3D plum candy-like NiCoMnO₄@graphene as anodes for high-performance lithium-ion batteries

Abstract

3D plum candy-like NiCoMnO4 microspheres have been prepared via ultrasonic spraying and subsequently wrapped by graphene through electrostatic self-assembly.

Boosting reaction kinetics and reversibility in Mott-Schottky VS2/MoS2 heterojunctions for enhanced lithium storage

“…Fortunately, it has been found that the Mott-Schottky heterojunctions of metal and semiconductor can generate an oriented and stronger built-in electric field, and meantime significantly boost the transfer kinetics of electrons and ions. On the other hand, it is reported that the V 4+ in metallic VS 2 possesses a smaller radius and a higher polarity compared with Mo 4+ in MoS 2 , which is more conductive to anchoring the polysulfides in Li-sulfur batteries with favorable reversibility [20][21][22][23][24]. Nevertheless, only micro-/submicro-sized VS 2 aggregations have been reported in the literature mainly due to their thermodynamic and kinetic instability at small scale [25][26][27].…”