首页> 外国专利> Carbonaceous material for non-aqueous electrolyte secondary battery anode, non-aqueous electrolyte secondary battery anode, non-aqueous electrolyte secondary battery, and vehicle

Carbonaceous material for non-aqueous electrolyte secondary battery anode, non-aqueous electrolyte secondary battery anode, non-aqueous electrolyte secondary battery, and vehicle

机译:用于非水电解质二次电池阳极的碳质材料,非水电解质二次电池阳极,非水电解质二次电池和车辆

摘要

Provided is a carbonaceous material for a non-aqueous electrolyte secondary battery anode having high discharge capacity per unit volume and excellent storage characteristics.;The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a true density (ρBt) determined by a pycnometer method using butanol of not less than 1.55 g/cm3 and less than 1.75 g/cm3 and a discharge capacity of an anode at 0.05 V to 1.5 V in terms of a lithium reference electrode standard of not less than 180 mAh/g. Furthermore, the slope 0.9/X (Vg/Ah) of a discharge curve calculated from a discharge capacity X (Ah/g) and a potential difference of 0.9 (V) corresponding to 0.2 V to 1.1 V in terms of a lithium reference electrode standard is not greater than 0.75 (Vg/Ah), and an absorbed moisture quantity after storage for 100 hours in a 25° C. 50% RH air atmosphere is not greater than 1.5 wt %.
机译:提供一种单位体积的放电容量高,保存特性优异的非水电解质二次电池用负极用碳质材料。本发明的非水电解质二次电池用负极用碳质材料的真密度(ρ<用比重瓶法使用小于等于1.55 g / cm 3 且小于1.75 g / cm 3 的丁醇通过比重瓶法测定Sub> Bt )以不低于180 mAh / g的锂参比电极标准,在0.05 V至1.5 V的阳极电导率。此外,根据锂参比电极,由放电容量X(Ah / g)和对应于0.2 V至1.1 V的0.9(V)的电势差计算的放电曲线的斜率0.9 / X(Vg / Ah)标准不大于0.75(Vg / Ah),并且在25℃下储存50小时后的吸收湿气量为50%RH的空气气氛不大于1.5wt%。

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