Sungkyunkwan University Develops Ultra-Stretchable Hydrogel Electrolytes for Flexible Electronics
Sungkyunkwan University has created a hydrogel electrolyte with high stretchability and anti-freezing properties, enabling supercapacitors to operate from -40°C to 80°C. This advancement addresses the limitations of traditional hydrogels, enhancing performance in wearable technologies and cold environments.
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Researchers at Sungkyunkwan University have engineered a hydrogel electrolyte that combines high stretchability and anti-freezing capabilities. The innovation allows supercapacitors to maintain functionality across a wide temperature range, addressing challenges in soft energy storage.
This hydrogel exhibits an elongation at break of 907% and a tensile strength of 766 kPa. Ionic conductivity is recorded at 4.35 S m⁻¹ at room temperature and remains substantial at -20°C, crucial for reliable energy storage performance.
The hydrogel enables supercapacitors to achieve an areal capacitance of 93.52 mF cm⁻² and demonstrates 98% capacitance retention after 45,000 cycles. This technology has potential applications in wearable electronics and soft robotics, marking a significant advance in flexible energy storage solutions. The design may inspire further exploration into hydrogel customization for various industrial applications.
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