Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.

Abstract: A positive electrode active substance for a secondary cell, where the positive electrode active substance is capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The positive electrode active substance contains 0.3 to 5 mass % of graphite, 0.1 to 4 mass % of carbon obtained by carbonizing a water-soluble carbon material, or 0.1 to 5 mass % of a metal fluoride is supported on a composite containing a compound which contains at least iron or manganese, where the compound is represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4, and carbon obtained by carbonizing a cellulose nanofiber.

Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which one or two selected from the group consisting of a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material, and 0.1 to 5 mass % of a metal fluoride are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFeaMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.

Abstract: There is provided a positive electrode active material composite for a lithium-ion secondary battery, in which, when using as a positive electrode active material of the lithium-ion secondary battery, it can effectively improve high-temperature cycle characteristics. In the positive electrode active material composite for a lithium-ion secondary battery, only on the surface of a lithium transition metal oxide secondary particle (A) composed of one or more of the lithium transition metal oxide particles represented by the following formula (I): LiNiaCobMncM1xO2 . . . (I) or the following formula (II): LiNidCOeAlfM2yO2 . . . (II), a lithium-based polyanion particles (B) is composited with lithium transition metal oxide particles under a specific condition, the lithium-based polyanion particles (B) being represented by the following formula (III) or (III)?: LigMnhFeiM3zPO4 . . . (III) or Mnh?Fei?M3z?PO4 . . . (III)? and being supporting carbon (C) on a surface thereof.

Abstract: There is provided a positive electrode active material composite for a lithium-ion secondary battery, in which, when using as a positive electrode active material of the lithium-ion secondary battery, it can effectively improve high-temperature cycle characteristics. In the positive electrode active material composite for a lithium-ion secondary battery, only on the surface of a lithium transition metal oxide secondary particle (A) composed of one or more of the lithium transition metal oxide particles represented by the following formula (I): LiNiaCobMncM1xO2 . . . (I) or the following formula (II): LiNidCOeAlfM2yO2 . . . (II), a lithium-based polyanion particles (B) is composited with lithium transition metal oxide particles under a specific condition, the lithium-based polyanion particles (B) being represented by the following formula (III) or (III)?: LigMnhFeiM3zPO4 . . . (III) or Mnh?Fei?M3z?PO4 . . . (III)? and being supporting carbon (C) on a surface thereof.

Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFeaMnbMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.

Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.

Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LifeaMnbMcPO4; and carbon derived from a cellulose nanofiber supported thereon.

Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material are supported on an oxide containing at least iron or manganese, the oxide represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4.

Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which one or two selected from the group consisting of a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material, and 0.1 to 5 mass % of a metal fluoride are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFenMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.

Abstract: A positive electrode active substance for a secondary cell, where the positive electrode active substance is capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The positive electrode active substance contains 0.3 to 5 mass % of graphite, 0.1 to 4 mass % of carbon obtained by carbonizing a water-soluble carbon material, or 0.1 to 5 mass % of a metal fluoride is supported on a composite containing a compound which contains at least iron or manganese, where the compound is represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4, and carbon obtained by carbonizing a cellulose nanofiber.

Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.