1 research outputs found
Controlling Surface Structure and Primary Particle Size to Enhance Performance and Reduce Gas Evolution in Lithium- and Manganese-Rich Layered Oxide Cathodes
Practical application of lithium-
and manganese-rich
layered oxide
cathodes has been hindered despite their high performance and low
cost owing to high gas evolution accompanying capacity loss even in
a conservative voltage window. Here, we control the surface structure
and primary particle size of lithium- and manganese-rich layered oxide
cathodes not only to enhance the electrochemical performance but also
to reduce gas evolution. Sulfur-coated Fm3Ì…m/R3Ì…m double
reduced surface layers and Mo doping dramatically reduce gas evolution,
which entails the improvement of electrochemical performance. With
the optimization, we prove that it is competitive enough to conventional
high-nickel cathodes in the aspects of gas evolution as well as electrochemical
performance in the conservative voltage window of 2.5–4.4 V.
Our findings provide invaluable insights on the improvement of electrochemical
performance and gas evolution properties in lithium- and manganese-rich
layered oxide cathodes