AUTHOR=Wang Chunxiang , Peng Wanwan , Li Zhifeng , Liang Yali , Zhong Shengwen , Zhang Qian 

TITLE=Synthesis and Characterization of Nano SnO2 Modification on LiNi0.8Mn0.1Ni0.1O2 Cathode Materials for Lithium Ion Batteries

JOURNAL=Frontiers in Energy Research

VOLUME=7

YEAR=2019

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2019.00125

DOI=10.3389/fenrg.2019.00125

ISSN=2296-598X

ABSTRACT=<p>The precursor material of Ni<sub>0.</sub>8Co<sub>0.1</sub>Mn<sub>0.1</sub>(OH)<sub>2</sub> was prepared by a co-precipitation method to obtain the layered cathode materials LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (811) through roasting with LiOH·H<sub>2</sub>O. Then the SnO<sub>2</sub>-modified samples were obtained by adding tin oxide into the ball mill. It was found by XRD characterization of the original and modified samples, that the addition of SnO<sub>2</sub> did not change the layered structure of the raw materials. Microstructure and distribution of the SnO<sub>2</sub> were analyzed with SEM and EDS. Charge/discharge tests indicated that the SnO<sub>2</sub>-modified phases improved the cycling stability and rate capability. The results of CV test showed that the polarization of SnO<sub>2</sub> modified electrode was smaller. AC impedance showed that SnO<sub>2</sub>/LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> electrode had smaller <italic>R</italic><sub><italic>ct</italic></sub> and <italic>R</italic><sub><italic>f</italic></sub> value. The above test results indicate that the modification of SnO<sub>2</sub> improves the electrochemical performance of cathode material LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub>.</p>