Electrochemical performance of LiV3−xNixO8 cathode materials synthesized by a novel low-temperature solid-state method |
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Authors: | Li Liu Junli Sun Yongmei Wang |
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Affiliation: | Institute of New Energy Material Chemistry, Engineering Research Center of Energy Storage & Conversion (Ministry of Education) and Key Laboratory of Energy-Material Chemistry(Tianjin), Nankai University, Tianjin 300071, People's Republic of China |
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Abstract: | A series of cathode materials for lithium ion batteries with the formula LiV3−xNixO8 (x = 0.000, 0.025, 0.050 and 0.100) have been synthesized by a novel low-temperature solid-state method. The synthesized cathode materials have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), discharge-charge test, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). These results indicate that LiV2.95Ni0.050O8 shows much better electrochemical performances than LiV3O8. This is due to better electrochemical reversibility and lower particle-to-particle resistance after Ni2+ doping. |
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Keywords: | LiV3O8 Cathode materials Doping Lithium ion batteries |
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