title: Mesoporous hexagonal Co3O4 for high performance lithium ion batteries.
abstract: Mesoporous Co3O4 nanoplates were successfully prepared by the conversion of hexagonal β-Co(OH)2 nanoplates. TEM, HRTEM and N2 sorption analysis confirmed the facet crystal structure and inner mesoporous architecture. When applied as anode materials for lithium storage in lithium ion batteries, mesoporous Co3O4 nanocrystals delivered a high specific capacity. At 10 C current rate, as-prepared mesoporous Co3O4 nanoplates delivered a specific capacity of 1203 mAh/g at first cycle and after 200 cycles it can still maintain a satisfied value (330 mAh/g). From ex-situ TEM, SAED and FESEM observation, it was found that mesoporous Co3O4 nanoplates were reduced to Li2O and Co during the discharge process and re-oxidised without losing the mesoporous structure during charge process. Even after 100 cycles, mesoporous Co3O4 crystals still preserved their pristine hexagonal shape and mesoporous nanostructure.
authors.affiliation: 1] Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia [2] Centre for Clean Energy Technology, School of Chemistry and Forensic Science, University of Technology Sydney, Broadway, Sydney, NSW 2007, Australia.
authors.forename: Dawei
authors.initials: D
authors.lastname: Su
authors.affiliation: Centre for Clean Energy Technology, School of Chemistry and Forensic Science, University of Technology Sydney, Broadway, Sydney, NSW 2007, Australia.
authors.forename: Xiuqiang
authors.initials: X
authors.lastname: Xie
authors.affiliation: Electron Microscope Unit, University of New South Wales, Sydney, NSW 2052, Australia.
authors.forename: Paul
authors.initials: P
authors.lastname: Munroe
authors.affiliation: Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW 2522, Australia.
authors.forename: Shixue
authors.initials: S
authors.lastname: Dou
authors.affiliation: Centre for Clean Energy Technology, School of Chemistry and Forensic Science, University of Technology Sydney, Broadway, Sydney, NSW 2007, Australia.
authors.forename: Guoxiu
authors.initials: G
authors.lastname: Wang