Low-Carbon and Nanosheathed ZnCo₂O₄ Spheroids with Porous Architecture for Boosted Lithium Storage Properties.

ABSTRACT: Multielectronic reaction electrode materials for high energy density lithium-ion batteries (LIBs) are severely hindered by their inherent sluggish kinetics and large volume variations, leading to rapid capacity fade. Here, a simple method is developed to construct low-carbon and nanosheathed ZnCo₂O₄ porous spheroids (ZCO@C-5). In this micro/nanostructure, an ultrathin amorphous carbon layer (~2 nm in thickness) is distributed all over the primary nanosized ZCO particles (~20 nm in diameter), which finally self-assembles into porous core (ZCO)-shell(carbon) micron spheroids. The nanoencapsulation and macro/mesoporous architecture can not only provide facile electrolyte penetration and rapid ion/electron transfer but also better alleviate volumetric expansion effect to

SUBMITTER: Mo Y 

PROVIDER: S-EPMC6753607 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature