Abstract

Hierarchically porous Co 3O 4 film is prepared by a cathodic electrodeposition via liquid crystalline template. The as-prepared Co 3O 4 film has a net-like structure of interconnected nanoflakes with a thickness of 15–20 nm. Interestingly, the Co 3O 4 nanoflakes possess mesoporous walls ranging from 2 to 3 nm. As cathode material for supercapacitors, the hierarchically porous Co 3O 4 film exhibits superior supercapacitor performances with high specific capacitances (443 F g − 1 at 2 A g − 1 and 334 F g − 1 at 40 A g − 1 ) as well as excellent cycle life, making it suitable for high-performance supercapacitor application. The improved supercapacitor performances are due to its unique hierarchically porous morphological characteristics, which provide fast ion and electron transfer, large reaction surface area, resulting in fast reaction kinetics.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.