Abstract
Two classes of cathode materials have been developed for high energy density applications. The Li-rich layered oxide material with the general formula Li1+xM1-xO2 (M = Ni, Mn, Co) and the lithium manganese silicate Li2MnSiO4. Both materials have theoretical capacities higher than commercialized ones, which may give rise to higher energy density batteries.
Highlights
Driven by recent deployment of electric vehicles, researches on new lithium-ion battery technologies are constantly increasing
The use of co-precipitation synthesis allowed higher performances and a better control of its morphology (Fig.1). Such properties are desirable for the realization of high energy density electrodes
We showed by X-Ray Diffraction (XRD) that the presence of carbon-coating slows down the reactivity of Li2MnSiO4 in air
Summary
Driven by recent deployment of electric vehicles, researches on new lithium-ion battery technologies are constantly increasing. Recent developments on Li-rich layered oxides and upstream research on polyanionic lithium manganese silicate (Li2MnSiO4) have been carried out by CEA. Li-rich materials have very high practical energy densities and very high specific capacities (>250 mAh/g).
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