Research progress in the preparation of porous biomass carbon materials and their applications in supercapacitors
The biomass carbon material is a kind of green and renewable energy material.Its efficient utilization is of great significance for the sustainable development of the energy environment and the green and low-carbon transition of energy.Biomass carbon materials are widely used in energy storage and conversion,catalysis,adsorption,and many other fields due to their porous nature,abundant functional groups,large specific surface area,excellent electrochemical performance,low cost,and renewable.However,the properties of biomass carbon materials are not only closely related to the microstructure,but also the heteroatom doping has an important impact on the structure and electrochemical properties of biomass carbon materials.The accurate structure regulation of biomass carbon materials is an effective way to improve their electrochemical performance.In this work,the preparation methods of biomass carbon materials and their applications in supercapacitors are comprehensively reviewed,and the relationship between the structure and properties of porous carbon materials is discussed.On this basis,the influence mechanism and rules of different conditions,and different preparation processes(such as material selection,material treatment,and activation mode)on the structure characteristics of biomass carbon materials are analyzed.In this review,the mechanism and rules of the influence of the structure characteristics on the electrochemical properties of porous biomass carbon materials are described in detail,and the preparation process and performance regulation of porous biomass carbon materials need to be perfected and improved.Finally,the main development directions of preparation technology and electrochemical properties of porous biomass carbon materials in the future are pointed out.
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