Anion-trapping and polyanion electrolytes based on acid-in-chain borate polymers

Wu Xu; Xiao Guang Sun; C. Austen Angell

doi:10.1016/S0013-4686(03)00212-3

Anion-trapping and polyanion electrolytes based on acid-in-chain borate polymers

Wu Xu, Xiao Guang Sun, C. Austen Angell

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Oligoether branched-and-spaced "acid-in-chain" polymers, with variable length side chains attached to the acidic borons have been prepared by a simple two-step reaction sequence. These may be used as anion-retarding hosts for "salt-in-polymer" electrolytes or, alternatively, may be converted to polyanionic electrolytes by reacting with strong Lewis base anions. High ionic conductivities, reaching 7.6×10^-5 S cm^-1 at 25°C have been obtained for the former case, using LiTFSI:B proportions of 1:1, and optimized side chain and spacer lengths. The electrochemical windows are wide enough (>4.5 V) for most applications.

Original language	English
Pages (from-to)	2255-2266
Number of pages	12
Journal	Electrochimica Acta
Volume	48
Issue number	14-16 SPEC.
DOIs	https://doi.org/10.1016/S0013-4686(03)00212-3
State	Published - Jun 30 2003
Externally published	Yes

Funding

This work was supported by Mitsubishi Chemical Corporation. We acknowledge also Dr. M.D. Williams and Dr. R.A. Nieman in the NMR Laboratory of the Department for analyses on 11 B nuclei under US NSF grant #CHE-9808678.

Funders	Funder number
Mitsubishi Chemical Corporation

Keywords

Acid-in-chain
Anion-trapping
Borate polymers

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10.1016/S0013-4686(03)00212-3

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AU - Sun, Xiao Guang

AU - Austen Angell, C.

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N2 - Oligoether branched-and-spaced "acid-in-chain" polymers, with variable length side chains attached to the acidic borons have been prepared by a simple two-step reaction sequence. These may be used as anion-retarding hosts for "salt-in-polymer" electrolytes or, alternatively, may be converted to polyanionic electrolytes by reacting with strong Lewis base anions. High ionic conductivities, reaching 7.6×10-5 S cm-1 at 25°C have been obtained for the former case, using LiTFSI:B proportions of 1:1, and optimized side chain and spacer lengths. The electrochemical windows are wide enough (>4.5 V) for most applications.

AB - Oligoether branched-and-spaced "acid-in-chain" polymers, with variable length side chains attached to the acidic borons have been prepared by a simple two-step reaction sequence. These may be used as anion-retarding hosts for "salt-in-polymer" electrolytes or, alternatively, may be converted to polyanionic electrolytes by reacting with strong Lewis base anions. High ionic conductivities, reaching 7.6×10-5 S cm-1 at 25°C have been obtained for the former case, using LiTFSI:B proportions of 1:1, and optimized side chain and spacer lengths. The electrochemical windows are wide enough (>4.5 V) for most applications.

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Anion-trapping and polyanion electrolytes based on acid-in-chain borate polymers

Abstract

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Keywords

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