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Free-Standing Na2/3Fe1/2Mn1/2O2@Graphene Film for a Sodium-Ion Battery Cathode

Title
Free-Standing Na2/3Fe1/2Mn1/2O2@Graphene Film for a Sodium-Ion Battery Cathode
Authors
Zhu, HL[Zhu, Hongli]Lee, KT[Lee, Kang Taek]Hitz, GT[Hitz, Gregory Thomas]Han, XG[Han, Xiaogang]Li, YY[Li, Yuanyuan]Wan, JY[Wan, Jiayu]Lacey, S[Lacey, Steven]Cresce, AV[Cresce, Arthur von Wald]Xu, K[Xu, Kang]Wachsman, E[Wachsman, Eric]Hu, LB[Hu, Liangbing]
DGIST Authors
Lee, KT[Lee, Kang Taek]
Issue Date
2014-03-26
Citation
ACS Applied Materials and Interfaces, 6(6), 4242-4247
Type
Article
Article Type
Article
Keywords
Binder-FreeBindersCathodesCoulombic EfficiencyElectro-Chemical Impedance Spectroscopy (EIS)Electrochemical PerformanceElectrolyteElectrolyte AdditivesElectrolytesFree-StandingGrapheneHigh-Voltage CathodesIonsManganeseNa-Ion BatteriesNa-Ion Battery CathodeNa2/3Fe1/2Mn1/2O2Sodium-Ion Batteries
ISSN
1944-8244
Abstract
The development of high-performance cathodes for sodium-ion batteries remains a great challenge, while low-cost, high-capacity Na2/3Fe 1/2Mn1/2O2 is an attractive electrode material candidate comprised of earth-abundant elements. In this work, we designed and fabricated a free-standing, binder-free Na2/3Fe1/2Mn 1/2O2@graphene composite via a filtration process. The porous composite led to excellent electrochemical performance due to the facile transport for electrons and ions that was characterized by electrochemical impedance spectroscopy at different temperatures. The electrode delivered a reversible capacity of 156 mAh/g with high Coulombic efficiency. The importance of a fluorinated electrolyte additive with respect to the performance of this high-voltage cathode in Na-ion batteries was also investigated. © 2014 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/3105
DOI
10.1021/am405970s
Publisher
American Chemical Society
Related Researcher
  • Author Lee, Kang Taek Advanced Energy Conversion and Storage Lab(AECSL)
  • Research Interests
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringAECSL(Advanced Energy Conversion and Storage Lab)1. Journal Articles


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