关键词: 锂离子电池, 负极材料, 数据挖掘, 专利分析

Abstract: Based on the data mining and patentometric analysis of Chinese invention patents, an overview of anode materials for lithium-ion battery is presented. The results show that the lithium ion battery anode materials have achieved sustained growth for several years, but now the growth speed has slowed down. According to the nationality analysis of the applicants, a large number of patents are from Chinese and Japanese applicants and the domestic applicants are mainly from Guangdong, Shanghai, Beijing and Zhejiang. In addition, with analysis of the patents from key companies, we can better understand the technology hotspots distribution of anode materials for lithium-ion battery.

Key words: lithium-ion battery, anode materials, data mining, patent analysis