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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
Author(s)
Zhu, HongliLee, Kang TaekHitz, Gregory ThomasHan, XiaogangLi, YuanyuanWan, JiayuLacey, StevenCresce, Arthur von WaldXu, KangWachsman, EricHu, Liangbing
Issued Date
2014-03
Citation
ACS Applied Materials & Interfaces, v.6, no.6, pp.4242 - 4247
Type
Article
Author Keywords
Na-ion battery cathodeNa2/3Fe1/2Mn1/2O2graphenefree-standingelectrolytebinder-free
Keywords
HIGH-CAPACITYSTORAGE MECHANISMENERGY-STORAGEANODE MATERIALELECTROLYTEINSERTIONPERFORMANCEOXIDE
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
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Appears in Collections:
Department of Energy Science and Engineering AECSL(Advanced Energy Conversion and Storage Lab) 1. Journal Articles

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