Improving the electrochemical behavior of LiCoO2 electrode by mixed Zr–Mg doping
作者： H.Y. Xu , S. Xie , C.P. Zhang , C.H. Chen
DOI: 10.1016/J.JPOWSOUR.2005.02.005
关键词: Cyclic voltammetry 、 Electrode 、 Electrochemistry 、 Iodometry 、 Cobalt 、 Lithium cobalt oxide 、 Chemistry 、 Dielectric spectroscopy 、 Doping 、 Analytical chemistry
摘要: Abstract A new class of LiCo 1− x Zr /2 Mg O 2 ( = 0, 0.02, 0.06, 0.10, 0.20) materials has been synthesized using a solution–combustion method with mixed acetates/nitrates as the starting materials. The structure oxides was analyzed X-ray diffraction (XRD). Iodometry titration used to measure oxidation state cobalt. electrochemical performance electrodes cyclic voltammetry (CV), impedance spectroscopy (EIS), and galvanostatic charge–discharge cycling studies in voltage range 2.7–4.2 V (versus Li metal). It is found that maximum doping level ) around above which MgZrO 4 formed an impurity phase. use combined Zr–Mg resulted decrease electrode increase specific capacity stability 3.6 V plateau efficiency.
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