Abstract
Synthesis of phosphorus containing polyethers and their lithium-ion conductivities for the potential use as solid polymer electrolyte (SPE) in high-energy density lithium-ion batteries have been described. Co-polymerization of butyl bis(hydroxymethyl)phosphine oxide with three different dibromo monomers were carried out to produce three novel phosphorous containing polyethers (P1–P3). These polymers were obtained via nucleophilic substitution reactions and were characterized by 1H, 31P NMR spectral data and gel permeation chromatography. SPEs were prepared using polyethers (P1 and P2) with various amounts of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). The lithium-ion conductivity of SPE2 containing 40 wt% of LiTFSI was 2.1 × 10−5 S cm−1 at room temperature and 3.7 × 10−4 S cm−1 at 80°C.
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Acknowledgements
HVB is thankful to CSIR India for a fellowship. The authors acknowledge the DST, India for financial support of the DST fast track project No. SR/FTP/CS-60/2007.
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TGA, DSC and nyquist plots of SPE2, 1H, 13C and 31P NMR of M1 and M2, 1H and 31P NMR of P1–P3 are available at www.ias.ac.in/chemsci.
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BABU, H.V., SRINIVAS, B., KUMAR NAIK, K.P. et al. Polymerization behaviour of butyl bis(hydroxymethyl)phosphine oxide: Phosphorus containing polyethers for Li-ion conductivity. J Chem Sci 127, 635–641 (2015). https://doi.org/10.1007/s12039-015-0819-9
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DOI: https://doi.org/10.1007/s12039-015-0819-9