A high-stability biphasic layered cathode for sodium-ion batteries
Yue Liang, Hang Xu, Kezhu Jiang, Jingjing Bian, Shaohua Guo, Haoshen Zhou
Abstract
A novel biphasic layered Na0.62Ni0.33Mn0.62Sb0.05O2 cathode is introduced which can be easily synthesized via a solid-state reaction method. Compared with its monophasic counterpart Na0.67Ni0.33Mn0.67O2, biphasic Na0.62Ni0.33Mn0.62Sb0.05O2 displays a smoother (dis)charge profile, superior rate capability along with splendid cycling performance. Structural and kinetic studies respectively demonstrate extremely small volume strain and rapid charge transfer during the electrochemical process.
Topics & Concepts
ElectrochemistryCathodeMaterials scienceSodiumIonAnalytical Chemistry (journal)Volume expansionChemistryElectrodePhysical chemistryMetallurgyChromatographyInternal medicineOrganic chemistryMedicineAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesSupercapacitor Materials and Fabrication