Electrode material, method of manufacturing thereof and nonaqueous lithium secondary battery

A crystal structure is provided to improve a characteristic of an electrode material, such as vanadium oxide. In the crystal structure, an amorphous state and a layered crystal state coexist at a predetermined ratio in a layered crystalline material such as vanadium oxide. In the layered crystalline...

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Main Authors Kaneko, Satoko, Taniguchi, Masahiko, Iwata, Asao, Shiozaki, Ryuji, Ando, Nobuo
Format Patent
LanguageEnglish
Published 14.08.2012
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Abstract A crystal structure is provided to improve a characteristic of an electrode material, such as vanadium oxide. In the crystal structure, an amorphous state and a layered crystal state coexist at a predetermined ratio in a layered crystalline material such as vanadium oxide. In the layered crystalline material having such a layered crystal structure, layered crystal particles having a layer length L of 30 nm or shorter are formed. Ions are easily intercalated to and deintercalated from between the layers. When such a material is used for the positive electrode active material, a nonaqueous lithium secondary battery of which the discharge capacity and the cycle characteristic are good is manufactured.
AbstractList A crystal structure is provided to improve a characteristic of an electrode material, such as vanadium oxide. In the crystal structure, an amorphous state and a layered crystal state coexist at a predetermined ratio in a layered crystalline material such as vanadium oxide. In the layered crystalline material having such a layered crystal structure, layered crystal particles having a layer length L of 30 nm or shorter are formed. Ions are easily intercalated to and deintercalated from between the layers. When such a material is used for the positive electrode active material, a nonaqueous lithium secondary battery of which the discharge capacity and the cycle characteristic are good is manufactured.
Author Iwata, Asao
Ando, Nobuo
Kaneko, Satoko
Taniguchi, Masahiko
Shiozaki, Ryuji
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References S. H. Garofalini "Molecular dynamics simulations of Li transport between cathode crystals", Journal of Power Sources 110, pp. 412-415, 2002.
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Snippet A crystal structure is provided to improve a characteristic of an electrode material, such as vanadium oxide. In the crystal structure, an amorphous state and...
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Title Electrode material, method of manufacturing thereof and nonaqueous lithium secondary battery
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