Trifluoromethyl-free anion for highly stable lithium metal polymer batteries

Qiao, Lixin; Oteo, Uxue; Zhang, Yan; Peña, Sergio Rodríguez; Martínez‐Ibáñez, Maria; Santiago, Alexander; Cid, Rosalía; Meabe, Leire; Manzano, Hegoi; Carrasco, Javier; Zhang, Heng; Armand, Michel

doi:10.1016/j.ensm.2020.07.022

Cited by 47 publications

(63 citation statements)

References 47 publications

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“…Obvious voltage plateaus at ∼3.4 V are observed at 0.1–2 C, which agree with those of the LFP cathode. The specific discharge capacities obtained at 0.1, 0.2, 0.5, 1, and 2 C are 156, 153, 147, 139, and 128 mAh g –1 , respectively, which are competitive with previous Li-LFP cells based on polymer solid electrolyte tested at 60 °C. ,,− In addition, the rate behavior of the Li|LATP-GF/PEO-LiTFSI|LFP cell is presented in Figure b. Capacity degradation with the increase of the current density was observed due to the restriction of Li ion diffusion.…”

Section: Resultsmentioning

confidence: 71%

High-Strength Poly(ethylene oxide) Composite Electrolyte Reinforced with Glass Fiber and Ceramic Electrolyte Simultaneously for Structural Energy Storage

Dong

Mao

Yang

et al. 2021

ACS Appl. Energy Mater.

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The development of structural energy-storage materials is critical for the lightweighting and space utilization of electric vehicles and aircrafts. However, a structural electrolyte suitable for structural energy devices is rarely exploited. Here, a structural lithium battery composed of a fiber-reinforced structural electrolyte and a structural cathode is demonstrated. Benefitting from poly(ethylene oxide)–lithium bis(trifluoromethane)sulfonimide (PEO-LiTFSI) as the polymer electrolyte matrix and lithium aluminum titanium phosphate (LATP) and glass fiber (GF) as reinforcement fillers, the LATP-GF/PEO-LiTFSI composite electrolyte developed offers a high tensile strength of 33.1 MPa, large Li+ transfer number of 0.37, moderate ionic conductivity of 6.3 × 10–5 S cm–1 (at 25 °C), wide electrochemical window of 4.4 V, and high effectiveness in suppression of lithium dendrite growth. Finally, a structural lithium battery is demonstrated with acidified carbon fibers (ACFs) as the cathode, Li as the anode, and LATP-GF/PEO-LiTFSI as the electrolyte, which shows an ultrahigh tensile strength of 124.2 MPa and a moderate capacity of 1.45 mAh cm–2. Importantly, the ACF|LATP-GF/PEO-LiTFSI|Li cell can properly function under a high compressive stress of 11.26 MPa. It is believed that the design strategy with a fiber-reinforced polymer as the structural electrolyte and a carbon fiber woven fabric as the structural electrode is feasible to obtain high-performance structural energy-storage components.

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Section: Resultsmentioning

confidence: 71%

High-Strength Poly(ethylene oxide) Composite Electrolyte Reinforced with Glass Fiber and Ceramic Electrolyte Simultaneously for Structural Energy Storage

Dong

Mao

Yang

et al. 2021

ACS Appl. Energy Mater.

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“…LiTFSI was firstly employed as a conducting salt in ASSPEs by Armand et al [29,30] in 1986 and has since become the most widely used lithium salt in recent decades because of its excellent chemical stability and anionic flexibility generated from the delocalized negative charge over flexible S-N-S bonds. However, LiTFSI/PEO-based ASSPEs provide inferior SEI formation in contact with the Li° anode due to the unfavorable anion chemistry.…”

Section: All-solid-state Polymer Electrolytesmentioning

confidence: 99%

Perspective of polymer-based solid-state Li-S batteries

Castillo¹,

Qiao²,

Santiago³

et al. 2022

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Li-S batteries, as the most promising post Li-ion technology, have been intensively investigated for more than a decade. Although most previous studies have focused on liquid systems, solid electrolytes, particularly all-solidstate polymer electrolytes (ASSPEs) and quasi-solid-state polymer electrolyte (QSSPEs), are appealing for Li-S cells due to their excellent flexibility and mechanical stability. Such Li-S batteries not only provide significantly improved safety but are also expected to augment the all-inclusive energy density compared to liquid systems. Therefore, this perspective briefly summarizes the recent progress on polymer-based solid-state Li-S batteries, with a special focus on electrolytes, including ASSPEs and QSSPEs. Furthermore, future work is proposed based on the existing development and current challenges.

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“…between salt anions and polymer backbones, thereby slowing the motion of anionic species. 20,21,28 The ether-functionalized anion, 20 with a frog-like shape, was found to be self-agglomerated or entangled with PEO via dipole-dipole interactions ( Figure 1E). In addition to markedly reduced anionic conductivities, the 21 These inspiring results suggest that connecting the structural design of new anions to the nature of the selected polymer matrices would be of prime importance for attaining highly cation conductive SPEs.…”

Section: Alternatives To Litfsimentioning

confidence: 99%

“…Recently, we introduced several new types of sulfonimide anions functionalized with specific groups for forming secondary bonds (e.g., hydrogen bond, van der Waals interactions, etc.) between salt anions and polymer backbones, thereby slowing the motion of anionic species 20,21,28 . The ether‐functionalized anion, 20 with a frog‐like shape, was found to be self‐agglomerated or entangled with PEO via dipole–dipole interactions (Figure 1E).…”

Section: Improvement Of Li‐ion Conductivitymentioning

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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Trifluoromethyl-free anion for highly stable lithium metal polymer batteries

Cited by 47 publications

References 47 publications

High-Strength Poly(ethylene oxide) Composite Electrolyte Reinforced with Glass Fiber and Ceramic Electrolyte Simultaneously for Structural Energy Storage

High-Strength Poly(ethylene oxide) Composite Electrolyte Reinforced with Glass Fiber and Ceramic Electrolyte Simultaneously for Structural Energy Storage

Perspective of polymer-based solid-state Li-S batteries

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

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