A5049007689- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Advanced Battery Technologies Research
- Semiconductor materials and devices
- Electron and X-Ray Spectroscopy Techniques
- Minerals Flotation and Separation Techniques
- Interconnection Networks and Systems
- Advanced battery technologies research
- Semiconductor materials and interfaces
- Magnetic Properties and Synthesis of Ferrites
- Solar-Powered Water Purification Methods
- Water Quality Monitoring and Analysis
SINTEF
2023
Cadi Ayyad University
2019-2022
Université Mohammed VI Polytechnique
2020-2021
University of Hassan II Casablanca
2019
Rechargeable sodium-ion batteries have recently attracted renewed interest as an alternative to Li-ion for electric energy storage applications, because of the low cost and wide availability sodium resources. Thus, electrochemical community has been devoting increased attention designing new cathode materials batteries. Here we investigate P2- Na0.78Co1/2Mn1/3Ni1/6O2 a material ion The main focus is understand mechanism performance this material, especially differences observed in redox...
Manganese-based layered oxides have gained wide attention as cathode materials for sodium-ion batteries due to their cost-effectiveness and nontoxicity. Among them, Na2Mn3O7, which shows promising electrochemical properties a host material sodium ions, has been extensively investigated recently. However, the charge compensation mechanisms during battery operation are still ambiguous. Herein, we investigate electronic structure of Na2Mn3O7 using X-ray absorption spectroscopy (XAS) resonant...
The P-doped hard carbon was synthesized using carboxymethyl cellulose and phosphoric acid as the phosphorus precursors, respectively. X-ray photoelectron spectroscopy (XPS) analysis reveals that doped atoms can incorporate into framework most of them are connecting with to form P-C bonds. When used anodes in sodium ion batteries, obtained un-doped show poor electrochemical performances. results indicate further optimization synthesis process is required. However, this approach opens up new...
Layered oxide cathode materials with the general formula NaxTMO2 (TM = transition metals) have shown promises as electrode for future large-scale sodium-ion batteries. However, several challenges including capacity degradation at high voltage, phase transitions well structural sensitivity to minor changes in sodium and metal contents during synthesis process hampered their development. Herein, we report a systematic investigation of impact replacing cobalt by either manganese or nickel on...
Na x Me y O z oxides have attracted wide attention as promising cathode materials for sodium-ion batteries because of their potential high capacity and rate capability (1). The stable cycling performance, usually obtained within a low voltage range, drastically decrease when cycled at range despite the large initial charge capacity. Thus, it has been suggested that besides storing on transition metal ions, oxygen ions can also participate in compensation mechanisms which induces an loss from...
Silicon graphite anodes have emerged as promising candidates to replace conventional due their higher theoretical capacity and ability store more lithium ions. However, the significant volume expansion of silicon during lithiation delithiation cycles results in severe mechanical degradation rapid fade, limiting practical application. Additionally, realisation electrodes with high Si content are further limited by poor diffusion kinetics, resulting an insufficient rate capability performance...
The reliable application of conversion and alloying materials as high capacity electrodes in Li-ion batteries has been a mostly elusive ambition for nearly 30 years. most notable successes being the commercialisation Tin based Nexelion™ chemistry by Sony 2005, current Si SiO x anode additives today. Despite relatively narrow scope commercialised systems however, scientific literature remains vibrant on this topic, spurred allure specific capacities excess 1000mAh/g. limitations are well...
A green and friendly synthesis method was used to prepare Anatase TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> the electrochemical performances of this metal oxide as negative electrode for lithium ion batteries were studied. X-Ray diffraction analysis confirm formation Titanium Oxide with anatase type structure a small content brookite phase. The spherical shape particles is clearly highlighted using Scanning Electron Microscopy....