负极材料是钠离子电池的重要组成部分,肩负着负载和释放钠离子的重要作用,其效率直接影响电池整体的动力学性能。基于全球钠离子电池负极材料相关专利,总结了该领域专利的申请年度变化趋势,讨论了技术的主要来源地、优势机构、领域分布与创新态势,重点分析了嵌入型材料、转化型材料、合金型材料等不同类型的高价值专利。结果表明,钠离子电池负极材料技术及应用呈现高速发展趋势,中国是全球相关专利最大持有国,也是产业化进程最快的国家。我国的申请机构主要集中在广东、江苏、陕西、湖南等地,中国科学院物理研究所是最早开展相关研究的机构之一。在技术领域上,碳基材料与过渡金属硫化物、硒化物材料占据主导地位。碳基材料的重点在于提高首次库伦效率指标和理论比容量,而提升循环稳定性和导电性能是过渡金属硫化物、硒化物材料的研究重点。基于上述分析,提出相关高校、科研院所、企业应加强研发,并适当布局国际专利,推动钠离子电池技术和产业创新发展的建议。
Anode materials are an important component of sodium-ion batteries,responsible for loading and releasing sodium-ions,and their efficiency directly affects the performance of the battery.Based on global patents related to anode materials for sodium-ion batteries,this article summarized the trend of patent application,discussed the main sources of technology,leading institutions,field distribution and innovation trends.It particularly analyzed high-value patents in intercalation,conversion and alloying anode materials for sodium-ion batteries.The results indicated that the technology and application of sodium-ion battery anode materials was experiencing rapid growth.China is the country with the largest number of patents and also with the fastest industrialization process.In China,the application institutions were mainly concentrated in Guangdong,Jiangsu,Shaanxi and Hunan.The Institute of Physics of the Chinese Academy of Sciences was one of the earliest institutions to carry out related research.In the technical field,carbon-based materials,transition metal sulfides and selenide materials were in dominant positions.The focus of carbon-based materials was to improve ICE and theoretical specific capacity,while improving cycle stability and conductivity was the research focus of transition metal sulfides and selenide materials.Based on this analysis,it was recommended that universities,research institutes,and enterprises should strengthen collaborative R&D efforts and strategically expand international patent portfolios to drive technological and industrial innovation in sodium-ion batteries.
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基金资助
浙江省重大软科学研究项目(2024C15001)
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