Nature Journal Publication

Tue, 26 Nov 2019 13:46:40 +0100
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"Structural insights into the formation and voltage degradation of lithium- and manganese-rich layered oxides” Top 50 Chemistry and Materials Sciences Articles in Nature Communications: https://www.nature.com/collections/giacagiaca Although high-energy lithium- and manganese-rich layered cathode materials can deliver 30 % excess capacity compared with today’s commercially used cathodes, the so-called voltage decay has been restricting their practical application. Here, we have investigated systematically the structural and compositional dependence of manganese-rich lithium insertion compounds on the lithium content provided during synthesis and the complexity in the synthesis pathways of layered Li[Li0.2Ni0.2Mn0.6]O2 oxide. The transformation of the lithium-rich layered phase to a lithium-poor spinel phase via an intermediate lithium-containing rock-salt phase with release of lithium/oxygen was discovered during ultra-long-term cycling. Nat. Commun. 10, 5365 (2019)