A5048208257- Metal and Thin Film Mechanics
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Diamond and Carbon-based Materials Research
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Plasma Diagnostics and Applications
- Concrete and Cement Materials Research
- Ferroelectric and Piezoelectric Materials
- Advanced Battery Technologies Research
- Magnesium Oxide Properties and Applications
- Recycling and utilization of industrial and municipal waste in materials production
- ZnO doping and properties
- Multiferroics and related materials
- Copper Interconnects and Reliability
- Chemical Synthesis and Characterization
- Magnetic and transport properties of perovskites and related materials
- Microwave Dielectric Ceramics Synthesis
- Ion-surface interactions and analysis
- Perovskite Materials and Applications
- Recycling and Waste Management Techniques
- Advanced ceramic materials synthesis
- Advanced battery technologies research
- Dielectric properties of ceramics
Université Mohammed VI Polytechnique
2017-2025
ROWO Coating (Germany)
2022
Polytechnic University
2022
Shanghai Institute of Ceramics
2013-2015
Sulzer (Germany)
2008-2009
RWTH Aachen University
2006-2008
CemeCon (Germany)
2007-2008
Linköping University
2001-2006
Abstract High-capacity Ni-rich layered oxides are promising cathode materials for secondary lithium-based battery systems. However, their structural instability detrimentally affects the performance during cell cycling. Here, we report an Al/Zr co-doped single-crystalline LiNi 0.88 Co 0.09 Mn 0.03 O 2 (SNCM) material to circumvent issue. We found that soluble Al ions adequately incorporated in SNCM lattice while less Zr prone aggregate outer surface layer. The synergistic effect of co-doping...
Abstract Considering the natural abundance and low cost of sodium resources, sodium‐ion batteries (SIBs) have received much attention for large‐scale electrochemical energy storage. However, smart structure design strategies good mechanistic understanding are required to enable advanced SIBs with high density. In recent years, exploration cathode, anode, electrolyte materials, as well diagnostics been extensively carried out. This review mainly focuses on challenging problems attractive...
Low-cost and efficient oxygen reduction reaction (ORR)/oxygen evolution (OER) bifunctional electrocatalysts are vital for the applications of rechargeable Zn–air batteries (ZABs). Given high catalytic activity single-atom catalysts (SACs), preparing SACs on a large scale ZABs is desirable but remains challenging. Herein, in situ formation Fe–N–C plate wood-based porous carbon achieved via facile Lewis acid pretreatment carbonization process. FeCl3 cell wall wood not only produces abundant...
Metallic Zn is a preferred anode material for rechargeable aqueous batteries towards smart grid and renewable energy storage. Understanding how the metal nucleates grows at critical challenging step to achieve full reversibility of battery chemistry, especially under fast-charging conditions. Here, by combining in situ optical imaging theoretical modeling, we uncover parameters governing electrodeposition stability metallic electrode, that is, competition among crystallographic...
The ion to neutral ratio of the sputtered material have been studied for high power pulsed magnetron sputtering and compared with a continuous direct current (dc) discharge using same experimental setup except source. Optical emission spectroscopy (OES) was used study optical from plasma through side window. shown be dominated by metal ions. distribution ionized states clearly differed excited states, we suggest presence hot dense surrounded cooler plasma. Sputtered close target transported...
We have synthesized Ta thin films on Si substrates placed along a wall of 2-cm-deep and 1-cm-wide trench, using both mostly neutral flux by conventional dc magnetron sputtering (dcMS) ionized high-power pulsed (HPPMS). Structure the grown was evaluated scanning electron microscopy, transmission atomic force microscopy. The film HPPMS has smooth surface dense crystalline structure with grains oriented perpendicular to substrate surface, whereas dcMS exhibits rough pores between grains, an...
Abstract Lithium‐ion batteries (LIBs) based on LiNi x Co y Mn 1‐x‐y O 2 (NCM) cathode materials have been widely commercialized, because of their high energy density, favorable rate performance, and relatively low cost. However, with increased Ni content to further increase cycling stability deteriorates dramatically thus fails meet the commercial application requirements. The artificial cathode‐electrolyte‐interphase (CEI) is a promising approach solve this problem. Here, robust CEI...
LiCoO2 (LCO) is widely applied in today's rechargeable battery markets for consumer electronic devices. However, LCO operations at high voltage are hindered by accelerated structure degradation and electrode/electrolyte interface decomposition. To overcome these challenges, co-modified (defined as CB-Mg-LCO) that couples pillar structures with shielding successfully synthesized achieving high-energy-density structurally stable cathode material. Benefitting from the "Mg-pillar" effect,...
Integrating solid-state electrolyte (SSE) into Li-metal anodes has demonstrated great promise to unleash the high energy density of rechargeable batteries. However, fabricating a highly cyclable SSE/Li-metal anode remains major challenge because densification SSE is usually incompatible with reactive Li metal. Here, liquid-metal-derived hybrid solid (HSE) proposed, and facile transfer technology construct an artificial HSE on metal reported. By tuning wettability substrates, electron-...
In wastewater treatment, the application of ceramic membranes has gained significant attention due to their potential for highly effective filtration. These are typically produced using methods such as spin coating, dip-coating, and spray coating. However, these techniques have limitations when applied large-scale industrial applications high cost, time consuming process, difficulty control. Moreover, obtaining a complete uniform coating requires several attempts. This research demonstrates...
The influence of the removal carbonates on ceramic properties made Moroccan red clay as a main material and tea waste pore-forming agent, has been investigated. ATD-TG, dilatometry, dimensional changes, weight loss, water absorption, open porosity, bulk density, flexural indirect tensile strengths were assessed at different firing temperatures within range 900-1150 ◦C. SEM was used to evaluate microstructures fired samples, while XRD study phase evolution. At varying temperatures, materials...
The effect of the high pulse current and duty cycle on deposition rate in power pulsed magnetron sputtering (HPPMS) is investigated. Using a Cr target same average current, rates are compared to dc (dcMS) rates. It found that for peak density ITpd up 570mAcm−2, HPPMS dcMS equal. For ITpd>570mAcm−2, optical emission spectroscopy shows pronounced increase Cr+∕Cr0 signal ratio. In addition, loss rate, which attributed self-sputtering, observed.
We demonstrate the creation of high-density plasma in a pulsed magnetron discharge. A 2.4 MW pulse, 100 μs wide, with repetition frequency 50 Hz is applied to planar discharge study temporal behavior parameters: electron energy distribution function, density, and average energy. The density vicinity substrate, 20 cm below cathode target, peaks at 8×1017 m−3, 127 after initiating pulse. Towards end pulse two groups electrons are present corresponding peak With disapperance high-energy group,...
High power pulsed magnetron sputtering (HPPMS) is used to deposit CrN films without external heating at different peak target currents, while the average current kept constant. Films are also grown by dc (dcMS), for reference. The plasma properties, deposition rate and morphology of investigated. analysis reveals that HPPMS provides higher fluxes ionized species (both gas sputtered) growing film, as compared with dcMS. In addition, ionic bombardment during increases, when increased. exhibit...
In this work TiOx (x > 1.8) films are grown reactively from a ceramic TiO1.8 target employing high power pulsed magnetron sputtering (HPPMS) at constant average current. The effect of the pulse on/off time configuration on and discharge characteristics as well film properties is investigated. voltage (VT) increases 480 to 650 V peak current (ITp) 2 40 A when off-time increased 200 2450 µs, while on-time kept 50 µs. This accompanied by an increase in number Ti atoms sputtered target,...