摘要
固态锂电池作为下一代高性能储能技术,其关键材料的研发对于提高固态锂电池的能量密度、稳定性和安全性至关重要.本文以全球固态锂电池专利为研究对象,基于文本挖掘方法提取和整理固态锂电池专利文献中的材料信息,通过主要材料分布和共现网络重点分析了固态锂电池的材料分布特点和潜在研发材料,通过机构-材料的分布和共现网络重点分析了主要研发机构的材料布局和研发重点,梳理了2021年以来固态锂电池专利中出现的新材料及其研发机构,揭示了固态锂电池材料领域的现有研究热点和未来发展趋势.研究结果显示,锂、铝、镧、磷、硫化物等材料在固态锂电池专利中占据重要地位;大部分机构围绕核心材料进行创新和合作,在材料开发和应用方面具有相似的策略;少数重要机构积极开发固态锂电池的新材料并广泛布局相关专利,对固态锂电池的材料开发、技术创新和商业化有推动作用.本文为固态锂电池材料的分析和挖掘提供了新的方法,为固态锂电池的材料研发和技术创新提供参考.
Abstract
The development of key materials for solid-state lithium batteries,which represent next-generation high-performance energy storage solutions,is essential for enhancing their energy density,stability,and safety.Considering global patents on solid-state lithium batteries as research objects,this study employs a text mining method to extract material information from these patents.Furthermore,by constructing the primary distribution and co-occurrence network of materials,it analyzes the characteristics of material distribution and identifies potential future materials of solid-state lithium batteries.In addition to the above network,a distribution and co-occurrence network of institutions and materials is also established to examine the material layouts and research considerations of major institutions.Specifically,new materials and research institutions appearing in the patents on solid-state lithium batteries since 2021 are reviewed,and current research hotspots and future development trends are identified.Notably,the review identifies lithium,aluminum,lanthanum,phosphorus,and sulfide as critical materials appearing in the solid-state lithium battery patents.Furthermore,the results reveal that most organizations focus on these core materials,adopting similar strategies for material development and application.Interestingly,a few important institutions also report the development of new materials for solid-state lithium batteries and acquire related patents,thus driving material development,technological innovation,and the commercialization of solid-state lithium batteries.Thus,this paper proposes a new method for analyzing and identifying materials used in solid-state lithium batteries,offering valuable insights for material development and technological innovations within this field.
基金项目
中国科学院武汉文献情报中心青年领军人才项目(E0KZ451)
国家科技期刊平台
NSTL
万方数据