title: K-ion and Na-ion storage performances of Co3O4-Fe2O3nanoparticle-decorated super P carbon black prepared by a ball milling process.
abstract: The hybridisation of Co3O4and Fe2O3nanoparticles dispersed in a super P carbon matrix is proposed as a favourable approach to improve the electrochemical performance (reversible capacity, cycling stability and rate capability) of the metal oxide electrodes in metal-ion batteries. Hybrid Co3O4-Fe2O3/C is prepared by a simple, cheap and easily scalable molten salt method combined with ball-milling and used in sodium-ion and potassium-ion batteries for the first time. The electrode exhibits excellent cycling stability and superior rate capability in sodium-ion cells with a capacity recovery of 440 mA h g-1(93% retention) after 180 long-term cycles at 50-1000 mA g-1and back to 50 mA g-1. In contrast, Co3O4-Fe2O3, Co3O4and Fe2O3electrodes display unsatisfactory electrochemical performance. The hybrid Co3O4-Fe2O3/C is also reactive with potassium and capable of delivering a reversible capacity of 220 mA h g-1at 50 mA g-1which is comparable with the most reported anode materials for potassium-ion batteries. The obtained results broaden the range of transition metal oxide-based hybrids as potential anodes for K-ion and Na-ion batteries, and suggest that further studies of these materials with potassium and sodium are worthwhile.
authors.affiliation: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia. m.rahman@deakin.edu.au.
authors.forename: Irin
authors.initials: I
authors.lastname: Sultana
authors.affiliation: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia. m.rahman@deakin.edu.au.
authors.forename: Md Mokhlesur
authors.identifier: http://orcid.org/0000-0002-4499-8277
authors.initials: MM
authors.lastname: Rahman
authors.affiliation: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia. m.rahman@deakin.edu.au.
authors.forename: Srikanth
authors.initials: S
authors.lastname: Mateti
authors.affiliation: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia. m.rahman@deakin.edu.au.
authors.forename: Vahide Ghanooni
authors.initials: VG
authors.lastname: Ahmadabadi
authors.affiliation: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia. m.rahman@deakin.edu.au.
authors.forename: Alexey M
authors.initials: AM
authors.lastname: Glushenkov
authors.affiliation: Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia. m.rahman@deakin.edu.au.
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen