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LITHIUM-ION BATTERY NEGATIVE ELECTRODE ACTIVE MATERIAL, LITHIUM-ION BATTERY NEGATIVE ELECTRODE, LITHIUM ION BATTERY, BATTERY PACK AND BATTERY-POWERED VEHICLE
LITHIUM-ION BATTERY NEGATIVE ELECTRODE ACTIVE MATERIAL, LITHIUM-ION BATTERY NEGATIVE ELECTRODE, LITHIUM ION BATTERY, BATTERY PACK AND BATTERY-POWERED VEHICLE
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机译:锂离子电池负极活性材料,锂离子电池负极,锂离子电池,电池组和带电池的车辆
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摘要
The present invention relates to negative electrode carbon materials for lithium-ion batteries, and particularly to a lithium-ion battery negative electrode active material, a lithium-ion battery negative electrode, a lithium-ion battery, a battery pack and a battery-powered vehicle. In a pore structure, measured by N 2 adsorption and desorption, of the lithium-ion battery negative electrode carbon particles, by using the total pore volume measured by BJH having a pore size of 2-200 nm as the reference, the sum of the volumes of pores with a pore size of 2-10 nm is 2-10%, the sum of the volumes of pores with a pore size of 10-100 nm is 30-65%, and the sum of the volumes of pores with a pore size of 100-200 nm is 30-65%, and the carbon particles have a BET specific surface area of 0.9-1.9 m 2/g. The charge and discharge capacity and the rate capability of the lithium-ion battery prepared by the carbon particles are improved.
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机译:锂离子电池用负极碳材料技术领域本发明涉及锂离子电池用负极碳材料,尤其涉及锂离子电池用负极活性物质,锂离子电池用负极,锂离子电池,电池组以及电池供电的材料。车辆。锂离子电池负极用碳粒子的通过N 2 Sub>吸附脱附测定的细孔结构中,使用由孔径为2-200nm的BJH测定的总细孔容积为参照,孔径为2-10nm的孔的体积之和为2-10%,孔径为10-100nm的孔的体积之和为30-65%,孔径为100-200 nm的孔的体积为30-65%,碳粒子的BET比表面积为0.9-1.9 m 2 Sup> / g。由碳颗粒制备的锂离子电池的充放电容量和倍率容量得到改善。
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