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Free-Standing Na2/3Fe1/2Mn1/2O2@Graphene Film for a Sodium-Ion Battery Cathode
- Free-Standing Na2/3Fe1/2Mn1/2O2@Graphene Film for a Sodium-Ion Battery Cathode
- 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
- ACS Applied Materials and Interfaces, 6(6), 4242-4247
- Article Type
- Binder-Free; Binders; Cathodes; Coulombic Efficiency; Electro-Chemical Impedance Spectroscopy (EIS); Electrochemical Performance; Electrolyte; Electrolyte Additives; Electrolytes; Free-Standing; Graphene; High-Voltage Cathodes; Ions; Manganese; Na-Ion Batteries; Na-Ion Battery Cathode; Na2/3Fe1/2Mn1/2O2; Sodium-Ion Batteries
- 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.
- American Chemical Society
- Related Researcher
Lee, Kang Taek
Advanced Energy Conversion and Storage Lab(AECSL)
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- Energy Science and EngineeringAECSL(Advanced Energy Conversion and Storage Lab)1. Journal Articles
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