NMR and Conductivity Study of Polymer Electrolytes in the Imide Family: P(EO)/Li[N(SO2CnF2n+1)(SO2CmF2m+1)]

Gorecki, W.; Roux, Christel; Clémancey, Martin; Armand, Michel; Bélorizky, E.

doi:10.1002/1439-7641(20020715)3:7<620::aid-cphc620>3.0.co;2-u

Cited by 52 publications

(18 citation statements)

References 22 publications

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“…Attempts on improving the T Li + of TFSI-based SPEs were made by increasing the chain length of perfluoroalkyl group, that is, replacing -CF 3 with -C 2 F 5 , -C 4 F 9 . Gorecki et al 18 synthesized a series of lithium salts with sulfonimide anions, [N(SO 2 C n F 2n+1 )(SO 2 C m F 2m+1 )] -(n, m = 1, 2, 3, and 4), and observed that the corresponding SPEs obtained by blending these salts with PEO were characterized with very comparable T Li + values, for example, The ether-functionalized anion designed in Ref. [20] .…”

Section: Alternatives To Litfsimentioning

confidence: 99%

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Zhang

Chen

et al. 2021

SusMat

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The interest for solid-state lithium metal (Li •) batteries (SSLMBs) has been growing exponentially in recent years in view of their higher energy density and eliminated safety concerns. Solid polymer electrolytes (SPEs) are soft ionic conductors which can be easily processed into thin films at industrial level; these unique features confer solid-state Li • polymer batteries (SSLMPBs, i.e., SSLMBs utilizing SPEs as electrolytes) distinct advantages compared to SSLMBs containing other electrolytes. In this article, we briefly review recent progresses and achievements in SSLMPBs including the improvement of ionic conductivity of SPEs and their interfacial stability with Li • anode. Moreover, we outline several advanced in-situ and ex-situ characterizing techniques which could assist in-depth understanding of the anode-electrolyte interphases in SSLMPBs. This article is hoped not only to update the state-of-the-art in the research on SSLMPBs but also to bring intriguing insights that could improve the fundamental properties (e.g., transport, dendrite formation, and growth, etc.) and electrochemical performance of SSLMPBs. K E Y W O R D S anode-electrolyte interphase, solid polymer electrolytes, solid-state batteries, solid-state lithium metal polymer batteries This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Alternatives To Litfsimentioning

confidence: 99%

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Zhang

Chen

et al. 2021

SusMat

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“…The structural modification of anions has long been considered as an efficient and versatile tool for regulating the physicochemical and electrochemical properties of PEs. Yet, Gorecki et al . showed that the introduction of bulkier perfluorinated alkyl chains (up to C 4 F 9 ) in homologues of the widely used bis(trifluoromethanesulfonyl)imide anion ([N(SO 2 CF 3 )] 2 − , TFSI) did not result in any improvement in the selectivity of Li + transport (that is, comparable T Li + of ca.…”

Section: Figurementioning

confidence: 99%

Suppressed Mobility of Negative Charges in Polymer Electrolytes with an Ether‐Functionalized Anion

et al. 2019

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Suppressing the mobility of anionic species in polymer electrolytes (PEs) is essential for mitigating the concentration gradient and internal cell polarization, and thereby improving the stability and cycle life of rechargeable alkali metal batteries. Now, an ether‐functionalized anion (EFA) is used as a counter‐charge in a lithium salt. As the salt component in PEs, it achieves low anionic diffusivity but sufficient Li‐ion conductivity. The ethylene oxide unit in EFA endows nanosized self‐agglomeration of anions and trapping interactions between the anions and its structurally homologous matrix, poly(ethylene oxide), thus suppressing the mobility of negative charges. In contrast to previous strategies of using anion traps or tethering anions to a polymer/inorganic backbone, this work offers a facile and elegant methodology on accessing selective and efficient Li‐ion transport in PEs and related electrolyte materials (for example, composites and hybrid electrolytes).

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“…Owing to the very low lattice energy, LiTFSI had high solubility and was one of the most dissociated salts. [48][49][50][51] However, LiTFSI was not applied in conventional liquid-electrolyte-based LIBs due to the severe corrosive effect on aluminum collectors. In previous reports, 52 LiTFSI-based polymer electrolytes showed limited cycle performance and low coulombic efficiency in cell testing.…”

Section: Context and Scalementioning

confidence: 99%

A Superionic Conductive, Electrochemically Stable Dual-Salt Polymer Electrolyte

Chen

Liang

et al. 2018

Joule

162

113

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The ternary phase diagrams were used to guide the design of polymer electrolyte composites. The dual-salt LiTFSI/LiBOB polymer electrolyte with optimized ionic conductivity over 1.0 mS/cm at 30 C was achieved in the isotropic phase. The lithium metal cells with free-standing polymer electrolyte exhibited outstanding average coulombic efficiency of 99.99% in the first 370 cycles, with a capacity retention of 86%.

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NMR and Conductivity Study of Polymer Electrolytes in the Imide Family: P(EO)/Li[N(SO2CnF2n+1)(SO2CmF2m+1)]

Cited by 52 publications

References 22 publications

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Suppressed Mobility of Negative Charges in Polymer Electrolytes with an Ether‐Functionalized Anion

A Superionic Conductive, Electrochemically Stable Dual-Salt Polymer Electrolyte

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