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Ionic Conductivity of Block Copolymer Electrolytes in the Vicinity of Order−Disorder and Order−Order Transitions
Abstract
Order−order and order−disorder phase transitions in mixtures of poly(styrene- block -ethylene oxide) (SEO) copolymers and lithium bis(trifluoromethylsulfonimide) (LiTFSI), a common lithium salt used in polymer electrolytes, were studied using a combination of small-angle X-ray scattering (SAXS), birefringence, and ac impedance spectroscopy. The SEO/LiTFSI mixtures exhibit lamellar, hexagonally packed cylinders, and gyroid microphases. The molecular weight of the blocks and the salt concentration was adjusted to obtain order−order and order−disorder transition temperatures within the available experimental window. The ionic conductivities of the mixtures, normalized by the ionic conductivity of a 20 kg/mol homopolymer PEO sample at the salt concentration and temperature of interest, were independent of temperature, in spite of the presence of the above-mentioned phase transitions.
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Cited by
Lithium metal anodes for rechargeable batteries
Xu, W., Wang, J., Ding, F., Chen, X., Nasybulin, E., Zhang, Y., & Zhang, J.-G. (2014) · Energy Environ. Sci. · doi:10.1039/c3ee40795k · Cited by 4,704
Poly(ethylene oxide)-based electrolytes for lithium-ion batteries
Xue, Z., He, D., & Xie, X. (2015) · Journal of Materials Chemistry A · doi:10.1039/c5ta03471j · Cited by 2,302
Lin, D., Liu, W., Liu, Y., Lee, H. R., Hsu, P.-C., Liu, K., & Cui, Y. (2016) · Nano Letters · doi:10.1021/acs.nanolett.5b04117 · Cited by 1,012
Ionic liquid polymer electrolytes
Ye, Y.-S., Rick, J., & Hwang, B.-J. (2013) · J. Mater. Chem. A · doi:10.1039/c2ta00126h · Cited by 517
Block copolymer electrolytes for rechargeable lithium batteries
Young, W., Kuan, W., & Epps (2014) · Journal of Polymer Science Part B: Polymer Physics · doi:10.1002/polb.23404 · Cited by 417
Metadata
- Authors
- Wanakule, N. S., Panday, A., Mullin, S. A., Gann, E., Hexemer, A., & Balsara, N. P.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-08-11
- Volume
- 42
- Issue
- 15
- Pages
- 5642-5651
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2048238261
- Cited by
- 183
- References
- 0
- FWCI
- 8.98
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wanakule, N. S., Panday, A., Mullin, S. A., Gann, E., Hexemer, A., & Balsara, N. P. (2009). Ionic Conductivity of Block Copolymer Electrolytes in the Vicinity of Order−Disorder and Order−Order Transitions. Macromolecules. https://doi.org/10.1021/ma900401a
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