The Enhanced Electrochemical Performance of Nanocrystalline Li[Li₀.₂₆Ni₀.₁₁Mn₀.₆₃]O₂ Synthesized by the Molten-Salt Method for Li-ion batteries ZhenYao, Wang; Biao, Li; Jin, Ma; DingGuo, Xia 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; CRYSTALS; DISTRIBUTION; ELECTRODES; EXTRACTION; LITHIUM; LITHIUM IONS; MOLTEN SALTS; NANOPARTICLES; NANOSTRUCTURES; OXIDES; PARTICLE SIZE; SYNTHESIS Nanocrystalline Li[Li₀.₂₆Ni₀.₁₁Mn₀.₆₃]O₂ were easily prepared by using Ni₀.₁₅Mn₀.₅(OH)₂ and Li₂CO₃ as precursors and KCl as melt-salt for the high capacity materials of Li-ion storage. The obtained nanoparticles showed same morphology of polygonal shape and the particle size distribution increased with increasing sinter temperature. The Li[Li₀.₂₆Ni₀.₁₁Mn₀.₆₃]O₂ electrode sintered at 800 °C for 12 h exhibits a reversible capacity of more than 300 mAh g⁻¹ at 0.1 C rate between 2 V and 4.8 V and the capacity retention remains 86% and 90% after 90 cycles at the rate of 0.5 C and 1 C, respectively. These superior electrochemical performances are discussed in detail and ascribed to the low dimension and well-crystallized particles. The low dimension provides a short diffusion path and fast transport channels for the lithium ion insertion/extraction reactions and the well-crystallized structure restrains the elimination of oxide ion vacancies and metal ions rearrangement during charge–discharge cycling. Available from http://dx.doi.org/10.1016/j.electacta.2013.11.124 United Kingdom 2014-01-01 English Journal Article Journal Name: Electrochimica Acta; Journal Volume: 117; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA) Medium: X; Size: page(s) 285-291 https://doi.org/10.1016/J.ELECTACTA.2013.11.124 PII: S0013-4686(13)02357-8 [] 117 Journal ID: ISSN 0013-4686; CODEN: ELCAAV; Other: PII: S0013-4686(13)02357-8; TRN: GB15R1009028068 INIS 2015-05-05 22321859