Research on Technology Innovation Method and Route of Hard Carbon Anode Material for Energy Storage Based on Patent Intelligence Analysis
As an energy storage anode material difficult to graphitize,hard carbon has been widely used in the field of anode materials for high-power sodium-ion batteries.Improving the cell compaction density is a crucial part of further optimizing the performance of high-power sodium-ion batteries.Therefore,based on the information from the patent database of the China National Intellectual Property Administration,this paper analyzed the overall tendency and technology pathways related to patents on the compaction density of hard carbon materials in high-power sodium-ion batteries globally by using literature analysis tools such as EXCEL.It is found that the flowability and compaction of hard carbon materials can be greatly optimized through the use of composite techniques,such as the addition of appropriate metal and non-metal elements for heteroatom doping and process control methods,by altering the particle size distribution and surface properties of the materials.This,in turn,greatly enhances their compaction density.Based on this analysis,this paper summarizes the three main technical methods to improve the compaction density of hard carbon materials in the current industry,with a view to provide decision-making support for clarifying the research and development path of hard carbon materials.
hard carboncompaction densityanode materialssodium-ion batteriespatent analysis
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