Application of Electrochemical Impedance for Characterising Arrays of Bi2S3 Nanowires

作者：Kunakova Gunta^*; Katkevics Juris; Viksna Arturs; Gertnere Zanda; Varghese Justin; Holmes Justin D; Erts Donats

来源：Electrochimica Acta, 2015, 170: 33-38.

DOI：10.1016/j.electacta.2015.04.021

• Electrochemical Impedance Spectroscopy
• Nanowire
• Bismuth sulphide
• Anodic aluminium oxide

Electrochemical Impedance Spectroscopy (EIS) was used to characterise the electrical properties of bismuth sulphide (Bi2S3) nanowires (NWs) templated within anodic aluminium oxide (AAO) membranes. A specially engineered cell, with a nominal electrolyte volume of 0.1-0.2 ml, was used to hold and measure the electrochemical impedance of the fragile NW/AAO samples. An equivalent circuit model was developed to determine the filling density of nanowires within the porous templates. The EIS method can be utilised to probe the nanowire filling density in porous membranes over large sample areas, which is often unobtainable using electron microscopy and conductive atomic force microscopy techniques.

• 出版日期2015-7-10