Poly(ethylene oxide carbonates) solid polymer electrolytes for lithium batteries

Meabe, Leire; Huynh, Tan Vu; Lago, Nerea; Sardón, Haritz; Li, Chunmei; O’Dell, Luke A.; Armand, Michel; Forsyth, Maria; Mecerreyes, David

doi:10.1016/j.electacta.2018.01.101

Cited by 93 publications

(73 citation statements)

References 32 publications

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“…As an example, a series of poly(ethylene oxide carbonates) (PEO/PCs) were synthesized by polycondensation between different ethylene oxide diols and dimethyl carbonate. These PEO/PC systems were formulated as SPEs by adding different amounts of LiTFSI . The concentration of LiTFSI was varied within the polymer resulting in a t Li+ of 0.59 and the highest ionic conductivity of 1.3 × 10 −3 S cm −1 at 70 °C.…”

Section: Ionic Polymer‐based Solid‐state Electrolytesmentioning

confidence: 99%

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

et al. 2020

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201905219.With increasing demands for safe, high capacity energy storage to support personal electronics, newer devices such as unmanned aerial vehicles, as well as the commercialization of electric vehicles, current energy storage technologies are facing increased challenges. Although alternative batteries have been intensively investigated, lithium (Li) batteries are still recognized as the preferred energy storage solution for the consumer electronics markets and next generation automobiles. However, the commercialized Li batteries still have disadvantages, such as low capacities, potential safety issues, and unfavorable cycling life. Therefore, the design and development of electromaterials toward high-energy-density, long-life-span Li batteries with improved safety is a focus for researchers in the field of energy materials. Herein, recent advances in the development of novel organic electrolytes are summarized toward solid-state Li batteries with higher energy density and improved safety. On the basis of new insights into ionic conduction and design principles of organic-based solid-state electrolytes, specific strategies toward developing these electrolytes for Li metal anodes, high-energy-density cathode materials (e.g., high voltage materials), as well as the optimization of cathode formulations are outlined. Finally, prospects for next generation solid-state electrolytes are also proposed.

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Section: Ionic Polymer‐based Solid‐state Electrolytesmentioning

confidence: 99%

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

et al. 2020

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“…Polycarbonate SPEs showed similar ionic conductivity values at high temperature but superior at room temperature as well as higher lithium transference numbers ( T Li ≥ 0.5) than PEO which has allowed the room temperature operation of lithium‐ion batteries. In Figure we show some chemical structures that we recently reported synthesized polycondensation as well as step‐growth using CO 2 as reagent, respectively …”

Section: Polymer Electrolytesmentioning

confidence: 99%

Innovative Polymers for Next‐Generation Batteries

Mecerreyes

Porcarelli

Casado

2020

Macro Chemistry & Physics

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Lithium‐ion batteries are part of modern life, being present in daily‐used objects such as mobile phones, tablets, computers, watches, sport accessories, electric scooters, and cars. The next‐generation batteries require the development of innovative polymers that help to improve their performance in terms of power density, cyclability, raw materials' availability, low weight, printability, flexibility, sustainability, or security. This article highlights recent developments in the area of redox‐active, electronic/ionic conducting polymers. This includes the development of innovative binders for electrodes, polymer electrolytes, and redox polymers. All these new polymer developments are leading to new battery technologies such as metal–polymer batteries, organic batteries, polymer–air, and redox–flow batteries, which are expected to complement the current lithium‐ion technologies in the future.

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“…Due to the high crystallinity of PEO, PEO‐based SPEs have a low ionic conductivity (10 −8 –10 −7 S cm −1 ) at room temperature, which does not meet the requirement for ionic conductivity (>10 −4 S cm −1 at room temperature) of electrolytes with promising applications. [ 33,36,37 ] Many strategies, such as adding inorganic nanoparticles, [ 38–40 ] blending, [ 41 ] copolymerization, [ 42 ] and crosslinking [ 43–45 ] have been adopted to effectively suppress the crystallization of PEO and improve the ionic conductivity of PEO‐based SPEs. Coat et al [ 46 ] reported the synthesis of poly(diethylene oxide‐alt‐oxymethylene) (P(2EO‐MO)) as a polymer matrix for SPE, which has higher T g than that of PEO in the electrolyte.…”

Section: Figurementioning

confidence: 99%

Investigation on the Copolymer Electrolyte of Poly(1,3‐dioxolane‐co‐formaldehyde)

Liu

Yang

et al. 2020

Macromol. Rapid Commun.

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have been found in preventing the pen etration of Li dendrites. [15][16][17] However, the excessive interfacial resistance and the complex processing art of inorganic SSEs limit their practical application. [18][19][20] Solid polymer electrolytes (SPEs), on the other hand, can offer good flexibility and stable contact between the electrodes and electrolytes. [20][21][22][23] Several types of polymer matrices have been developed, such as poly(ethyleneoxide) (PEO), [24][25][26] poly carbonate, [27][28][29] and polysiloxane. [30][31][32] SPEs are prepared by mixing polymer matrices with Li salts. PEO is the most popular and deeply studied polymer matrix, [33] and the ethylene oxide chain segments in PEO can dissolve Li salts as well as form complexes with Li + and dis sociated Li salts. [34] Li + is conducted by repeatedly carrying out a "decomplexa tion-recomplexation" process through the movement of chain segments in an amorphous polymer region. [35] The movement of chain segments in an amorphous polymer region is affected by the glass transition temperature (T g ) and crystallinity. Low T g and crystallinity are beneficial for the move ment of chain segments as well as the ionic conductivity. Due to the high crystallinity of PEO, PEObased SPEs have a low ionic conductivity (10 −8 -10 −7 S cm −1 ) at room temperature, which does not meet the requirement for ionic conductivity (>10 −4 S cm −1 at room temperature) of electrolytes with prom ising applications. [33,36,37] Many strategies, such as adding inorganic nanoparticles, [38][39][40] blending, [41] copolymerization, [42] and crosslinking [43][44][45] have been adopted to effectively sup press the crystallization of PEO and improve the ionic conduc tivity of PEObased SPEs. Coat et al. [46] reported the synthesis of poly(diethylene oxidealtoxymethylene) (P(2EOMO)) as a polymer matrix for SPE, which has higher T g than that of PEO in the electrolyte. They found the P(2EOMO)/LiTFSI electro lyte exhibits a slightly lower ionic conductivity due to higher T g , but much higher Li ion transference number can be obtained in P(2EOMO)/LiTFSI electrolyte (0.36) than that in PEO/ LiTFSI (0.19). So tailoring the main chain structure is the most feasible way to optimize the performance of SPEs.Recently, the strategy of in situ polymerizing SPEs in the batteries has attracted extensive attention due to the ability to construct stable ionic conduction networks inside the electrodes to reduce the interfacial resistance, the biggest challenge faced by most SSEs. Cui et al. [13] in situ prepared A series of copolymers are prepared via cationic ring-opening polymerization with 1,3-dioxolane (DOL) and trioxymethylene (TOM) as monomers. The crystallization behaviors of the copolymers can be suppressed by adjusting the ratio of DOL/TOM. With LiBF 4 as a source for a BF 3 initiator, copolymer electrolytes (CPEs) can be prepared in situ inside cells without needing nonelectrolyte catalysts or initiators. The ionic conductivities and Li + diffusion coefficients (D Li + ) of the CPEs inc...

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Poly(ethylene oxide carbonates) solid polymer electrolytes for lithium batteries

Cited by 93 publications

References 32 publications

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

Toward High‐Energy‐Density Lithium Metal Batteries: Opportunities and Challenges for Solid Organic Electrolytes

Innovative Polymers for Next‐Generation Batteries

Investigation on the Copolymer Electrolyte of Poly(1,3‐dioxolane‐co‐formaldehyde)

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