides by an ion-exchange reaction from Na…
View article: Thickness Dependence in Phase Formation and Properties of TaSe<sub>2</sub> Layers Grown on GaP(111)<sub><i>B</i></sub>
Thickness Dependence in Phase Formation and Properties of TaSe<sub>2</sub> Layers Grown on GaP(111)<sub><i>B</i></sub> Open
The effect of growth temperature and subsequent annealing on the epitaxy of both single- and few-layer TaSe2 on Se-terminated GaP(111)B substrates is investigated. The selective growth of the 1T and 1H phases i…
View article: The electrochemical performance of Ta2O5 thin films in ionic liquid and ionogel electrolytes
The electrochemical performance of Ta2O5 thin films in ionic liquid and ionogel electrolytes Open
View article: Expression of concern: Construction of desert rose flower-shaped NiFe LDH-Ni<sub>3</sub>S<sub>2</sub> heterostructures <i>via</i> seawater corrosion engineering for efficient water-urea splitting and seawater utilization
Expression of concern: Construction of desert rose flower-shaped NiFe LDH-Ni<sub>3</sub>S<sub>2</sub> heterostructures <i>via</i> seawater corrosion engineering for efficient water-urea splitting and seawater utilization Open
Expression of concern for ‘Construction of desert rose flower-shaped NiFe LDH-Ni 3 S 2 heterostructures via seawater corrosion engineering for efficient water-urea splitting and seawater utilization’ by Zhao-Hui Zhang et al. , J. Mater. Ch…
View article: In-depth investigation of the evolution of microstructure and its influence on the mechanical properties of medium-phosphorus electroless nickel coatings after thermomechanical treatments
In-depth investigation of the evolution of microstructure and its influence on the mechanical properties of medium-phosphorus electroless nickel coatings after thermomechanical treatments Open
View article: Tunable TiO <sub>2</sub> ‐Heterophase Junctions for Studying and Enhancing Photocatalytic H <sub>2</sub> Production Under Visible Light
Tunable TiO <sub>2</sub> ‐Heterophase Junctions for Studying and Enhancing Photocatalytic H <sub>2</sub> Production Under Visible Light Open
Photocatalytic performance of titanium dioxide under visible light was optimized by preparing heterophase compounds (containing two or more phases) by hydrolysis method using TiCl 4 as a precursor with different concentrations (0.5, 0.7, 1…
View article: Thermal characterization of Ge-rich GST thin films for phase change memories by Raman thermometry
Thermal characterization of Ge-rich GST thin films for phase change memories by Raman thermometry Open
Doped GeSbTe (GST)-based phase change materials are of growing interest due to their ability to enable high-temperature data retention for embedded memory applications. This functionality is achieved through Ge enrichment and addition of d…
View article: Rigidity‐Driven Structural Isomers in the NaCl–Ga<sub>2</sub>S<sub>3</sub> System: Implications for Energy Storage
Rigidity‐Driven Structural Isomers in the NaCl–Ga<sub>2</sub>S<sub>3</sub> System: Implications for Energy Storage Open
Alternative energy sources require the search for innovative materials with promising functionalities. Systems with unusual chemical properties represent an insufficiently explored domain, concealing unexpected features. Using diffraction …
View article: Catalytic Reactivity Assessment of AgM and CuM (M = Cr, Fe) Catalysts for Dry Reforming of Methane Process with CO2
Catalytic Reactivity Assessment of AgM and CuM (M = Cr, Fe) Catalysts for Dry Reforming of Methane Process with CO2 Open
CuM and AgM (M = Cr, Fe) catalysts were synthesized, characterized, and evaluated in methane reforming with CO2 with and without pretreatment under a H2 atmosphere. Their textural and structural characteristics were evaluated using various…
View article: 3D/2D heterostructure:epitaxial growth of WSe2 on GaP(111)B
3D/2D heterostructure:epitaxial growth of WSe2 on GaP(111)B Open
Among the semiconducting Transition Metals Dichalcogenides (TMDs), WSe2 appears particularly interesting due to large spin-orbit coupling and spin-splitting in the K valley [1] as well as a high carrier mobility. MBE has demonstrated valua…
View article: Emerging Capacitive Materials for On-Chip Electronics Energy Storage Technologies
Emerging Capacitive Materials for On-Chip Electronics Energy Storage Technologies Open
Miniaturized energy storage devices, such as electrostatic nanocapacitors and electrochemical micro-supercapacitors (MSCs), are important components in on-chip energy supply systems, facilitating the development of autonomous microelectron…
View article: Electrolytic Micro‐Capacitors Based on Tantalum Films for High Voltage Applications
Electrolytic Micro‐Capacitors Based on Tantalum Films for High Voltage Applications Open
Electrolytic capacitors are known to be fast devices with very low time constant and able to deliver high power. This class of capacitors is then an interesting technology to power miniaturized embedded electronics for Internet of Things a…
View article: Ni-Ag Catalysts for Hydrogen Production through Dry Reforming of Methane: Characterization and Performance Evaluation
Ni-Ag Catalysts for Hydrogen Production through Dry Reforming of Methane: Characterization and Performance Evaluation Open
To investigate the influence of Ag and the loading of Ni species, Ni-Ag type catalysts were synthesized with varying Ni/Ag ratios (1, 1.5 and 2) using the coprecipitation method. The catalysts were extensively characterized using various t…
View article: High Capacitance Porous Ruthenium Nitride Films with High Rate Capability for Micro‐Supercapacitors
High Capacitance Porous Ruthenium Nitride Films with High Rate Capability for Micro‐Supercapacitors Open
The demand for high‐performance energy storage devices to power Internet of Things applications has driven intensive research on micro‐supercapacitors (MSCs). In this study, RuN films made by magnetron sputtering as an efficient electrode …
View article: Nanofeather ruthenium nitride electrodes for electrochemical capacitors
Nanofeather ruthenium nitride electrodes for electrochemical capacitors Open
View article: (In-situ) 3DED and other TEM Techniques Unravel (Ca,Sr)(Mn,Fe)O3-δ and LaxSr2-xMnO4-δ Structure-Property Relations in Redox Conditions
(In-situ) 3DED and other TEM Techniques Unravel (Ca,Sr)(Mn,Fe)O3-δ and LaxSr2-xMnO4-δ Structure-Property Relations in Redox Conditions Open
View article: Incommensurate Modulations and Perovskite Growth in LaxSr2-xMnO4−δ Affecting Solid Oxide Fuel Cell Conductivity
Incommensurate Modulations and Perovskite Growth in LaxSr2-xMnO4−δ Affecting Solid Oxide Fuel Cell Conductivity Open
Ruddlesden-Popper LaxSr2−xMnO4−δ materials are interesting symmetric solid oxide fuel cell electrodes due to their good redox stability, mixed ionic and electronic conducting behavior and thermal expansion that matches well with common ele…
View article: Regioselective and Stereoselective Synthesis of Parthenolide Analogs by Acyl Nitroso-Ene Reaction and Their Biological Evaluation against Mycobacterium tuberculosis
Regioselective and Stereoselective Synthesis of Parthenolide Analogs by Acyl Nitroso-Ene Reaction and Their Biological Evaluation against Mycobacterium tuberculosis Open
Historically, natural products have played a major role in the development of antibiotics. Their complex chemical structures and high polarity give them advantages in the drug discovery process. In the broad range of natural products, sesq…
View article: CCDC 2226330: Experimental Crystal Structure Determination
CCDC 2226330: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CSD 2247597: Experimental Crystal Structure Determination
CSD 2247597: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2247599: Experimental Crystal Structure Determination
CSD 2247599: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2245835: Experimental Crystal Structure Determination
CSD 2245835: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2247595: Experimental Crystal Structure Determination
CSD 2247595: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Designing Visible-Light Photoactive Thioapatites Using Thiovanadate Groups: The Ba<sub>5</sub>(VO<sub>4−α</sub>S<sub>α</sub>)<sub>3</sub>X (X = F, Cl, I) Phases
Designing Visible-Light Photoactive Thioapatites Using Thiovanadate Groups: The Ba<sub>5</sub>(VO<sub>4−α</sub>S<sub>α</sub>)<sub>3</sub>X (X = F, Cl, I) Phases Open
The new thioapatite Ba5(VO4-αSα)3X (X = F, Cl, I) series of compounds was prepared and characterized. Compared to known apatite phases built from unconnected vanadate VO4 groups separa…
View article: CCDC 2264620: Experimental Crystal Structure Determination
CCDC 2264620: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2264621: Experimental Crystal Structure Determination
CCDC 2264621: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Low Carrier Effective Masses in Photoactive Sr<sub>2</sub>Sb<sub>2</sub>O<sub>2</sub><i>Q</i><sub>3</sub> (<i>Q</i> = S, Se): The Role of the Lone Pair
Low Carrier Effective Masses in Photoactive Sr<sub>2</sub>Sb<sub>2</sub>O<sub>2</sub><i>Q</i><sub>3</sub> (<i>Q</i> = S, Se): The Role of the Lone Pair Open
The crystal structure, electronic properties, photocatalytic activity, and photocurrent response of a new antimony oxysulfide Sr2Sb2O2S3 and its oxyselenide analogue Sr2Sb2O2Se3 are presented. Both oxychalcogenides contain heteroleptic SbO…