Toward high lithium conduction in solid polymer and polymer–ceramic batteries

Commarieu, Basile; Paolella, Andrea; Daigle, Jean‐Christophe; Zaghib, Karim

doi:10.1016/j.coelec.2018.03.033

Cited by 66 publications

(43 citation statements)

References 49 publications

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“…[ 40 ] Here we chose to mix LAGP nanoparticles with 0.1LiFSI/0.9BMIM‐FSI to form a gel‐like hybrid paste ( Figure a), with considerable retention of the liquid component under external pressure, following previous reports that have demonstrated that the addition of LAGP particles in hybrid electrolytes is beneficial for enhancing Li‐ion migration. [ 41 ] The LAGP nanoparticles, with an average radius of 100 nm, are obtained by multiple ball‐milling (Figure S9, Supporting Information) and are also mixed with 0.1LiFSI/0.9BMIM‐FSI by ball milling to prepare a series of hybrid pastes with different IL/nanoparticle ratios. When the mass fraction of LAGP nanoparticles is above 50% the paste does not flow for more than 24 h in a sample tube inversion test, thus showing a strong gelation.…”

Section: Resultsmentioning

confidence: 99%

Design of a Multifunctional Interlayer for NASCION‐Based Solid‐State Li Metal Batteries

Xiong

Liu

Jankowski

et al. 2020

Adv Funct Materials

125

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NASCION-type Li conductors have great potential to bring high capacity solid-state batteries to realization, related to its properties such as high ionic conductivity, stability under ambient conditions, wide electrochemical stability window, and inexpensive production. However, their chemical and thermal instability toward metallic lithium (Li) has severely hindered attempts to utilize Li as anode material in NASCION-based battery systems. In this work, it is shown how a tailored multifunctional interlayer between the solid electrolyte and Li anode can successfully address the interfacial issues. This interlayer is designed by creating a quasi-solid-state paste in which the functionalities of LAGP (Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 ) nanoparticles and an ionic liquid (IL) electrolyte are combined. In a solid-sate cell, the LAGP-IL interlayer separates the Li metal from bulk LAGP and creates a chemically stable interface with low resistance (≈5 Ω cm 2 ) and efficiently prevents thermal runaway at elevated temperatures (300 °C). Solid-state cells designed with the interlayer can be operated at high current densities, 1 mA cm −2 , and enable high rate capability with high safety. Here developed strategy provides a generic path to design interlayers for solid-state Li metal batteries.

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Section: Resultsmentioning

confidence: 99%

Design of a Multifunctional Interlayer for NASCION‐Based Solid‐State Li Metal Batteries

Xiong

Liu

Jankowski

et al. 2020

Adv Funct Materials

125

View full text Add to dashboard Cite

show abstract

“…For example, ceramic electrolytes have high ionic conductivity and modulus, but are brittle and show poor adhesion with the Li interface upon cycling. [ 11 ] On the other hand, solid polymer electrolytes (SPEs) are mechanically strong and more adhesive, but suffer from low ionic conductivity, especially at room temperature. [ 12,13 ] Recent approaches in this area have explored self‐assembled microstructured block copolymers and layered polymeric and ceramic materials, both aimed at achieving a balance between the necessary properties.…”

Section: Introductionmentioning

confidence: 99%

Dendrite Suppression by a Polymer Coating: A Coarse‐Grained Molecular Study

Kong

Rudnicki

Choudhury

et al. 2020

Adv Funct Materials

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A major hurdle to the successful deployment of high‐energy‐density lithium metal based batteries is dendrite growth during battery cycling, which raises safety and cycle life concerns. Coating the Li metal anode with a soft polymer layer has been previously shown to be effective in suppressing dendrite growth, leading to uniform lithium deposition even at high current densities. A 3D coarse‐grained molecular model to study the mechanism of dendrite suppression is presented. It is found that the most effective coatings delay or even prevent dendrites from penetrating the polymer layer during deposition. The optimal deposition can be achieved by jointly tuning the polymer stiffness and relaxation time. Higher polymer dielectric permittivity and coating thickness are also effective, but the deposition rate and, therefore, the charging current density is reduced. These findings provide the basis for rational design of soft polymer coatings for stable lithium deposition.

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“…Lithium metal can easily form dendrites that cause short circuit in liquid electrolyte ,. Solid electrolytes can serve as a physical barrier, and several options were considered: a polymer like polyethylene oxide (PEO) : LiTFSI blend, ceramics such as garnet and Nasicon, and hybrid ceramic polymer electrolyte . Garnet lithium lanthanum zirconate Li 7 La 3 Zr 2 O 12 (LLZO) is a promising candidate as solid electrolyte due to its high structural stability at high voltage (up to 5 V) and good ionic conductivity (around 0.5 mS cm −1 ).…”

Section: Methodsmentioning

confidence: 99%

Facile Protection of Lithium Metal for All‐Solid‐State Batteries

et al. 2019

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A nanolayer of reactive propyl acrylate silane groups was deposited on a lithium surface by using a simple dipping method. The polymerization of cross‐linkable silane groups with a layer of ally‐ether‐ramified polyethylene oxide was induced by UV light. SEM analysis revealed a good dispersion of silane groups grafted on the lithium surface and a layer of polymer of about 4 μm was obtained after casting and reticulation. The electrochemical performance for the unmodified and modified lithium electrodes were compared in symmetrical Li/LLZO/Li cells. Stable plating/stripping and low interfacial resistance were obtained when the modified lithium was utilized, indicating that the combination of silane and polymer deposition is promising to increase Li‐metal/garnet contact.

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Toward high lithium conduction in solid polymer and polymer–ceramic batteries

Cited by 66 publications

References 49 publications

Design of a Multifunctional Interlayer for NASCION‐Based Solid‐State Li Metal Batteries

Design of a Multifunctional Interlayer for NASCION‐Based Solid‐State Li Metal Batteries

Dendrite Suppression by a Polymer Coating: A Coarse‐Grained Molecular Study

Facile Protection of Lithium Metal for All‐Solid‐State Batteries

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