FABRICATION OF THICK ANODIC FILMS ON 304-TYPE STAINLESS STEEL FOR BINDER-FREE SUPERCAPACITORS

1 Wang Yingge
Co-authors:
2 Li Gang 1 Wang Kaiying 1 Chen Xuyuan
Institutions:
1 Department of Microsystems-IMS, University of South-Eastern Norway, Horten, 3184, Norway, Yingge.wang@usn.no
2 Center of Nano Energy and Devices , College of Information and Computer & Institute of Energy Innovation, Taiyuan University of Technology, Taiyuan, 030024, China, ligang4122001@gmail.com
Conference:
11th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 16th - 18th 2019
Proceedings:
Proceedings 11th International Conference on Nanomaterials - Research & Application
Pages:
97-102
ISBN:
978-80-87294-95-6
ISSN:
2694-930X
Published:
1st April 2020
Proceedings of the conference have been sent to Web of Science and Scopus for evaluation and potential indexing.
Metrics:
63 views / 23 downloads
Abstract

We report the fabrication of thick nanoporous oxide films on stainless steel (SS) foils via long-term constant-potential anodization at room temperature. The anodization potential of 50 V was employed for 1, 2 and 3 h, respectively to form the anodic films with different thickness. The effects of anodic film thickness on supercapacitance behavior have been further investigated as binder-free electrodes. It is found that the anodic film thickness increases linearly with the anodization time while the electrochemical behaviors of anodic film were not proportionally enhanced with the thickness. Furthermore, the formed anodic layers formed at 50 V/3 h exhibits the highest area capacitance ~ 215 mF cm-2 at 1 mA cm-2, and the capacitance still retained 58.9% of its initial value after 1000 cycles.

Keywords: Nanoporous anodic film, stainless steel, supercapacitance, thickness
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