| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 178643 | Electrochemistry Communications | 2016 | 6 Pages |
•Calcium ions were firstly removed from CaCo2O4 and then re-intercalated.•The prepared electrode opens the possibility to develop a calcium-ion battery based on two intercalation compounds.•A new phase is formed for calcium extraction beyond Ca0.6Co2O4.
A veritable calcium-ion battery using CaCo2O4 (s.g. P2/m) as a positive electrode, V2O5 (s.g. Pmmn) as a negative electrode and calcium perchlorate in acetonitrile as electrolyte solution has been evaluated for the first time. The electrochemical tests, XRD results and X-ray photoelectron spectra confirm that the calcium ion can be firstly removed from CaCo2O4 and then reintercalated, and this material can be an interesting candidate for developing non-aqueous calcium-ion batteries.
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