Advanced DNA Gels for High-Performance Energy storage
발표자
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초록
내용
Hydrogels are flexible materials with high potential for use in electronic devices due to their ability to conduct ions. However, their weak mechanical strength and poor electrochemical stability have limited their practical applications. To overcome these issues, we developed a new type of hybrid gel electrolyte using genomic DNA. This DNA-based gel exhibits strong mechanical properties (with a strength of 6.98 MPa and an elongation of 997.42%), high ionic conductivity (73.27 mS/cm), and excellent electrochemical stability (1.64 V). When used in supercapacitors, these gel-based devices show a specific capacitance of 425 F/g, maintain quick charge/discharge cycles, and retain 93.8% of their capacitance after about 200,000 cycles. They also deliver a maximum energy density of 35.07 Wh/kg and a maximum power density of 193.9 kW/kg, outperforming existing supercapacitors. These DNA gel electrolytes could be immediately useful in minicars, solar cells, and LED lighting, potentially transforming the field of high-performance green energy.