Au-assisted polymerization of conductive poly(N-phenylglycine) as high-performance positive electrodes for asymmetric supercapacitors.

Nanotechnology

State Key Laboratory for Manufacturing Systems Engineering, International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies, Overseas Expertise Introduction Center for Micro/Nano Manufacturing and Nano Measurement Technologies Discipline Innovation, Xi'an Jiaotong University (Yantai) Research Institute for Intelligent Sensing Technology and System, Xi'an Jiaotong University, Xi'an, Shannxi 710049, People's Republic of China.

Published: November 2021

Herein, a novel conductive poly(N-phenylglycine) (PNPG) polymer was successfully prepared, byelectrochemical polymerization method (+0.75 VAg/AgCl) for 10 min, on flexible stainless-steel plate coated with a thin Au film (Au/SS) to serve as a binder-free pseudocapacitive PNPG/Au/SS electrode for energy storage devices. Compared to the electrode without Au coating, PNPG/Au/SS electrode exhibited better electrochemical performance with larger specific capacitance (495 F gat a current density of 2 A g), higher rate performance and lower resistance, which are good indications to act as a positive electrode for asymmetric supercapacitor devices. Combined with activated carbon as a negative electrode, an asymmetric supercapacitor device was constructed. It displayed a specific capacitance of 38 F gat a current density of 0.5 A gand an energy density of 5.3 Wh kgat a power density of 250 W kg. Experimentally, two asymmetric supercapacitor devices were connected in series to power a home-made windmill continuously for 8 s, revealing the high potential of this novel conductive polymer material for energy storage application.

Download full-text PDF

Source
http://dx.doi.org/10.1088/1361-6528/ac1fb3DOI Listing

Publication Analysis

Top Keywords

asymmetric supercapacitor
12
conductive polyn-phenylglycine
8
novel conductive
8
pnpg/au/ss electrode
8
energy storage
8
specific capacitance
8
gat current
8
current density
8
electrode asymmetric
8
supercapacitor devices
8

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!