AI Article Synopsis
- The study focuses on using hierarchical ultrathin nanostructures as effective electrode materials for supercapacitors due to their high surface area and enhanced ion/electron transport.
- They explored nine l-amino acids to create CoNi-OH/l-A materials, resulting in various structures including lamellar and flower-shaped forms.
- The ultrathin flowerlike CoNi-OH/l-asparagine showed exceptional performance, with a specific capacity of 405.4 mAh g and impressive cycling stability, while an asymmetrical supercapacitor device exhibited a strong energy density and durability over numerous cycles.
Article Abstract
The hierarchical ultrathin nanostructures are excellent electrode materials for supercapacitors because of their large surface area and their ability to promote ion and electron transport. Herein, we investigated nine l-amino acids (LAs) as inductive agents to synthesize a series of CoNi-OH/LAs materials for energy storage. With the different amino acids, the assembled CoNi-OH/LAs form a lamellar, flower-shaped, and bulk structure. Among all materials, the ultrathin flowerlike CoNi-OH/l-asparagine (CoNi-OH/l-Asn) exhibits an excellent specific capacity of 405.4 mAh g (2608 F g) and a 100% retention rate after 3000 cycles. We also assembled asymmetrical supercapacitor CoNi-OH/l-Asn//N-rGO devices, which demonstrated an energy density of 64.9 Wh kg at 799.9 W kg and superlong cycling stability (82.4% at 10 A g) over 5000 cycles.
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| http://dx.doi.org/10.1021/acsnano.0c08088 | DOI Listing |
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