Spray-Drying Synthesis of LiFeBO(3)/C Hollow Spheres With Improved Electrochemical and Storage Performances for Li-Ion Batteries

LiFeBO(3)/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(3)/C hollow spheres consist of LiFeBO(3)@C particles and the average size of LiFeBO(3)@C particles is around 50–100 nm. The t...

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Detalles Bibliográficos
Autores principales: Sui, Yulei, Chen, Wei, Tang, Shibao, Wu, Ling, Wang, Binjue, Li, Huacheng, Li, Wei, Zhong, Shengkui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6546830/
https://www.ncbi.nlm.nih.gov/pubmed/31192195
http://dx.doi.org/10.3389/fchem.2019.00379
Descripción
Sumario:LiFeBO(3)/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(3)/C hollow spheres consist of LiFeBO(3)@C particles and the average size of LiFeBO(3)@C particles is around 50–100 nm. The thickness of the amorphous carbon layer which is coated on the surface of LiFeBO(3) nanoparticles is about 2.5 nm. LiFeBO(3)@C particles are connected by carbon layers and formed conductive network in the LiFeBO(3)/C hollow spheres, leading to improved electrical conductivity. Meanwhile, the hollow structure boosts the Li(+) diffusion and the carbon layers of LiFeBO(3)@C particles protect LiFeBO(3) from moisture corrosion. Consequently, synthesized LiFeBO(3)/C sample exhibits good electrochemical properties and storage performance.

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