Source link : https://tech365.info/scandium-doping-approach-extends-sodium-ion-battery-life/
Sc doping improves the structural stability of P’2 NaMnO2 whereas sustaining cooperative Jahn-Teller distortion, which considerably improves biking stability. Credit score: Professor Shinichi Komaba from Tokyo College of Science, Japan
As a result of lithium is comparatively scarce and sodium is considerable in Earth’s crust, sodium-ion batteries are being investigated as viable, cost-effective options to the broadly used lithium-ion batteries. In these batteries, the selection of cathode materials primarily influences battery capability and stability.
Layered sodium manganese oxides (Na2/3MnO2) have attracted vital consideration lately as cathode supplies for high-capacity sodium-ion batteries with out utilizing any rare-earth metals. Nevertheless, whereas these supplies exhibit excessive preliminary capability, their fast capability fading throughout charge-discharge biking stays a big problem.
Throughout charge-discharge biking of NaMnO2 electrodes, Na+ ions are continuously inserted and extracted from the cathode materials. That is accompanied by adjustments within the oxidation states of manganese (Mn) between Mn3+ to Mn4+. When Mn3+ ions type, they distort their surrounding lattice to decrease digital vitality, a phenomenon often called Jahn-Teller distortion.
Over time, these repeated distortions result in a buildup of pressure at each atomic and particle ranges in NaMnO2, ultimately ensuing within the lack of crystallinity and…
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Author : tech365
Publish date : 2025-09-17 13:55:00
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