Nanoporous copper as an inexpensive electrochemical actuator responsive to sub-volt voltages
| Autor: | Fugen Wu, Chi Zhang, Qingguo Bai, Fuquan Tan, Zhonghua Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanoporous copper Alloy Oxide chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry Electrochemistry 01 natural sciences Metal lcsh:Chemistry chemistry.chemical_compound Composite material Reversible strain Nanoporous Strain rate 021001 nanoscience & nanotechnology Copper 0104 chemical sciences Dealloying chemistry lcsh:Industrial electrochemistry lcsh:QD1-999 visual_art visual_art.visual_art_medium engineering Noble metal 0210 nano-technology Actuator Metallic actuator lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 124, Iss, Pp 106940-(2021) |
| ISSN: | 1388-2481 |
| Popis: | Metallic actuator materials have been comprehensively studied during the last twenty years, but the studies have been limited to noble metals to date. Here we report reversible dimensional changes in nanoporous copper made by dealloying an Al-Cu alloy. A strain amplitude of 0.11% is obtained using square wave voltammetry in 5 M NaOH, which is comparable to the values reported for a noble metal such as Pt under electrochemical conditions. The oxide formed on the ligaments is believed to stabilize the mechanical properties during the actuation process. Our findings indicate that nanoporous Cu could be a good candidate material for low-cost electrochemical actuator applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect