Sub-micrometric LiCr0.2Ni0.4Mn1.4O4 spinel as 5 V-cathode material exhibiting huge rate capability at 25 and 55 °C期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Sub-micrometric LiCr0.2Ni0.4Mn1.4O4 spinel as 5 V-cathode material exhibiting huge rate capability at 25 and 55 °C

Authors:	Mohamed Aklalouch José Manuel Amarilla Rosa M Rojas Ismael Saadoune José María Rojo

Institution:	1. Instituto de Ciencia de Materiales de Madrid (CSIC), c/Sor Juana Inés de la Cruz, 3 Cantoblanco, 28049 Madrid, Spain;2. ECME, Faculté des Sciences et Techniques Marrakech, (UCAM) Av. A. ElKhattabi, B.P. 549-Marrakech, Morocco

Abstract:	Single phase LiCr_0.2Ni_0.4Mn_1.4O₄ spinel has been synthesized by a simple sucrose assisted combustion method that yields highly crystalline homogeneous sub-micrometric samples (650 nm). The LiCr_0.2Ni_0.4Mn_1.4O₄, with capacity retention of 92% at 60 C discharge rate, shows the highest rate capability among LiNi_0.5Mn_1.5O₄-type cathodes. It delivers very high-power (34.8 kW kg^?1 at 60 C). Studies developed at 55 °C demonstrate that LiCr_0.2Ni_0.4Mn_1.4O₄ retains huge rate capability and large cycleability at high temperature.

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