Electrochemical evaluation of LiZn Mn2−O4 (x≤0.10) cathode material synthesized by solution combustion method
Source abstract
Abstract
Abstract The spinel LiZn x Mn 2− x O 4 ( x ≤0.10) cathode materials have been synthesized by solution combustion method at 600 °C for 3 h. The structure and the morphology of LiZn x Mn 2− x O 4 were characterized by X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM), respectively. All the obtained samples were identified as the spinel structure of LiMn 2 O 4 , the lattice parameters of samples decreased and the particle size increased as the Zn content increased. The effects of Zn-doping on the electrochemical characteristics of LiMn 2 O 4 were investigated by galvanostatic charge–discharge experiments, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Among them, LiZn 0.05 Mn 1.95 O 4 particles presented outstanding cycling stability with a capacity retention of 82.9% at a discharge rate of 1 C (1 C=148 mA h g −1 ) after 500 cycles. Spinel LiZn 0.05 Mn 1.95 O 4 had reversible cycling performance, revealing that doping LiMn 2 O 4 with Zn improves its electrochemical performance.
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OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Supercapacitor Materials and Fabrication
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