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Invention Publication
CN101847742A 非水电解质二次电池 无效 - 撤回

非水电解质二次电池
Abstract:
本发明提供一种非水电解质二次电池，其使用具有橄榄石型结构的磷酸铁锂作为正极活性物质，使用碳材料作为负极活性物质，具有高输出特性，过充电时的安全性优异，并且充放电循环特性优良。本发明的非水电解质二次电池具备具有正极活性物质的正极，具有负极活性物质的负极，间隔件，非水电解液，其特征在于，上述正极活性物质含有通式LixFePO4(式中，x为0＜x＜1.3。)所表示的具有橄榄石型结构的磷酸铁锂，上述负极活性物质含有碳材料，所述碳材料为以6mA/cm2放电时放电深度10～30％范围的平均动作电位按锂基准(vs.Li+/Li)计为0.3V以下的碳材料，上述非水电解液含有0.1质量％～5.0质量％的烷氧基苯衍生物。
Abstract(English):

The invention provides a nonaqueous electrolyte secondary battery, which uses lithium iron phosphate of olivine form as positive electrode active material and uses carbon material as negative electrode active material. The nonaqueous electrolyte secondary battery having high output characteristics and excellent safety when overcharging as well as excellent charge and discharge cycle characteristics according to an aspect of the invention includes a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, a separator, and a nonaqueous electrolyte. The positive electrode active material includes lithium iron phosphate having an olivine crystal structure represented by General Formula LixFePO4 (where x is 0

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