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Indexed by:Journal Papers

Date of Publication:2020-02-15

Journal:JOURNAL OF POWER SOURCES

Included Journals:EI、SCIE

Volume:449

ISSN No.:0378-7753

Key Words:Rechargeable iodide ion battery; Ethylene glycol; Carbon black; Zinc foil

Abstract:In recent years, metal ion batteries have been developed rapidly and have been made great progress, but nonmetal ion batteries have rarely been reported. In our work, carbon black (cb) is used as cathode material for iodine-ion battery. The electrolyte uses ethylene glycol as a solvent and exhibits exceptional stability, and has been experimentally proven to have high cycle stability when zinc and copper are used as anodes for iodide-ion battery. When the zinc foil is used as the negative electrode, the specific capacity is 83 mA h g(cb)(-1) at charge current density of 1 A g(-1), and the specific capacity does not attenuated after 10000 cycles. Under the same conditions, when the copper foil is used as negative electrode, the average specific capacity is 92 mA h g(cb)(-1) and the specific capacity is 50 mA h g(cb)(-1) after about 4000 cycles. After X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) characterization tests, it is verified that the iodide-ion is intercalated in the carbon material instead of the redox reaction during the charging and discharging process.