A5078578287- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Graphene research and applications
Qatar University
2020-2021
Lithium-rich layered oxide materials are considered as potential cathode for future high-performance lithium-ion batteries (LIBs) owing to their high operating voltage and relatively specific capacity. However, perceptible issues such poor rate performance, capacity retention, degradation during cycling need be improved before the successful commercialization of material. In this report, zirconia coated Li1.2Ni0.16Mn0.56Co0.08O2 (NMC) (where ZrO2 = 1.0, 1.5 2.0 wt%) synthesized using a...
LiNi0.5Mn1.5O4 with a high-voltage spinel structure is potential cathode material for high-energy lithium-ion batteries (LIBs). Y2O3 coated quasi-spheres of covered in graphene (LNMO-YO-G) have been synthesized by microwave-assisted chemical co-precipitation technique. The coating and subsequent wrapping nanosheets does not modify the bulk inhibits production undesirable phases. Thermal analysis indicates that developed materials demonstrate good thermal stability. exhibits an initial...
Abstract Lithium-rich layered oxides (LLOs) such as Li 1.2 Ni 0.13 Mn 0.54 Co O 2 are suitable cathode materials for future lithium-ion batteries (LIBs). Despite some salient advantages, like low cost, ease of fabrication, high capacity, and higher operating voltage, these suffer from cyclic stability poor capacity retention. Several different techniques have been proposed to address the limitations associated with LLOs. Herein, we report surface modification by utilizing cheap readily...
Lithium rich layered oxides (LLO) are one of the potential candidates for Li-ion batteries. however, LLO materials have serious drawbacks such as poor cyclic stability, rate capability and rapid voltage decay upon cycling, which needs to be overcome in order successfully commercialize them. In this work, SiO 2 coating is employed (1.0%, 1.5%, 2.0 wt. %) combat these issues. Li 1.2 Ni 0.13 Mn 0.54 Co O synthesis was carried out by sol-gel process done using dry ball milling method. XRD...
Lithium ion batteries (LIBs) are attractive for energy storage application. In this regard, lithium rich layered oxides (LLOs), considered viable cathodes due to their tempting properties such as lower production cost, faster manufacturing process, excellent reversible capacity, and better electrochemical performance at high voltages. Despite these properties, LLOs lack in cyclic stability inferior capacity retention. This study proposes a surface modification technique overcome the...