Professor Li Chao, working at ECNU, discovered that the oxygen trapping within the high-sodium P2-type layered oxide cathodes is the foremost wrongdoer for voltage degradation. Benefiting from the electron paramagnetic resonance (EPR) spectroscopy on the Regular-State Robust Magnetic Area Facility, Chinese language Academy of Sciences, they monitored the dynamics of oxygen species noticed and linked them with structural degradation. Reported within the journal Superior Power Supplies, the invention provides new perception for constructing extra steady cathodes for sodium-ion batteries – an necessary objective in enabling smaller-scale vitality storage functions and renewable vitality applied sciences.
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