Preparing micro/nano core–shell sphere CeO2 via a low temperature route for improved lithium storage performance

Abstract Here, micro/nano core–shell sphere CeO2 was prepared via a lower temperature reaction method followed by calcination in air. The structure and the morphology of the as-prepared sample were characterized by XRD and SEM, respectively. It was found that citric acid played a key role in the formation of the micro/nano core–shell sphere structure. EIS and charge–discharge test were carried out by using the as-prepared CeO2 as an anode material of lithium ion batteries. The initial discharge specific capacity was 693.8 mA h g−1 and stabilized reversibly at about 546.7 mA h g−1 after 300 cycles. The as-prepared micro/nano core shell sphere CeO2 particles demonstrated an obvious improved electrochemical performances. This exploring about the micro/nanomaterials may direct a new generation of Li ion battery anode materials.