提高工作电压可以显著提升钴酸锂正极材料的能量密度,但也往往伴随着电池循环性能下降和寿命缩短等问题。通过对高电压钴酸锂电池技术中国专利申请数据进行检索和系统分析,总结该领域中国专利申请情况,探讨相关技术的研究现状及发展趋势。高电压钴酸锂电池的研究经历了缓慢发展期、快速发展期和稳步发展期,相关专利申请以企业为主,研究的重点方向是钴酸锂正极材料的改性技术和高电压电解液。企业和相关研究机构可根据高电压钴酸锂电池技术的发展趋势和重点方向来优化研发路径,提升竞争优势,促进我国锂电产业的加速发展。

Increasing the operating voltage can significantly improve the energy density of lithium cobalt oxide cathode materials,but it is often accompanied by problems such as decreased battery cycling performance and shortened lifespan.By searching and systematically analyzing the patent application data of high-voltage lithium cobalt oxide battery technology in China,this paper summarized the situation of Chinese patent applications in this field,and explored the research status and development trends of related technologies.The research on high-voltage lithium cobalt oxide batteries had gone through a slow development period,a rapid development period,and a steady development period.Relevant patent applications were mainly filed by enterprises,and the focus of research was on the modification technology of lithium cobalt oxide cathode materials and high-voltage electrolytes.Enterprises and related research institutions can optimize their research and development paths,enhance their competitive advantages,and promote the accelerated development of China's lithium battery industry based on the development trends and key directions of high-voltage lithium cobalt oxide battery technology.