Work

Integrated Lithium-Rich yLi2MnO3∙(1-y)LiNi1/3Co1/3Mn1/3O2 Layered Cathode Nanomaterials for Lithium-Ion Batteries

Year: 2025

Type: article

Abstract: Integrated Li- and Mn-rich layered cathodes yLi2MnO3∙(1-y)LiMO2 (M = Mn, Co, and Ni) have shown their ability to deliver specific capacities close to 300 mAh g−1, but their significant drawbacks are capacity fading and voltage decay during cycling. In this study, new stoichiometric high-voltage Li-rich oxides with y = 0.0, 0.3, and 0.5 are synthesized in identical conditions using a sol–gel method. These compositions were analyzed to determine their optimal configuration and to understand their extraordinary behavior. Their nanostructural properties were investigated using XRD and Raman spectroscopy, while the morphology and grain-size distribution of the samples were characterized by BET, SEM and HRTEM analyses. The electrochemical performances of the integrated Li- and Mn-rich compounds were evaluated through galvanostatic cycling and electrochemical impedance spectroscopy. The best cathode material 0.5Li2MnO3∙0.5LiNi1/3Co1/3Mn1/3O2 had a capacity retention of 83.6% after 100 cycles in the potential range 2.0–4.8 V vs. Li+/Li.

Source: International Journal of Molecular Sciences

DOI: 10.3390/ijms26031346

Authors: Ashraf E. Abdel-Ghany, Rasha S. El-Tawil, Ahmed M. Hashem, Alain Mauger, Christian M. Julien

Institutions: National Research Centre, Centre National de la Recherche Scientifique, Sorbonne Université, Institut de minéralogie, de physique des matériaux et de cosmochimie

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,499