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Raman spectra of (a) PEO pure film, (b) PEO25·Mg(Tf)2 complex, and PEO25·Mg(Tf)2 + x wt % EMITf system for (c) x = 5, (d) x = 10, (e) x = 20, and (f) x = 30 for spectral region of 1000–1080 cm−1. Reproduced with permission from Electrochim. Acta, 56, Kumar et al. Ionic liquid mediated magnesium ion conduction in poly(ethylene oxide) based polymer electrolyte, 3864–3873, 2011 [103].
