Reorganizing Helmholtz Adsorption Plane Enables Sodium Layered-Oxide Cathode beyond High Oxidation Limits.

Sodium layered-oxides (NaTMO) sustain severe interfacial stability issues when subjected to battery applications. Particularly at high potential, the oxidation limits including transition metal dissolution and solid electrolyte interphase reformation are intertwined upon the cathode, resulting in poor cycle ability. Herein, by rearranging the complex and structure of the Helmholtz absorption plane adjacent to NaTMO cathodes, the mechanism of constructing stable cathode/electrolyte interphase (CEI) to push up oxidation limits is clarified.

Constructing Stable Anion-Tuned Electrode/Electrolyte Interphase on High-Voltage Na V (PO ) F Cathode for Thermally-Modulated Fast-Charging Batteries.

Constructing stable electrode/electrolyte interphase with fast interfacial kinetics is vital for fast-charging batteries. Herein, we investigate the interphase that forms between a high-voltage Na V (PO ) F cathode and the electrolytes consisting of 3.0, 1.