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- W3019430752 abstract "Rational design and synthesis of efficient electrodes with pronounced energy storage properties are crucial for supercapacitors. Herein, we report thin NiCr-layered double hydroxide nanoflakes (NiCr-LDNs) for a high-performance supercapacitor. These fabricated NiCr-LDNs, with various Ni2+/Cr3+ ratios, are one-step controllably synthesized through ultrasonication coupled with mechanical agitation, without hydrothermal treatment or extra exfoliation using organic solvents. Through comparison of different Ni2+/Cr3+ ratios, the Ni2Cr1-LDNs with a 4.7 nm thickness exhibited a superb capacitance performance of 1525 F g-1 at 2 A g-1, which is competitive with most previously reported layered double hydroxide (LDH)-based electrodes. These thin nanoflake structures have the potential to reduce the energy barrier and enhance the capture ability of electrolyte ions. Besides, an asymmetric supercapacitor (ASC) assembled using Ni2Cr1-LDNs achieved a remarkable energy density of 55.22 W h kg-1 at a power density of 400 W kg-1 and maintained high specific capacitance (over 81%), even after 5000 cycles. This work offers an efficient and facile route to fabricating LDH nanoflakes for boosting energy storage capabilities." @default.
- W3019430752 created "2020-05-01" @default.
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- W3019430752 date "2020-01-01" @default.
- W3019430752 modified "2023-10-14" @default.
- W3019430752 title "One-step facile synthesis of nickel–chromium layered double hydroxide nanoflakes for high-performance supercapacitors" @default.
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- W3019430752 doi "https://doi.org/10.1039/d0na00178c" @default.
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