title: A New CuO-Fe2O3-Mesocarbon Microbeads Conversion Anode in a High-Performance Lithium-Ion Battery with a Li1.35Ni0.48Fe0.1Mn1.72O4Spinel Cathode.
abstract: A ternary CuO-Fe2O3-mesocarbon microbeads (MCMB) conversion anode was characterized and combined with a high-voltage Li1.35Ni0.48Fe0.1Mn1.72O4spinel cathode in a lithium-ion battery of relevant performance in terms of cycling stability and rate capability. The CuO-Fe2O3-MCMB composite was prepared by using high-energy milling, a low-cost pathway that leads to a crystalline structure and homogeneous submicrometrical morphology as revealed by XRD and electron microscopy. The anode reversibly exchanges lithium ions through the conversion reactions of CuO and Fe2O3and by insertion into the MCMB carbon. Electrochemical tests, including impedance spectroscopy, revealed a conductive electrode/electrolyte interface that enabled the anode to achieve a reversible capacity value higher than 500 mAh g-1when cycled at a current of 120 mA g-1. The remarkable stability of the CuO-Fe2O3-MCMB electrode and the suitable characteristics in terms of delivered capacity and voltage-profile retention allowed its use in an efficient full lithium-ion cell with a high-voltage Li1.35Ni0.48Fe0.1Mn1.72O4cathode. The cell had a working voltage of 3.6 V and delivered a capacity of 110 mAh gcathode-1with a Coulombic efficiency above 99 % after 100 cycles at 148 mA gcathode-1. This relevant performances, rarely achieved by lithium-ion systems that use the conversion reaction, are the result of an excellent cell balance in terms of negative-to-positive ratio, favored by the anode composition and electrochemical features.
authors.affiliation: Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro, 5, 00185, Rome, Italy.
authors.forename: Daniele
authors.initials: D
authors.lastname: Di Lecce
authors.affiliation: Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro, 5, 00185, Rome, Italy.
authors.forename: Roberta
authors.initials: R
authors.lastname: Verrelli
authors.affiliation: Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara, 17, 44121, Ferrara, Italy.
authors.forename: Daniele
authors.initials: D
authors.lastname: Campanella
authors.affiliation: Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara, 17, 44121, Ferrara, Italy.
authors.forename: Vittorio
authors.initials: V
authors.lastname: Marangon
authors.affiliation: Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara, 17, 44121, Ferrara, Italy.
authors.forename: Jusef
authors.identifier: 0000-0002-8218-5680
authors.initials: J
authors.lastname: Hassoun
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D011211:Electric Power Supplies; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry*; D055772:Green Chemistry Technology; D008094:Lithium / Q000737:chemistry*; D008277:Magnesium Oxide / Q000737:chemistry*; D008863:Microspheres
chemical_list: D005290:Ferric Compounds; C111130:spinell; C000499:ferric oxide; D008277:Magnesium Oxide; D003300:Copper; D008094:Lithium; D000537:Aluminum Oxide; C030973:cupric oxide
keywords: conversion anode; lithium-ion batteries; mesoporous materials; organic-inorganic hybrid composites; spinel phases