Jiaxin Li(李加新,博士生), Mingzhong Zou(邹明忠,硕士生), Weiwei Wen(温伟伟,硕士生), Yi Zhao, Yingbin Lin(林应斌), Luzhuo Chen(陈鲁倬), Heng Lai(赖恒), Lunhui Guan and Zhigao Huang(黄志高), Spinel MFe2O4 (M = Co, Ni) nanoparticles coated on multi-walled carbon nanotubes as electrocatalysts for Li–O2 batteries, Journal of Materials Chemistry A, 2014.
Ternary spinel MFe2O4 (M = Co, Ni) nanoparticles coated on multi-walled carbon nanotubes (MFe2O4/CNTs) were prepared via a simple hydrothermal method. Owing to their favorable structures and desirable bi-functional oxygen reduction and evolution activities, the resulting MFe2O4/CNT (M = Co, Ni) composites as electrocatalysts for the cathodes deliver better electrochemical performance during the discharge and charge processes compared with that of the pure carbon of ketjen black (KB). The good performance can be attributed to the excellent catalytic activity of highly dispersed MFe2O4 (M = Co, Ni) nanoparticles and facile electron transport by supporting CNTs. This preliminary result manifests that the ternary spinel MFe2O4/CNT (M = Co, Ni) composites are promising cathode electrocatalysts for non-aqueous Li–O2 batteries.