| 摘要 |
The invention relates to electrodes that contain active materials of the formula: AaMb(SO4)cXx wherein A is a single or mixed alkali metal phase comprising one or more of sodium, potassium, lithium mixed with sodium, lithium mixed with potassium or lithium mixed with sodium and potassium; M is selected from one or more transition metals and/or non-transition metals and/or metalloids; X is a moiety comprising one or more atoms selected from halogen and OH; and further wherein 1<a<3; b is in the range: 0<b≦̸2; c is in the range: 2≦̸c≦̸3 and x is in the range 0≦̸x≦̸1. Such electrodes are useful in, for example, sodium ion battery applications. |
