title: Multiangular Rod-Shaped Na0.44MnO2as Cathode Materials with High Rate and Long Life for Sodium-Ion Batteries.
abstract: The tunnel-structured Na0.44MnO2is considered as a promising cathode material for sodium-ion batteries because of its unique three-dimensional crystal structure. Multiangular rod-shaped Na0.44MnO2have been first synthesized via a reverse microemulsion method and investigated as high-rate and long-life cathode materials for Na-ion batteries. The microstructure and composition of prepared Na0.44MnO2is highly related to the sintering temperature. This structure with suitable size increases the contact area between the material and the electrolyte and guarantees fast sodium-ion diffusion. The rods prepared at 850 °C maintain specific capacity of 72.8 mA h g-1and capacity retention of 99.6% after 2000 cycles at a high current density of 1000 mA g-1. The as-designed multiangular Na0.44MnO2provides new insight into the development of tunnel-type electrode materials and their application in rechargeable sodium-ion batteries.
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2522, Australia.
authors.forename: Qiannan
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2522, Australia.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Hu
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2522, Australia.
authors.forename: Mingzhe
authors.initials: M
authors.lastname: Chen
authors.affiliation: Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia.
authors.forename: Qinfen
authors.initials: Q
authors.lastname: Gu
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2522, Australia.
authors.forename: Yuhai
authors.initials: Y
authors.lastname: Dou
authors.affiliation: School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology , Gardens Point, Brisbane, QLD 4000, Australia.
authors.forename: Ziqi
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2522, Australia.
authors.forename: Shulei
authors.identifier: http://orcid.org/0000-0003-1155-6082
authors.initials: S
authors.lastname: Chou
authors.affiliation: Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong , Innovation Campus, Squires Way, North Wollongong, NSW 2522, Australia.
authors.forename: Shi Xue
authors.initials: SX
authors.lastname: Dou
keywords: cathode; high rate; long life; multiangular Na0.44MnO2; sodium-ion batteries