Abstract:

The advent of new energy storage technologies has identified them as key components for shaping innovative power systems, which are essential in achieving carbon peak and carbon neutrality goals. This paper leverages patent data to explore the developmental trends and research status of emerging energy storage technologies in China, including electrochemical, compressed air, and hydrogen energy storage. It primarily examines subfields using the LDA topic model and offers detailed analyses of patent durations, regional patterns in patent applications, applicant units, and collaboration relationships. Moreover, it assesses the global status and trends of these technologies. The findings reveal a rapid growth trend in the development and application of emerging energy storage technologies, with China emerging as a global leader. In the realm of Chinese patents, lithium-ion batteries and supercapacitors demonstrate significant growth, alongside other flourishing technologies such as compressed air and hydrogen energy storage, liquid metal batteries, and aqueous batteries. Patent applications are predominantly filed in economically developed regions like Guangdong, Jiangsu, Beijing, and Zhejiang. While regional focuses vary, the majority of applications originate from universities and private enterprises specializing in new energy. Based on these insights, it is recommended that future advancements in emerging energy storage technologies be led by major research entities to enhance coordinated development in less developed areas. Strengthening partnerships between universities and private enterprises is also vital for driving the integrated progress of these technologies across academia, industry, and research sectors.

Key words: patent, new energy storage, lithium batteries, hydrogen storage