The article uses a tool called Innography to analyze patents related to supercapacitors. The researchers looked at where these patents are from, the technology they cover, and the trends in patent applications. By studying the intensity of patents, they identified key patents, owners, and technology areas in the supercapacitor field. The analysis also evaluated the status, technology level, and future direction of the supercapacitor industry in China. This information can help guide the development of strategies for the supercapacitor industry.