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http://dx.doi.org/10.6111/JKCGCT.2020.30.5.189

Fabrication of flexible sponge electrodes using Ag nanowires  

Park, Kyoung Ryeol (Department of Materials Science and Engineering, Hanyang University)
Yoo, Sehoon (Korea Institute of Industrial Technology)
Ryu, Jeong Ho (Department of Materials Science and Engineering, Korea National University of Transportation)
Mhin, Sungwook (Department of Advanced Materials Engineering, Kyonggi University)
Abstract
Recently, various methods for preparing a flexible electrode for implementing a wearable sensor have been introduced. Wearable sensors show similar tendency to use various polymer substrates, which provides elasticity suitable to the motion of human body. In this paper, a highly elastic silver nanowire based electrode was prepared on a sponge-based stretchable substrate, and electrical properties were evaluated. Silver nanowires were grown using a wet chemical synthesis, impregnated into a plasma-treated sponge, and then heat treated at a low temperature. In particular, the plasma surface treatment of the sponge enables uniform coating of silver nanowires. The flexible sponge electrode showed reliable electrical resistance changes over 160 repeated tensile-compression cycles.
Keywords
Ag nanowire; Sponge; Flexible substrate; Electrodes; Plasma treatment;
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