The Enhanced Electrochemical Performance of Nanocrystalline Li[Li0.26Ni0.11Mn0.63]O2 Synthesized by the Molten-Salt Method for Li-ion batteries

作者: Wang ZhenYao , Li Biao , Ma Jin , Xia DingGuo

DOI: 10.1016/J.ELECTACTA.2013.11.124

关键词: ElectrochemistryNanocrystalline materialNanoparticleMaterials scienceElectrodeLithiumMetal ions in aqueous solutionIonMolten saltInorganic chemistry

摘要: Abstract Nanocrystalline Li[Li0.26Ni0.11Mn0.63]O2 were easily prepared by using Ni0.15Mn0.85(OH) 2 and Li CO 3 as precursors KCl melt-salt for the high capacity materials of Li-ion storage. The obtained nanoparticles showed same morphology polygonal shape particle size distribution increased with increasing sinter temperature. electrode sintered at 800 °C 12 h exhibits a reversible more than 300 mAh g −1 0.1 C rate between 2 V 4.8 V retention remains 86% 90% after 90 cycles 0.5 C 1 C, respectively. These superior electrochemical performances are discussed in detail ascribed to low dimension well-crystallized particles. provides short diffusion path fast transport channels lithium ion insertion/extraction reactions structure restrains elimination oxide vacancies metal ions rearrangement during charge–discharge cycling.

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