New approach to design solid block copolymer electrolytes for 40  °C lithium metal battery operation

Lassagne, A.; Beaudoin, Emmanuel; Ferrand, A.; Phan, Trang N. T.; Davidson, Patrick; Iojoiu, Cristina; Bouchet, Renaud

doi:10.1016/j.electacta.2017.03.221

Cited by 22 publications

(17 citation statements)

References 35 publications

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“…We recently demonstrated that a LMB can work at 40 °C with a BCE composed of PS and a modified linear PEO (Fig. ) . PEO crystallization was strongly reduced by the introduction of irregular moieties along the PEO chain .…”

Section: Dual‐ion Conducting Bcesmentioning

confidence: 99%

“…Chemical structure of BAB triblock copolymer PS‐ b ‐P(modified PEO)‐ b ‐PS proposed as a dual‐ion conducting BCE …”

Section: Dual‐ion Conducting Bcesmentioning

confidence: 99%

“…3). 44 PEO crystallization was strongly reduced by the introduction of irregular moieties along the PEO chain. 45,46 With only 2 wt% of chemical defects homogeneously distributed along the PEO chain, a strong shift of the melting temperature (T m ) of PEO-based domains (<30 ∘ C) was observed.…”

Section: Dual-ion Conducting Bcesmentioning

confidence: 99%

“…45,46 With only 2 wt% of chemical defects homogeneously distributed along the PEO chain, a strong shift of the melting temperature (T m ) of PEO-based domains (<30 ∘ C) was observed. The best material composed of 71 wt% of PEO with a total molecular mass around 28 kg mol 44 and a conductivity of 6.3 × 10 −5 S cm −1 , which is record-breaking for a SPE without solvent. Another solution for increasing the conductivity of PEO-based BCEs was reported by Floudas et al through the introduction of ionic liquid to nanostructured polyisoprene-b-PEO (IEO) diblock copolymers of total M n around 16 and 30 kg mol −1 .…”

Section: Dual-ion Conducting Bcesmentioning

confidence: 99%

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Poly(ethylene oxide)‐based block copolymer electrolytes for lithium metal batteries

Phan

Issa

Gigmès

2018

Polymer International

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Nanostructured block copolymer electrolytes (BCEs) based on poly(ethylene oxide) (PEO) are considered as promising candidates for solid‐state electrolytes in high energy density lithium metal batteries (LMBs). Because of their self‐assembly properties, they confer on electrolytes both high mechanical strength and sufficient ionic conductivity, which linear PEO cannot provide. Two types of PEO‐based BCEs are commonly known. There are the traditional ones, also called dual‐ion conducting BCEs, which are a mixture of block copolymer chains and lithium salts. In these systems, the cations and anions participate in the conduction, inducing a concentration polarization in the electrolyte, thus leading to poor performances of LMBs. The second family of BCEs are single‐lithium‐ion conducting BCEs (SIC‐BCEs), which consist of anions being covalently grafted to the polymer backbone, therefore involving conduction by lithium ions only. SIC‐BCEs have marked advantages over dual‐ion conducting BCEs due to a high lithium ion transference number, absence of anion concentration gradients as well as low rate of lithium dendrite growth. This review focuses on the recent developments in BCEs for applications in LMBs with particular emphasis on the physicochemical and electrochemical properties of these materials. © 2018 Society of Chemical Industry

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Section: Dual‐ion Conducting Bcesmentioning

confidence: 99%

“…Chemical structure of BAB triblock copolymer PS‐ b ‐P(modified PEO)‐ b ‐PS proposed as a dual‐ion conducting BCE …”

Section: Dual‐ion Conducting Bcesmentioning

confidence: 99%

Section: Dual-ion Conducting Bcesmentioning

confidence: 99%

Section: Dual-ion Conducting Bcesmentioning

confidence: 99%

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Poly(ethylene oxide)‐based block copolymer electrolytes for lithium metal batteries

Phan

Issa

Gigmès

2018

Polymer International

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“…Polymer electrolytes are dissolution of numerous salts in homopolymer matrices, 3 –5 polymer blend matrices, 6 –8 copolymer matrices, 9,10 and so on. In most cases, the enhancement of conductivity can be achieved using polymer blend and copolymer instead of homopolymer.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid effect for efficiency improvement in poly(methyl acrylate)/poly(vinyl acetate)-based dye-sensitized solar cells

Winie

Azmar

Rozana

2018

High Performance Polymers

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Polymer electrolytes based on the blends of poly(methyl acrylate) (PMA) and poly(vinyl acetate) (PVAc) were prepared using tetrapropylammonium iodide (TPAI) salt and 1-butyl-3-methylimidazolium iodide (BMII) ionic liquid. Single transition between the glass transition temperatures of the constituents indicates the miscibility of PMA and PVAc over the entire composition range. The presence of TPAI and BMII does not affect the miscibility of PMA and PVAc. The complexation in the PMA/PVAc-TPAI-BMII is supported by the differential scanning calorimetry and Fourier transform infrared spectroscopic studies. Conductivity increases by two order of magnitudes with the incorporation of 5 wt% of BMII. Conductivity increment is due to the extra charge carriers provided by BMII. Electrolyte films were sandwiched between titanium dioxide photoanode and platinum counter electrode for dye-sensitized solar cells (DSSCs) assembly. The addition of BMII increases the efficiency of DSSC from 2.79% to 4.62%.

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Solid‐State Batteries with Polymer Electrolytes

Iojoiu

Paillard

2020

Encyclopedia of Electrochemistry

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Expectations on solid‐state lithium batteries are at their highest as they are seen as a “next‐generation” technology, although solid polymer electrolytes have already enabled the commercialization of electrical vehicles for almost 10 years. These are powered by lithium metal batteries and use a polyethylene oxide (PEO)‐based electrolyte. Thus, after a quick review of the current state of the art on lithium batteries including various polymers electrolytes, we present some fundamentals about the lithium metal anode. We then give an overview of the different approaches that have been proposed in the past 40 years for improving the performance of these types of electrolytes. The trends that have led to the current generation of solid polymer electrolytes are reported first: They consisted in decreasing the crystallinity of PEO and increasing its chain segmental mobility while preventing electrolyte creeping at high temperature, and the use of plasticizers, fillers, statistical copolymers, and branched polymers such as cross‐linked and comb‐shaped polymers was developed. However, PEO and “dry” solid polymer electrolytes incorporating dissolved lithium salts, in general, suffer from intrinsic limitations. Thus, we then present as perspectives, the most promising polymer electrolyte concepts for improving lithium metal polymer batteries. In particular, the use of polycarbonates as alternative polymer matrixes, the use of polymers in hybrid organic/inorganic electrolytes, the use of block copolymers and liquid crystals for decorrelating conductivity from mechanical properties, and finally, the development of single‐ion conductors.

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New approach to design solid block copolymer electrolytes for 40 °C lithium metal battery operation

Cited by 22 publications

References 35 publications

Poly(ethylene oxide)‐based block copolymer electrolytes for lithium metal batteries

Poly(ethylene oxide)‐based block copolymer electrolytes for lithium metal batteries

Ionic liquid effect for efficiency improvement in poly(methyl acrylate)/poly(vinyl acetate)-based dye-sensitized solar cells

Solid‐State Batteries with Polymer Electrolytes

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