| 摘要 |
The present invention relates to a water-based alkali metal ion energy storage device, comprising an anode, a cathode, a separator, and an aqueous electrolyte solution containing alkali metal ions, characterized in that the anode active material is a multi-element transition metal oxide containing alkali metal and having a general formula of A1+a (XmYnMn1-m-n) O2+b, wherein A is selected from one or more of Li, Na and K; X and Y are selected from one of Ni, Co, Al, Cr, V, Ti, and Fe, 0<m+n<1, 0≤a and b<1; the crystal structure of the multi-element transition metal oxide of the anode active material has a layered structure, and is reversibly recycled at a capacity greater than 100 mAh/g. The water-based alkali metal electrochemical energy storage device has high capacity and low cost, is safe and environmentally friendly, and can be used in energy storage devices of various sizes. |
