AUTHOR=Sui Yulei , Chen Wei , Tang Shibao , Wu Ling , Wang Binjue , Li Huacheng , Li Wei , Zhong Shengkui 

TITLE=Spray-Drying Synthesis of LiFeBO3/C Hollow Spheres With Improved Electrochemical and Storage Performances for Li-Ion Batteries

JOURNAL=Frontiers in Chemistry

VOLUME=7

YEAR=2019

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2019.00379

DOI=10.3389/fchem.2019.00379

ISSN=2296-2646

ABSTRACT=<p>LiFeBO<sub>3</sub>/C cathode material with hollow sphere architecture is successfully synthesized by a spray-drying method. SEM and TEM results demonstrate that the micro-sized LiFeBO<sub>3</sub>/C hollow spheres consist of LiFeBO<sub>3</sub>@C particles and the average size of LiFeBO<sub>3</sub>@C particles is around 50–100 nm. The thickness of the amorphous carbon layer which is coated on the surface of LiFeBO<sub>3</sub> nanoparticles is about 2.5 nm. LiFeBO<sub>3</sub>@C particles are connected by carbon layers and formed conductive network in the LiFeBO<sub>3</sub>/C hollow spheres, leading to improved electrical conductivity. Meanwhile, the hollow structure boosts the Li<sup>+</sup> diffusion and the carbon layers of LiFeBO<sub>3</sub>@C particles protect LiFeBO<sub>3</sub> from moisture corrosion. Consequently, synthesized LiFeBO<sub>3</sub>/C sample exhibits good electrochemical properties and storage performance.</p>