Solvation of lithium salts within single-phase dimethyl siloxane bisphenol-A carbonate block copolymer

Spiegel, E.F.; Adamić, K.; Williams, B.D.; Sammells, Anthony F.

doi:10.1016/s0032-3861(99)00535-2

Cited by 11 publications

(4 citation statements)

References 10 publications

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“…After doping with LiTFSI they also observed ionic conductivities of around 10 -5 S cm −1 at 20 °C, indicating that the variation of the different blocks did not have a significant effect on the charge transport. However, at 25 °C inferior conductivities in the range of 10 -6 S cm −1 and below were reported by Spiegel et al [99] for an AB-type poly (dimethylsiloxane)-b-poly(bisphenol A carbonate) (PDMS-b-PBPA) di-BCP doped with LiCF 3 SO 3 despite the addition of a plasticizer (triacetoxy(methyl)silane), which the authors assigned to the very rigid nature of the aromatic PBPA block. Another interesting finding was reported by Armand and coworkers [100], who studied a poly(iminoethylene)-b-poly (ethylene oxide)-b-poly(iminoethylene) (PEI-b-PEO-b-PEI) ABA tri-BCP in order to investigate the behavior of the nitrogen analogue (i.e.…”

Section: Brief Overview and Initial Developmentmentioning

confidence: 65%

Block copolymers as (single-ion conducting) lithium battery electrolytes

et al. 2021

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Solid-state batteries are considered the next big step towards the realization of intrinsically safer high-energy lithium batteries for the steadily increasing implementation of this technology in electronic devices and particularly, electric vehicles. However, so far only electrolytes based on poly(ethylene oxide) have been successfully commercialized despite their limited stability towards oxidation and low ionic conductivity at room temperature. Block copolymer (BCP) electrolytes are believed to provide significant advantages thanks to their tailorable properties. Thus, research activities in this field have been continuously expanding in recent years with great progress to enhance their performance and deepen the understanding towards the interplay between their chemistry, structure, electrochemical properties, and charge transport mechanism. Herein, we review this progress with a specific focus on the block-copolymer nanostructure and ionic conductivity, the latest works, as well as the early studies that are fr"equently overlooked by researchers newly entering this field. Moreover, we discuss the impact of adding a lithium salt in comparison to single-ion conducting BCP electrolytes along with the encouraging features of these materials and the remaining challenges that are yet to be solved.

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Section: Brief Overview and Initial Developmentmentioning

confidence: 65%

Block copolymers as (single-ion conducting) lithium battery electrolytes

et al. 2021

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“…Due to the high T g and restricted Li + migration of polycarbonates containing rigid aromatic groups, the corresponding polymer electrolytes cannot provide a satisfying ionic conductivity 48 . Thus, aliphatic polycarbonates with more flexible backbones are preferred for LIBs, including poly(ethylene carbonate) (PEC), poly(propylene carbonate) (PPC), poly(trimethylene carbonate) (PTMC), poly(fluoroethylene carbonate) (PFEC) and their derivatives.…”

Section: Novel Polymer Matrix Beyond Peo For Polymer Electrolytes‐bas...mentioning

confidence: 99%

Advances in host selection and interface regulation of polymer electrolytes

Wang

Zhang

et al. 2021

Journal of Polymer Science

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Polymer electrolyte (PE) has been emerging as a promising alternative to liquid electrolytes due to the unique advantages such as excellent flexibility and processability, high chemical and thermal stability, and low risk of leakage and combustion, especially for lithium‐ion batteries (LIBs). Even though abundant attempts focusing on polymer chemistries have been made, the inadequate capacity of lithium‐ion transport via segmental motion still cannot provide satisfying room temperature ionic conductivity and lithium‐ion transference number. In addition, safety concerns and short lifespan resulted from the brittle and incompatible interface between the electrode and polymer materials also hinder the commercialization of PEs‐based LIBs. Hence, for the above performance defects and interface issues, this review provides an overview of polymer electrolytes from the conductivity improvement, polymer selection and mechanical strength enhancement for protrusion suppressing. The improvement of conductivity specifically includes structure modification of poly(ethylene oxide) (PEO) host and novel electrolyte matrix beyond PEO, while the section of interface regulation mainly involves dendrite‐inhibited polymers, mechanical strengthening, and in situ polymerization. Finally, perspectives and challenges are pointed out in the development of polymer electrolytes with both excellent electrochemical performance and safety for LIBs.

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“…As a commercially available polymeric material, PC made from bisphenol A (Scheme 1A) exhibits high strength, toughness, and good durability. However, bisphenol A PC without any modifications cannot be utilized as an HSE, due to its low ambient temperature ionic conductivity of 7 × 10 −9 S/cm (Spiegel et al, 2000). The T g of PCs made from bisphenol A is typically above 100 • C (i.e., T g of Lexan is 145 • C) (Yang and Yetter, 1994) due to the rigid phenol group in the backbone.…”

Section: Hybrid Solid Electrolytes Polymer Matrixmentioning

confidence: 99%

Recent Developments and Challenges in Hybrid Solid Electrolytes for Lithium-Ion Batteries

et al. 2020

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Lithium-ion batteries (LIBs) have attracted worldwide research interest due to their high energy density and long cycle life. Solid-state LIBs improve the safety of conventional liquid-based LIBs by replacing the flammable organic electrolytes with a solid electrolyte. Among the various types of solid electrolytes, hybrid solid electrolytes (HSEs) demonstrate great promise to achieve high ionic conductivity, reduced interfacial resistance between the electrolyte and electrodes, mechanical robustness, and excellent processability due to the combined advantages of both polymer and inorganic electrolyte. This article summarizes recent developments in HSEs for LIBs. Approaches for the preparation of hybrid electrolytes and current understanding of iontransport mechanisms are discussed. The main challenges including unsatisfactory ionic conductivity and perspectives of HSEs for LIBs are highlighted for future development. The present review provides insights into HSE development to allow a more efficient and target-oriented future endeavor on achieving high-performance solid-state LIBs.

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Solvation of lithium salts within single-phase dimethyl siloxane bisphenol-A carbonate block copolymer

Cited by 11 publications

References 10 publications

Block copolymers as (single-ion conducting) lithium battery electrolytes

Block copolymers as (single-ion conducting) lithium battery electrolytes

Advances in host selection and interface regulation of polymer electrolytes

Recent Developments and Challenges in Hybrid Solid Electrolytes for Lithium-Ion Batteries

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