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Blending of hard and soft organic–inorganic hybrids for use as an effective electrolyte membrane in lithium-ion batteries.
- Source :
-
Journal of Membrane Science . Apr2016, Vol. 503, p59-68. 10p. - Publication Year :
- 2016
-
Abstract
- In this study, two unique organic–inorganic hybrids are synthesized and optimized to obtain a new type of hybrid blend membrane. A soft hybrid is obtained from reaction of polyetheramine (M-2070) and (3-glycidyloxypropyl)trimethoxysilane (GLYMO), whereas a hard hybrid is prepared from reactions of polyetherdiamine (ED2003), poly(ethylene glycol) diglycidyl ether (PEGDGE) and GLYMO. Both hybrids are finally blended with poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-HFP)) to get the hybrid blend membrane and plasticized with 1 M LiPF 6 in EC/DEC. The successful synthesis of the hybrid blend membrane structure is established from 13 C and 29 Si solid-state NMR spectroscopy. FTIR results reveal the interactions of different groups of the hybrid blend membrane. The hybrid blend electrolyte possesses maximum ionic conductivity value of 6.9 mS cm −1 at 30 °C and is electrochemically stable up to 5 V. The electrochemical performance of the hybrid blend electrolyte assemble in a battery cell with the LiFePO 4 cathode exhibits a good cycle life of over 200 cycles with an initial discharge capacity of 150 mA h g −1 . In addition, coulombic efficiency of 97–99% is maintained for the whole cycles. Our results demonstrate that the present hybrid blend electrolyte can be a potential candidate serving as an effective electrolyte in lithium-ion batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03767388
- Volume :
- 503
- Database :
- Academic Search Index
- Journal :
- Journal of Membrane Science
- Publication Type :
- Academic Journal
- Accession number :
- 112674764
- Full Text :
- https://doi.org/10.1016/j.memsci.2015.12.024