Document Type

Article

Publication Date

1-13-2021

Abstract

Compared to flat devices based on rigid substrates, cable-shaped dye-sensitized solar cells hold advantages of smaller size, light weight, facile fabrication, flexibility, and low cost, thus a promising direction for applications such as wearable electronic devices. However, most reported fiber-shaped dye-sensitized solar cells use Pt wires as counter electrodes, which are high in cost. Herein, a flexible Pt-free counter electrode is fabricated via depositing ternary nickel cobalt selenide (Ni–Co–Se) particles on the surface of carbon fibers. Scanning electron microscopy and X-ray diffraction are used to characterize the counter electrode and alloy material. Results from bare and modified carbon fiber counter electrodes reveal that Ni–Co–Se alloy particles greatly enhance electrocatalytic activity, leading to significant improvement in power conversion efficiency, which is comparable with devices using carbon fiber coated with Pt as the counter electrode. The performance increase may be attributed to the improved catalytic property of CoSe2 due to its higher composition ratio and larger crystallite size. Bending and multiple irradiation cycling tests are also performed to show the superior flexibility and durability of the novel device.

Comments

© 2021 American Chemical Society. Original published version available at https://doi.org/10.1021/acsaem.0c02764

Publication Title

ACS Applied Energy Materials

DOI

10.1021/acsaem.0c02764

Included in

Chemistry Commons

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.