abstract |
The present invention is an electrode composition for a calcium ion battery, containing Ca x V 2 O 5 ㆍyH 2 O, wherein x is 0 ≤ x <2, and y is 0 <y <1 Provide an electrode composition. The electrode composition for a calcium ion battery according to the present invention has excellent battery performance by reversibly deintercalating and inserting calcium ions, which are divalent cations, instead of lithium ions, which are previously used monovalent cations. |