The addition of iron to Ni<inf>3</inf>S<inf>2</inf> electrode for sodium secondary battery

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Journal Article
Current Applied Physics, 2011, 11 (1 SUPPL.)
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In order to investigate the role of iron additive in the Ni 3S2 electrode, the Ni3S2 electrode was prepared by addition of iron. The discharge properties of Na/Ni 3S2 cells using 1 M NaCF3SO3 in tetra(ethylene glycol)dimethyl ether liquid electrolyte were investigated at room temperature. The Na/Ni3S2 cell had an initial discharge capacity of 400 mAh g-1 with a plateau potential at 0.84 V versus Na/Na+. The discharge capacity decreased to 255 mAh g -1 after 15 cycles. Iron additive in Ni3S2 electrode played a role as a conductive agent and did not form iron sulfide during charging. © 2010 Elsevier B.V. All rights reserved.
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