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Effect of Ion Distribution on Conductivity of Block Copolymer Electrolytes
Abstract
Energy-filtered transmission electron microscopy (EFTEM) was used to determine the distribution of lithium ions in solid polymer electrolytes for lithium batteries. The electrolytes of interest are mixtures of bis(trifluoromethane)sulfonimide lithium salt and symmetric poly(styrene-block-ethylene oxide) copolymers (SEO). In contrast to current solid and liquid electrolytes, the conductivity of SEO/salt mixtures increases with increasing molecular weight of the copolymers. EFTEM results show that the salt is increasingly localized in the middle of the poly(ethylene oxide) (PEO) lamellae as the molecular weight of the copolymers is increased. Calculations of the inhomogeneous local stress field in block copolymer microdomains, modeled using self-consistent field theory, provide a quantitative explanation for this observation. These stresses, which increase with increasing molecular weight, interfere with the ability of PEO chains to coordinate with lithium cations near the walls of the PEO channels where ion mobility is expected to be low.
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Kreuer, K.-D., Paddison, S. J., Spohr, E., & Schuster, M. (2004) · Chemical Reviews · doi:10.1021/cr020715f · Cited by 2,187
Cited by
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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
Pathways for practical high-energy long-cycling lithium metal batteries
Liu, J., Bao, Z., Cui, Y., Dufek, E. J., Goodenough, J. B., Khalifah, P., Li, Q., Liaw, B. Y., Liu, P., Manthiram, A., et al. (2019) · Nature Energy · doi:10.1038/s41560-019-0338-x · Cited by 3,412
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
Electrolytes for solid-state lithium rechargeable batteries: recent advances and perspectives
Quartarone, E., & Mustarelli, P. (2011) · Chemical Society Reviews · doi:10.1039/c0cs00081g · Cited by 1,607
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
Metadata
- Authors
- Gomez, E. D., Panday, A., Feng, E. H., Chen, V., Stone, G. M., Minor, A. M., Kisielowski, C., Downing, K. H., Borodin, O., Smith, G. D., & Balsara, N. P.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-02-04
- Volume
- 9
- Issue
- 3
- Pages
- 1212-1216
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2028196465
- Cited by
- 263
- References
- 1
- FWCI
- 9.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- Gomez, E. D., Panday, A., Feng, E. H., Chen, V., Stone, G. M., Minor, A. M., Kisielowski, C., Downing, K. H., Borodin, O., Smith, G. D., & Balsara, N. P. (2009). Effect of Ion Distribution on Conductivity of Block Copolymer Electrolytes. Nano Letters. https://doi.org/10.1021/nl900091n
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