On the functionality of the polypyrrole nanostructures for surface modification of Co-free Li-rich layered oxide cathode applied in lithium-ion batteries
Co-free Li-rich manganese nickel oxide (LMNO) materials are emerging as an up-and-
coming candidate for high-energy–density cathodes. However, they suffer from severe
cycling capacity fading and poor performance rates. Herein, the surface functionalization of
an LMNO cathode is designed by polypyrrole (PPy) nanostructure coating. We found that
PPy nanoparticles@ LMNO cathode exhibits high-capacity retention and enhanced rate
capabilities, delivering a discharge capacity as high as 191 mAh g− 1, with capacity …
coming candidate for high-energy–density cathodes. However, they suffer from severe
cycling capacity fading and poor performance rates. Herein, the surface functionalization of
an LMNO cathode is designed by polypyrrole (PPy) nanostructure coating. We found that
PPy nanoparticles@ LMNO cathode exhibits high-capacity retention and enhanced rate
capabilities, delivering a discharge capacity as high as 191 mAh g− 1, with capacity …
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