Photo-assisted synthesis of coaxial-structured polypyrrole/electrochemically hydrogenated TiO₂ nanotube arrays as a high performance supercapacitor electrode.

ABSTRACT: An organic-inorganic coaxial-structured hybrid of PPy/EH-TNTAs electrode with outstanding supercapacitive performance was developed by incorporating electroactive polypyrrole (PPy) into a highly-conductive TiO₂ substrate, namely, electrochemically hydrogenated TiO₂ nanotube arrays (EH-TNTAs) through a photo-assisted potentiodynamic electrodeposition route. The as-fabricated PPy/EH-TNTAs hybrid electrode achieves a specific capacitance of up to 614.7 F g^-1 at 1.0 A g^-1 with 87.4% of the initial capacitance remaining after 5000 cycles at 10 A g^-1, outperforming other fabricated PPy-TNTAs hybrid electrodes. The photoelectrodeposited and electrodeposited hybrid samples as well as the EH-TNTAs-based and air-TNTAs-based hybrid samples were f

SUBMITTER: Liu J 

PROVIDER: S-EPMC9079746 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature