POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
A positive electrode active material for non-aqueous electrolyte secondary batteries according to an example embodiment of the present invention comprises a lithium transition metal composite oxide having a layered structure and containing not less than 75 mol% of Ni with respect to the total molar...
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06.10.2022
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Abstract | A positive electrode active material for non-aqueous electrolyte secondary batteries according to an example embodiment of the present invention comprises a lithium transition metal composite oxide having a layered structure and containing not less than 75 mol% of Ni with respect to the total molar quantity of elements excluding Li and O. The lithium transition metal composite oxide is of secondary particles obtained by aggregation of primary particles. A compound represented by the general formula AxByOz (where 1≤x≤2, 1≤y≤5, 4≤z≤9, A is at least one element selected from among Ca and Sr, and B is at least one element selected from among W, Mo, Ti, Si, Nb, and Zr) is adhered at at least the interface between primary particles inside the secondary particles.
Selon un mode de réalisation donné à titre d'exemple, la présente invention concerne un matériau actif d'électrode positive pour batteries secondaires à électrolyte non aqueux, qui comprend un oxyde composite de lithium-métal de transition ayant une structure en couches et contenant pas moins de 75 % en moles de Ni par rapport à la quantité molaire totale d'éléments à l'exclusion de Li et O. L'oxyde composite de lithium-métal de transition est constitué de particules secondaires obtenues par agrégation de particules primaires. Un composé représenté par la formule générale AxByOz (dans laquelle 1≤x≤2, 1≤y≤5, 4≤z≤9, A représentant au moins un élément choisi parmi Ca et Sr et B représentant au moins un élément choisi parmi W, Mo, Ti, Si, Nb et Zr) est collé au niveau d'au moins l'interface entre des particules primaires à l'intérieur des particules secondaires.
実施形態の一例である非水電解質二次電池用正極活物質は、層状構造を有し、Li、Oを除く元素の総モル量に対して75モル%以上のNiを含有するリチウム遷移金属複合酸化物を含む。リチウム遷移金属複合酸化物は、一次粒子が凝集してなる二次粒子であり、少なくとも二次粒子の内部における一次粒子同士の界面には、一般式AxByOz(式中、1≦x≦2、1≦y≦5、4≦z≦9、AはCaおよびSrから選択される少なくとも1種、BはW、Mo、Ti、Si、Nb、およびZrから選択される少なくとも1種)で表される化合物が固着している。 |
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AbstractList | A positive electrode active material for non-aqueous electrolyte secondary batteries according to an example embodiment of the present invention comprises a lithium transition metal composite oxide having a layered structure and containing not less than 75 mol% of Ni with respect to the total molar quantity of elements excluding Li and O. The lithium transition metal composite oxide is of secondary particles obtained by aggregation of primary particles. A compound represented by the general formula AxByOz (where 1≤x≤2, 1≤y≤5, 4≤z≤9, A is at least one element selected from among Ca and Sr, and B is at least one element selected from among W, Mo, Ti, Si, Nb, and Zr) is adhered at at least the interface between primary particles inside the secondary particles.
Selon un mode de réalisation donné à titre d'exemple, la présente invention concerne un matériau actif d'électrode positive pour batteries secondaires à électrolyte non aqueux, qui comprend un oxyde composite de lithium-métal de transition ayant une structure en couches et contenant pas moins de 75 % en moles de Ni par rapport à la quantité molaire totale d'éléments à l'exclusion de Li et O. L'oxyde composite de lithium-métal de transition est constitué de particules secondaires obtenues par agrégation de particules primaires. Un composé représenté par la formule générale AxByOz (dans laquelle 1≤x≤2, 1≤y≤5, 4≤z≤9, A représentant au moins un élément choisi parmi Ca et Sr et B représentant au moins un élément choisi parmi W, Mo, Ti, Si, Nb et Zr) est collé au niveau d'au moins l'interface entre des particules primaires à l'intérieur des particules secondaires.
実施形態の一例である非水電解質二次電池用正極活物質は、層状構造を有し、Li、Oを除く元素の総モル量に対して75モル%以上のNiを含有するリチウム遷移金属複合酸化物を含む。リチウム遷移金属複合酸化物は、一次粒子が凝集してなる二次粒子であり、少なくとも二次粒子の内部における一次粒子同士の界面には、一般式AxByOz(式中、1≦x≦2、1≦y≦5、4≦z≦9、AはCaおよびSrから選択される少なくとも1種、BはW、Mo、Ti、Si、Nb、およびZrから選択される少なくとも1種)で表される化合物が固着している。 |
Author | OGASAWARA Takeshi FUJITANI Naoya AOKI Yoshinori INOUE Katsuya |
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DocumentTitleAlternate | MATÉRIAU ACTIF D'ÉLECTRODE POSITIVE DESTINÉ À DES BATTERIES SECONDAIRES À ÉLECTROLYTE NON AQUEUX, ET BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX 非水電解質二次電池用正極活物質および非水電解質二次電池 |
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Title | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY |
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