Abstract
The water chestnut-based carbon aerogel (WCA) that was directly in-situ prepared via a simple one-step hydrothermal method. The as-prepared WCA had excellent electrochemical properties as a binder-less electric double layer (EDL) electrode in SCs. Specifically, the WCA after annealing exhibited a superior mass specific capacitance of 343.4 F/g at 0.5 A/g in 3 M KOH. Also, the WCA displayed ultra-high capacitance retention rate, which significantly remained close to 100% after 20,000 cycles and still maintained 98.3% after 40,000 cycles. In addition, the green and sustainable WCA yet demonstrated ultra-high sensitivity (42.8 kPa−1) and recoverable performance, which had potential application value in flexible pressure sensors. After 3000 compression-release cycles, the recovery rate exceeded 90%.
Published Version
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