Improving the long-term electrochemical performances of Li-rich cathode material by encapsulating a three-in-one nanolayer
Zhenbo Wang, Yanfeng Yin, Guanjie He, Huiling Zhao, Ying Bai
Abstract
-doping collaborates with oxygen vacancies to stabilize lattice oxygen and restrain oxygen evolution from the bulk active cathode. The optimized LMNCO@LBPO material exhibits a superior capacity retention of 78.6%, higher than that of the pristine sample (49.3%), with the mitigated voltage fading of 0.73 mV per cycle after 500 cycles at 1 C. This study opens up an avenue for the surface modification to the electrochemical properties and perspective application of Li-rich cathodes in high-performance LIBs.
Topics & Concepts
Materials scienceCathodeElectrolyteElectrochemistryChemical engineeringNanotechnologyDopingElectrodeOptoelectronicsElectrical engineeringChemistryEngineeringPhysical chemistryAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesSupercapacitor Materials and Fabrication