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    • 17. 发明申请
    • ELECTRODE MATERIAL
    • 电极材料
    • WO2018011576A1
    • 2018-01-18
    • PCT/GB2017/052049
    • 2017-07-12
    • UNIVERSITETET I OSLOGOLDING, Louise
    • SOTTMANN, JonasHERRMANN, MatthiasFJELLVÅG, Helmer
    • H01M4/485H01M4/56H01M10/052H01M10/054H01M4/36H01M4/38H01M4/58H01M4/02
    • H01M10/054H01M4/366H01M4/485H01M4/5825H01M4/622H01M4/625H01M10/052H01M10/0566H01M10/0567H01M10/0568H01M10/0569
    • The invention provides sodium-ion and lithium-ion cells comprising: (i) a positive electrode; (ii) a negative electrode comprising: an active material of formula (I): X p M m( AO 4 ) n (I); or a composite of active materials of formulae (II) and (III): X j M (II) + X k (AO 4 ) (III); and (iii) an electrolyte; wherein in formula (I): X is Na or Li; each M is independently selected from the group consisting of the group IV metals having an oxidation state of from -4 to +2, and the group V metals having an oxidation state of from -3 to +3; each A is independently selected from the group consisting of the transition metals, and the main group elements from groups III to VII; p is 0 or any positive rational number which is less than 36, preferably p is 0; m and n are integers independently selected from 1, 2 and 3; and p, m and n are selected such that the compound of formula (I) is electrically neutral; wherein in formula (II) and (III): X and A are as defined in formula (I); M is selected from the group consisting of the group IV metals having an oxidation state of from -4 to 0, and the group V metals having an oxidation state of from -3 to 0; j is 0 or any positive rational number up to 4; k is any positive rational number from 1 to 6, preferably from 1 to 4, e.g. 1, 2 or 3; and j and k are selected such that each compound of formula (II) and formula (III) is electrically neutral. Also provided are batteries, in particular rechargeable batteries, which comprise such cells or a plurality of such cells.
    • 本发明提供钠离子和锂离子电池,其包含:(i)正极; (ii)负极,所述负极包含:式(I)的活性材料:X p M m(AO 0 4)n (I); 或式(II)和(III)的活性材料的复合物:X j M(II)+ X k(AO 4) (III); 和(iii)电解质; 其中在式(I)中:X是Na或Li; 每个M独立地选自氧化态为-4至+2的第IV族金属和氧化态为-3至+3的第V族金属; 每个A独立地选自过渡金属和来自III-VII族的主族元素; p为0或小于36的任何正有理数,优选p为0; m和n是独立地选自1,2和3的整数; 并且选择p,m和n以使得式(I)的化合物是电中性的; 其中在式(II)和(III)中:X和A如式(I)中所定义; M选自氧化态为-4至0的第IV族金属和氧化态为-3至0的第V族金属; j是0或者任何直到4的正理性数; k是从1到6,优选从1到4的任何正的有理数,例如1。 1,2或3; 并且选择j和k使得式(II)和式(III)的每种化合物是电中性的。 还提供了包括这种电池或多个这种电池的电池,特别是可再充电电池。