05 May What could you do with single-ion monomers and polymers? Cedric Loubat’s conference 2023 – BATTERY 2030+

Indeed, for more than 5 years, SPECIFIC POLYMERS has been contributing to the development of tomorrow’s lithium batteries through the production of a large range of monomeric and polymeric lithium salts, conductive polymers, additives and plasticizers.

Why using solid state batteries?

As lithium-ion batteries have been the state-of-the-art electrochemical energy storage technology, the overwhelming demand for energy storage on a larger scale has triggered the development of next-generation battery technologies possessing high energy density, longer cycle lives, and enhanced safety. However, commercial liquid electrolytes have been plagued by safety issues due to their flammability and instability in contact with electrodes, efforts have focused on developing such electrolytes by covalently immobilizing anionic groups onto a polymer backbone, which only allows Li + cations to be mobile through the polymer matrix. Such ion-selective polymers provide many advantages over binary ionic conductors in battery operation, such as minimization of cell polarization and dendrite growth.

Figure [1] – Single-ion conducting polymer electrolytes as a key jigsaw piece for next-generation battery applications

SPECIFIC POLYMERS gives access to single-ion conductors (SICs) by commercializing functional monomers and polymers bearing LiTFSI group. SIC has advantages over binary-ion conductors such as their high ionic selectivity against lithium approaching unity, their high oxidation voltage (>4.0V) as well as their resistance to dendrite formation since SICs allow lithium plating and stripping evenly during the charging/discharging process.

Figure [2] – Single-ion conducting polymer electrolytes as a key jigsaw piece for next-generation battery applications

Single-ion monomers by SPECIFIC POLYMERS : the applications

SPECIFIC POLYMERS has been commercializing for 7 years methacrylic and styrenic-based monomers LiTFSI monomers namely MTFSILi (SP-49-023) and STFSILi (SP-59-011), as promising precursors. Indeed, TFSI moiety is considered as the best candidate for Li salt in lithium batteries and LiTFSI is highly soluble in the usual solvents.

What could you do with Single Ion Monomers?

Single-ion polymers by SPECIFIC POLYMERS : the applications

For 3 years, SPECIFIC POLYMERS has been offering to the whole battery science community single ion conductive polymer electrolyte. The TFSI homopolymer is known under the reference PMTFSILi (SP-4P-6-004).

What could you do with Single Ion Polymers?

References

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[14] Z. Li et al., A single ion polymer electrolyte via copolymerization of lithium (4-Styrenesulfonyl)(Trifluoromethanesulfonyl)imide and allyl Poly(Aryl ether Ketone) enables safe lithium ion, Applied Surface Science, Volume 611, Part A, 2023, 155363 >

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[18] Patent Application Publication, No.: US 2021/0135290 A1, Applicant: Samsung Electronics Co., Ltd., Suwon-si (KR) >