CoSn(OH)6 nanocubes were synthesized by a facile one-step co-precipitate method.Their supercapacitor performances were investigated via a traditional threeelectrode system and all solid-state flexible asymmetric supercapacitor.The electrode shows a maximum specific capacitance up to 695 F.g-1.The flexible all solid-state asymmetric supercapacitor was fabricated based on CoSn(OH)6 nanocubes and active carbon as positive and negative electrode.The assembled asymmetric supercapacitor exhibits a specific capacitance (97.3 mF·cm-2),good rate/mechanical stability and a long cycling stability (5000 cycles),demonstrating great promise for applications in all solid-state flexible supercapacitors.
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