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Electrochemical Deposition of Porous Co(OH)2 Nanoflake Films on Stainless Steel Mesh for Flexible Supercapacitors

Journal Article


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Abstract


  • Flexible porous Co(OH)2 nanoflake films were prepared by galvanostatic electrodeposition on lightweight and inexpensive stainless steel mesh. The as-prepared porous Co(OH)2 nanoflake films were characterized by X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. Electrochemical tests including cyclic voltammetry, constant current charge-discharge, and electrochemical impedance spectroscopy were also used to investigate the electrochemical performance. The results show that the highest capacitance is 609.4 F g-1, the specific capacitance decreases by less than 5% as the mass loading of Co(OH)2 increases by more than 340%, and the specific capacitance only decreases by less than 15% when the current densities increase up to 10 times, indicating the good high-rate performance. The electrochemically active specific surface area of the annealed porous Co(OH)2 nanoflake films remained virtually unchanged after 3000 cycles, showing the stability of the microstructure.

Publication Date


  • 2008

Citation


  • Chou, S., Wang, J., Liu, H. K. & Dou, S. Xue. (2008). Electrochemical Deposition of Porous Co(OH)2 Nanoflake Films on Stainless Steel Mesh for Flexible Supercapacitors. Journal of Electrochemical Society, 155 (12), A926-A929.

Scopus Eid


  • 2-s2.0-54949152357

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6953&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4022

Has Global Citation Frequency


Start Page


  • A926

End Page


  • A929

Volume


  • 155

Issue


  • 12

Place Of Publication


  • United States

Abstract


  • Flexible porous Co(OH)2 nanoflake films were prepared by galvanostatic electrodeposition on lightweight and inexpensive stainless steel mesh. The as-prepared porous Co(OH)2 nanoflake films were characterized by X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. Electrochemical tests including cyclic voltammetry, constant current charge-discharge, and electrochemical impedance spectroscopy were also used to investigate the electrochemical performance. The results show that the highest capacitance is 609.4 F g-1, the specific capacitance decreases by less than 5% as the mass loading of Co(OH)2 increases by more than 340%, and the specific capacitance only decreases by less than 15% when the current densities increase up to 10 times, indicating the good high-rate performance. The electrochemically active specific surface area of the annealed porous Co(OH)2 nanoflake films remained virtually unchanged after 3000 cycles, showing the stability of the microstructure.

Publication Date


  • 2008

Citation


  • Chou, S., Wang, J., Liu, H. K. & Dou, S. Xue. (2008). Electrochemical Deposition of Porous Co(OH)2 Nanoflake Films on Stainless Steel Mesh for Flexible Supercapacitors. Journal of Electrochemical Society, 155 (12), A926-A929.

Scopus Eid


  • 2-s2.0-54949152357

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6953&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4022

Has Global Citation Frequency


Start Page


  • A926

End Page


  • A929

Volume


  • 155

Issue


  • 12

Place Of Publication


  • United States