Samanth Kokkiligadda : DNA-Based Hybrid Hydrogels for High-Performance Zinc-Ion Batteries, Supercapacitors, and Bio-Optoelectronic Devices
Resumé:
Samanth Kokkiligadda,1,* Soong Ho Um1,2*
1 School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 16419, S. Korea
2 Progeneer Inc., #1002, 12, Digital-ro 31-gil, Guro-gu, Seoul 08380, S. Korea.
DNA-based hydrogels are emerging as versatile materials for next-generation energy storage and electronic devices due to their excellent ion-conducting properties and biocompatibility. However, challenges such as limited mechanical strength, electrochemical instability, and inconsistent nanomaterial networks have constrained their broader applications. Here, we report innovative DNA-based hybrid gel electrolytes and nano-bio composite hydrogel films tailored for both supercapacitors and zinc-ion batteries (ZIBs). The DNA hybrid gel electrolyte, synthesized from genomic DNA, exhibits remarkable mechanical strength (6.98 MPa), elongation (997.42%), ionic conductivity (73.27 mS/cm), and electrochemical stability (1.64 V), enabling uniform Zn²⁺ transport, suppression of dendrite growth, and extended cycling stability in ZIBs. In supercapacitors, it delivers high specific capacitance (425 F/g), rapid charge/discharge, and 93.8% capacitance retention over 200,000 cycles, with energy and power densities of 35.07 Wh/kg and 193.9 kW/kg, respectively. Concurrently, wafer-scale, crack-free DNA–MoS₂ nano-bio composite hydrogel films demonstrate ultrahigh photoconductivity, achieving a photocurrent of 5.5 mA at 1 V, an on/off ratio of 1.3 × 10⁶, and a photoresponsivity of 2.6 × 10⁵ A W⁻¹. These results highlight the integration of biology, electronics, and optics, offering sustainable and high-performance solutions for ZIBs, supercapacitors, and advanced bio-optoelectronic devices, paving the way for applications in wearable electronics, solar energy conversion, LEDs, and miniaturized energy systems.
Contact : amelie.leforestier@universite-paris-saclay.fr