Jeffamine® based polymers as highly conductive polymer electrolytes and cathode binder materials for battery application

Aldalur, Itziar; Zhang, Heng; Piszcz, Michał; Oteo, Uxue; Rodrı́guez-Martı́nez, Lide M.; Shanmukaraj, Devaraj; Rojo, Teófilo; Armand, Michel

doi:10.1016/j.jpowsour.2017.02.047

Cited by 80 publications

(62 citation statements)

References 32 publications

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“…87 °C, which is related to the amorphous fraction within polystyrene having molecular weight below 10 4 g mol −1 . The polyether fraction has glass transition at −62 °C, which is typical for Jeffamine side chains as described in our previous publications ,. The values of T g for Jeffamine and PS blocks in the copolymer are very close to the respective ones in the homopolymers, e. g., −62 °C (Jeffamine in BCP) vs. ‐61 °C (Jeffamine in homopolymer) and 86 °C (PS in BCP) vs. 87 °C (PS in homopolymer).…”

Section: Resultssupporting

confidence: 74%

“…As for the solubility of the polymer backbone, DMSO is chosen as the best candidate, whereas TFT is compatible with the PS moieties and decreases the boiling point of the solvent mixture thereby favoring solvent removal subsequently. Also, TFT has been proved to be an efficient solvent in the preparation of Jeffamine‐based homopolymers . BCPs are synthesized in a three‐step reaction (Scheme ).…”

Section: Resultsmentioning

confidence: 99%

“…In this work, we report a new type of self‐standing and highly conductive SPEs based on tailor‐made block copolymers (i. e., Jeffamine®‐PS, Figure , hereafter abbreviated as BCP) where the structural block is made of amine terminated PS, while the conducting block is made of comb polymer containing polyether side moieties (so‐called Jeffamine®) doped with lithium bis(trifluoromethanesulfonylimide) (LiTFSI). The structure is conceived on the basis of the following considerations: 1) the conducting block, Jeffamine‐side chain polymer is a polyether based on propylene oxide (PO), ethylene oxide (EO) units ensuring low glass transition temperature and high amorphicity, presenting remarkable adhesion properties, high mobility of Li + ions and good compatibility with Li 0 electrode, as shown in our recent work;, 2) the PS block is favorable for providing mechanical stiffness in order to obtain self‐standing membranes acting as scaffolding, as well proved by previous work of Balsara and Bouchet;, 3) poly(ethylene‐alt‐maleimide) backbone is easy to modify in clean reactions; 4) LiTFSI is chosen due to its highly delocalized negative charge, structural flexibility (plasticizing), and chemical and electrochemical stabilities . A set of block copolymers with different composition have been prepared (Table ) and the structural, thermal and electrochemical properties are fully investigated.…”

Section: Introductionmentioning

confidence: 90%

“…Trying to overcome above‐mentioned drawbacks of PEO‐based SPEs, tremendous efforts have been devoted to the design of non‐crystalline and low T g polymer matrices, such as structural alteration by random, comb, and/or block copolymerization . Block copolymer‐based SPEs are a promising solution that combines both good mechanical properties and ionic conductivity .…”

Section: Introductionmentioning

confidence: 99%

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Self‐Standing Highly Conductive Solid Electrolytes Based on Block Copolymers for Rechargeable All‐Solid‐State Lithium‐Metal Batteries

Aldalur

Martínez‐Ibáñez

Piszcz

et al. 2018

Batteries & Supercaps

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Solid polymer electrolytes (SPEs) have been emerging as attractive candidates for meeting the demand in safe and high energy density batteries, attributed to their low flammability and ease in process. The architectural design of polymer matrices can improve the physicochemical and electrochemical properties of SPEs, thus leading to an enhanced performance of rechargeable all‐solid‐state lithium metal (Li0) batteries (ASSLMBs). However, for the majority of the reported SPEs, high ionic conductivities are achieved at the expense of their mechanical stiffness that is crucial for the processing of ASSLMBs. Herein, we report a new type of self‐standing and highly conductive SPE based on tailor‐made block copolymers, containing highly flexible Jeffamine‐based blocks and mechanically stable polystyrene moieties. The synthesis is facile and “one‐pot”. The electrolytes exhibit good mechanical properties and high ionic conductivities (5.6×10−4 S cm−1 at 70 °C and 7.9×10−5 S cm−1 at 40 °C). The superior compatibility with Li0 electrode allows the electrolyte to be cycled in a Li0||LiFePO4 cell with good coulombic efficiency and low capacity fading. The tailor‐made block copolymers offer a potential entry to safe and high‐performance ASSLMBs.

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Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Self‐Standing Highly Conductive Solid Electrolytes Based on Block Copolymers for Rechargeable All‐Solid‐State Lithium‐Metal Batteries

Aldalur

Martínez‐Ibáñez

Piszcz

et al. 2018

Batteries & Supercaps

Self Cite

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“…Both the structural modification of polymer matrix and the development of new lithium salts are highly desired for enhancing the ionic conductivity of PEs. Recently, a high ionic conductivity of 4.5 × 10 −5 S cm −1 at room temperature was achieved by a new type of comb polymer material based on polyether amines oligomer side chains (i.e., Jeffamine compounds), 99 which can thus be a good candidate for operating polymer-based ASSLSBs around room temperature. On the other hand, ceramic electrolytes hold the advantages in Li-ion conductivity and absence of solubility for polysulfide species, but their application is plagued by the poor processability.…”

Section: Future Needs and Prospectsmentioning

confidence: 99%

Review—Solid Electrolytes for Safe and High Energy Density Lithium-Sulfur Batteries: Promises and Challenges

Judez

Zhang

et al. 2017

J. Electrochem. Soc.

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All-solid-state lithium-sulfur batteries (ASSLSBs) offer a means to enhance the energy density and safety of the state-of-art lithiumion batteries (LIBs), due to their high gravimetric energy density, low cost and environmental benignancy. In this work, the status of the research advances and perspectives on several types of solid electrolytes (SEs) developed for ASSLSBs are reviewed. The promises and challenges of utilizing SEs are discussed taking into account both theoretical calculation and experimental results, in hope of shedding some lights on future design of high energy density, cost competitive, and safe Li-S batteries. Lithium-sulfur (Li-S) batteries have been extensively investigated for lightweight applications (e.g., aircraft, artificial satellite, and unmanned aerial vehicles), and large-scale stationary energy storage, owing to their high gravimetric energy density, low cost, and environmental friendliness.1-3 The deployment of Li-S batteries into commercial market is hampered by several seemingly intrinsic problems resulting from the complex cell chemistry. Firstly, the electronically insulating nature of elemental sulfur (S 8 ) and end-product lithium sulfide (Li 2 S) leads to unstable electrochemical contact within S cathode. [4][5][6][7] Secondly, the soluble intermediates of polysulfide (PS) can diffuse between the cathode and anode (i.e., shuttle effect of PS), generating an active material loss in S cathode and degrading metallic Li anode. [4][5][6][7][8][9] Thirdly, the formation of 'dead' Li and Li dendrites upon cycling could not only decrease the Coulombic efficiency but also raise safety issues. [10][11][12] In recent years, various strategies have been attempted to overcome the above-mentioned problems. Most of the efforts have been devoted to enhance the electrochemical performance of Li-S batteries using well-designed cathode materials. 13 The diffusion of polysulfide species generated during discharge into electrolytes can be significantly suppressed by infusing sulfur into carbon materials in the cathode with an adequately controlled and engineered porosity and pore size, thus increasing the practical capacity and cyclability of Li-S batteries. These rational and creative strategies of cathode design have been covered by a number of recent reviews. 7,14,15 Besides, new binders (e.g., poly(ethylene oxide) (PEO) 16 and carboxymethycellulose (CMC) 17,18 ) have been employed for guarantying the integrity of the morphology and structure of S cathode, and enhancing the adhesion to current collector. The modification of separators (e.g., multiwall carbon nanotubes coated polypropylene 19 and lithiated Nafion 20 ) have been also developed for reducing the migration of polysulfides, thus mitigating the shuttle effect of PS. 21Apart from the strategies mentioned above, another approach, focusing on electrolyte formulation and modification, has been proved to be effective. The performances of Li-S batteries are largely affected by the electrolyte recipes, such as the type and identity of so...

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Digital Printing of Solid‐State Lithium‐Ion Batteries

et al. 2019

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Solid-state lithium-ion batteries promise to deliver the next generation of energy storage with necessary improvements in safety, energy density, and durability. However, their broad commercial success requires the development of scalable manufacturing processes to address fabrication challenges associated with composite electrodes, electrode/solid electrolyte interfaces, and thin solid electrolyte layers. In parallel with the need for innovation in solid-state battery fabrication, there is a rapid progress in the field of 3D printing of functional materials. Hence, there is now the opportunity to consider how additive manufacturing informs fabrication processes for solid-state lithium-ion batteries. Herein, the fabrication requirements of solid-state lithium-ion batteries are described and recent examples of digitally fabricated solid-state lithium-ion batteries, components, and materials are highlighted. A critical review of initial efforts toward 3D printing of solid-state lithium-ion batteries provides the prospective to identify future challenges and prospects.

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Jeffamine® based polymers as highly conductive polymer electrolytes and cathode binder materials for battery application

Cited by 80 publications

References 32 publications

Self‐Standing Highly Conductive Solid Electrolytes Based on Block Copolymers for Rechargeable All‐Solid‐State Lithium‐Metal Batteries

Self‐Standing Highly Conductive Solid Electrolytes Based on Block Copolymers for Rechargeable All‐Solid‐State Lithium‐Metal Batteries

Review—Solid Electrolytes for Safe and High Energy Density Lithium-Sulfur Batteries: Promises and Challenges

Digital Printing of Solid‐State Lithium‐Ion Batteries

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