کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1443911 | 1509482 | 2006 | 5 صفحه PDF | دانلود رایگان |
A free-standing polypyrrole (PPy) film actuator, prepared electrochemically from a methyl benzoate solution of 1,2-dimethyl-3-propylimidazolium tris(trifluoromethylsulfonyl)methide (DMPIMe), exhibited up to 36.7% electrochemical strain in a propylene carbonate (PC)/water solution of lithium bis(nonafluorobutylsulfonyl)imide, Li(C4F9SO2)2N (LiNFSI). The maximum electrochemical strain of Me-doped PPy film depended on the electrolyte used for driving the Me-doped PPy actuator. When a PC/water mixed solution of lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) was used as the driving electrolyte, the maximum electrochemical strain, measured by cycling between −0.9 and +0.7 V versus Ag/Ag+ at 2 mV s−1, was 24.2%, smaller than that (30.0%) driven with LiNFSI. When a PC/water suspension of DMPIMe was used as the driving electrolyte, the maximum electrochemical strain was 31.9%. However, the response speed of Me-doped PPy actuator driven with DMPIMe was slower than those driven with Li(CnF2n+1SO2)2N, due presumably to the size and shape of the anions. The addition of CF3COOH in electrolytic solutions for electropolymerization increased the maximum electrochemical strains (36.7% and 36.6%) of Me-doped PPy actuator driven by using a PC/water solution of LiNFSI and a PC solution of DMPIMe, respectively.
A polypyrrole tube doped with tris(trifluoromethylsulfonyl)methide (Me) prepared on a carbon rod at +1.2 V versus Ag/AgCl from a methyl benzoate solution of DMPIMe with CF3COOH. Figure optionsDownload as PowerPoint slide
Journal: Synthetic Metals - Volume 156, Issues 2–4, 1 February 2006, Pages 351–355