| 摘要 |
Compounds of the formula A Ni0.5 M10.5-x M2x O2 wherein: A is selected from one or more of lithium, sodium and potassium; M1 and M2 each comprise a metal in oxidation state +4 and is selected from one or more of manganese, titanium and zirconium, with X in the range 0 ¤ X ¤ 0.5; and further wherein when X = 0 then M1 = Zr. Such materials are useful as electrode materials in sodium ion and/or lithium ion and/or potassium ion battery applications, and are capable of being recharged multiple times without significant loss in charge capacity. |
