A New CuO‐Fe2O3‐Mesocarbon Microbeads Conversion Anode in a High‐Performance Lithium‐Ion Battery with a Li1.35Ni0.48Fe0.1Mn1.72O4 Spinel Cathode. Issue 7 (1st March 2017)

• Record Type: Journal Article
• Authors: Di Lecce, Daniele; Verrelli, Roberta; Campanella, Daniele; Marangon, Vittorio; Hassoun, Jusef
• Is Part Of: ChemSusChem. Volume 10:Issue 7(2017)
• Page Start: 1607
• Page End: 1615
• Publication Date: 2017-03-01
• Subjects: conversion anode -- lithium-ion batteries -- mesoporous materials -- organic–inorganic hybrid composites -- spinel phases; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201601638
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: A ternary CuO‐Fe2 O3 ‐mesocarbon microbeads (MCMB) conversion anode was characterized and combined with a high‐voltage Li1.35 Ni0.48 Fe0.1 Mn1.72 O4 spinel cathode in a lithium‐ion battery of relevant performance in terms of cycling stability and rate capability. The CuO‐Fe2 O3 ‐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 Fe2 O3 and 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 −1 when cycled at a current of 120 mA g −1 . The remarkable stability of the CuO‐Fe2 O3 ‐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 Li1.35 Ni0.48 Fe0.1 Mn1.72 O4 cathode. The cell had a working voltage of 3.6 V and delivered a capacity of 110 mAh gcathode −1 with 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. Abstract : Powerful ternary mix : A composite of CuO, Fe2 O3, and mesocarbon microbeads is prepared by high‐energy ball milling and applied as a conversion anode in lithium‐ion batteries with a high‐voltage Li1.35 Ni0.48 Fe0.1 Mn1.72 O4 spinel cathode. The cell has a working voltage of 3.6 V and delivers a capacity of 110 mAh gcathode −1 with a Coulombic efficiency above 99 % after 100 cycles at 148 mA gcathode −1 .