-(3)New research confirms how lithium-rich cathode materials for high-energy electric vehicle batteries store charge at high temperatures

(3)New research confirms how lithium-rich cathode materials for high-energy electric vehicle batteries store charge at high temperatures
author:enerbyte source:本站 click382 Release date: 2023-10-26 09:29:04
abstract:
Researchers led by WMG at the University of Warwick between the UK and the United States conducted operational X-ray studies to accurately quantify the types of magnesium and oxygen under high pressure. They demonstrated how X-ray beams irreversibly drive highly oxidized magnesium (Mn7+) to ir...

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Researchers led by WMG at the University of Warwick between the UK and the United States conducted operational X-ray studies to accurately quantify the types of magnesium and oxygen under high pressure. They demonstrated how X-ray beams irreversibly drive highly oxidized magnesium (Mn7+) to irreversibly adsorb oxygen into other materials.

However, by conducting careful X-ray studies, beam damage can be avoided, and trace amounts of Mn7+can only be observed during battery cycling when charging in the cathode with excess lithium.

Professor Louis Piper of WMG at Warwick University explained:

We have finally solved the problem of oxygen rather than metal redox driving higher capacity, which means we can now design better strategies to improve the cycling and performance of such materials

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