Research progress on biomass-based flexible supercapacitors
With the development of wearable devices and the improvement in public awareness of environmental protection,exploration for high-performance and green economic flexible electrochemical energy storage devices has become a research hotspot.High-performance energy storage materials prepared from biomass can significantly reduce production costs and achieve sustainable utilization of carbon resources,showing great development potential and practical application value.Herein,the electrode materials,flexible membranes and various assembly methods of flexible supercapacitors were introduced,followed by analysis on the characteristics and advantages of electrode materials based on wood,cellulose gel,paper and biomass waste as well as the research status quo of biomass-based flexible membranes,including cellulose paper diaphragm and biological diaphragm.In addition,the flexible supercapacitors in stacked type(sandwich type),interdigital type(micro-interdigital type),fiber type(linear type)were reviewed,with their performance differences compared.Finally,the challenges of biomass materials used in flexible supercapacitors and the future development directions were discussed.
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