Nitrogen-doped graphene derived from polyaniline/graphene oxide composites with improved capacity and cyclic performance of Li-O2 battery
writer：Fujie Li, Min Zhu, Zhihong Luo*, Lulu Guo, Zhicheng Bian, Yibing Li, Kun Luo*
keywords：Nitrogen doping, Graphene, Lithium oxygen battery, Capacity, Cyclic performance
source：期刊
specific source：Journal of Solid State Electrochemistry,2019,23, 2391–2399.
Issue time：2019年
Nitrogen-doped graphene (NGO) was synthesized by the pyrolysis of precursor polyaniline/graphene oxide composites, wherethe nitrogen content of the NGO was dependent on the loading amount of polyaniline. The Li-O2 cell with the NGO cathodeexhibits a higher full-discharge capacity and longer cycle life than the one with the graphene oxide cathode. SEM and Ramananalyses indicate that film-like Li2O2 product is formed on the NGO cathode in battery discharging following a surface-pathwaymode, due to the adsorption of soluble intermediates by the nitrogen-containing species of the NGO cathode according to rotatingring disk electrode analysis, which effectively lowers the charge potential of Li-O2 cells and alleviates the corrosion of Li anode.The simple synthesis of NGO with good catalytic performance and electric conductance is prospective to be applied on Li-O2batteries at low cost.
https://doi.org/10.1007/s10008-019-04339-w