基于专利分析的石墨烯领域国际发展趋势

International Development Trend of Graphene Field Based on Patent Analysis

目的:为了揭示国际石墨烯领域的专利技术竞争态势。方法:本文基于incoPat专利数据库,利用文献计量法和文本挖掘方法,对国际石墨烯领域专利进行了分析。结论:石墨烯领域专利在2017年达到峰值,近2年有相对的下降趋势,主要侧重石墨烯制备和化学技术,中国的专利申请数量最多,集中在北京、江苏和广东,主要技术研究热点是石墨烯量子点、石墨烯纳米片、多层石墨烯和石墨烯薄膜。

Objective: To reveal the competitive situation of patent technology in the field of international graphene. Methods: Based on incopat patent database, this paper analyzes the international patents in the field of graphene by using bibliometric method and text mining method. Conclusion: Patents in the field of graphene reached a peak in 2017, with a relative downward trend in recent two years, mainly focusing on graphene preparation and chemical technology. China has the largest number of patent applications, mainly in Beijing, Jiangsu and Guangdong. The main technical research hotspots are graphene quantum dots, graphene nanosheets, multilayer graphene and graphene films.