Six-armed and dicationic polymeric ionic liquid for highly stretchable, nonflammable and notch-insensitive intrinsic self-healing solid-state polymer electrolyte for flexible and safe lithium batteries

Li, Ruijing; Fang, Zhao; Wang, Cheng; Zhu, Xinlin; Fu, Xiaolong; Fu, Jiajun; Yan, Wuwei; Yang, Yong

doi:10.1016/j.cej.2021.132706

Cited by 25 publications

(21 citation statements)

References 53 publications

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“…[117] Non-linear PILs can also be synthesised, such six-arm mono-(MPIL) or dicationic (DPIL) polymers. [50] Notably, a GPE formed from DPIL, LiTFSI and EMIM-TFSI exhibited high tensile stress (> 490 kPa), room temperature ionic conductivity (5.5 × 10 À 5 S/cm) and could selfheal within 2 h at room temperature. A LiFeO 4 j Li battery with this electrolyte achieved a stable capacity of 153 mAh/g at 0.1 C over 50 cycles with 96% CE.…”

Section: Self-healing Structural Electrolytesmentioning

confidence: 99%

Concepts and Emerging Trends for Structural Battery Electrolytes

Tan

Safanama

Goh

et al. 2022

Chemistry An Asian Journal

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The structural battery is a multifunctional energy storage device that aims to address the weight and volume efficiency issues that conventional batteries face, especially in electric transportation. By combining the functions of mechanical load bearing and energy storage, structural batteries can reduce the reliance on, or even eventually replace the main power source in an electric vehicle or a drone. However, one of the key challenges to be addressed before achieving multifunctionality in structural batteries would be the design of a suitable multifunctional structural battery electrolyte. The structural battery electrolyte is the constituent that provides mechanical integrity under flexural loads or impact and hence determines the electrochemical and much of the mechanical performance of a structural battery device. This concept paper aims to cover the key considerations and challenges facing the design of structural battery electrolytes. In addition, the main approaches to surmount these challenges are highlighted, keeping design aspects like sustainability and recyclability in view.[a] M.

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Section: Self-healing Structural Electrolytesmentioning

confidence: 99%

Concepts and Emerging Trends for Structural Battery Electrolytes

Tan

Safanama

Goh

et al. 2022

Chemistry An Asian Journal

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“…Significant work is devoted to the improvement of the interfacial compatibility with the electrodes to enhance the SPE functional performance . Other important features such as flame retardance ability, lithium dendrite inhibition, shutdown function, and self-healing are being tested and implemented for the next generation of advanced SPEs, as represented in Figure . Flame retardancy increases the safety of the battery by reducing the risk of fires, usually by limiting the amount of oxygen available for combustion .…”

Section: Lithium-ion Batteries: Performance and Sustainabilitymentioning

confidence: 99%

“…The most used passive fillers are ceramic [barium titanate (BaTiO 3 ), 17 aluminum oxide (Al 2 O 3 ), 18 silicon dioxide (SiO 2 ), 19 and titanium dioxide (TiO 2 ) 20 ] or carbonaceous (graphite 100 ), with the function of improving properties such as mechanical or thermal stability. The most common active fillers are ionic liquids [1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, (EMIM)(TFSI); 22 1-butyl-3-methylimidazolium chloride, (BMIM)(Cl) 101 ] and various lithium salts [lithium tetrafluoroborate (LiBF 4 ), 24 lithium hexafluorophosphate (LiPF 6 ), 25 lithium hexafluoroarsenate (LiAsF 6 ), 26 lithium perchlorate (LiClO 4 ), 27 and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) 28 ], among others, with the function of increasing SPE ionic conductivity, both in terms of intrinsic value and thermal characteristics. With respect to the materials selection for SPE development, it is also important to note that the ionic conductivity of SPEs is strongly affected by ion–dipole interactions between ion and polymer matrix, as they support lithium salt dissociation, increasing lithium ion transfer number and mobility.…”

Section: Introductionmentioning

confidence: 99%

Toward Sustainable Solid Polymer Electrolytes for Lithium-Ion Batteries

2022

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Lithium-ion batteries (LIBs) are the most widely used energy storage system because of their high energy density and power, robustness, and reversibility, but they typically include an electrolyte solution composed of flammable organic solvents, leading to safety risks and reliability concerns for high-energy-density batteries. A step forward in Li-ion technology is the development of solid-state batteries suitable in terms of energy density and safety for the next generation of smart, safe, and high-performance batteries. Solid-state batteries can be developed on the basis of a solid polymer electrolyte (SPE) that may rely on natural polymers in order to replace synthetic ones, thereby taking into account environmental concerns. This work provides a perspective on current state-of-the-art sustainable SPEs for lithium-ion batteries. The recent developments are presented with a focus on natural polymers and their relevant properties in the context of battery applications. In addition, the ionic conductivity values and battery performance of natural polymer-based SPEs are reported, and it is shown that sustainable SPEs can become essential components of a next generation of high-performance solid-state batteries synergistically focused on performance, sustainability, and circular economy considerations.

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“…The polymer film has excellent stretchability, and the LiFePO 4 /DPIL-6-SPE/Li cell can exhibit a satisfactory capacity of 152.6 mAh g −1 at 0.1 C. Moreover, the outstanding inherent self-repairing capacity (self-repairing time <2 h) at 25 °C endows the DPIL-6-SPE with the ability to resist damage, improving the safety and reliability of the battery. 28 However, there is rarely a report on self-healing solid polymeric ionic liquid electrolytes. The development of a battery cannot blindly pursue high capacity, and the excellent safety and reliability also need to be paid great attention.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Subsequently, a six-armed branched polymeric ionic liquid containing a multiple charged center was successfully prepared. The polymer film has excellent stretchability, and the LiFePO 4 /DPIL-6-SPE/Li cell can exhibit a satisfactory capacity of 152.6 mAh g –1 at 0.1 C. Moreover, the outstanding inherent self-repairing capacity (self-repairing time <2 h) at 25 °C endows the DPIL-6-SPE with the ability to resist damage, improving the safety and reliability of the battery . However, there is rarely a report on self-healing solid polymeric ionic liquid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Poly(ionic liquid)@PEGMA Block Polymer Initiated Microphase Separation Architecture in Poly(ethylene oxide)-Based Solid-State Polymer Electrolyte for Flexible and Self-Healing Lithium Batteries

Yang

2022

ACS Sustainable Chem. Eng.

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PEO-based solid electrolytes are eagerly anticipated for being explored in batteries with remarkable performance. Their narrower electrochemical window and weak mechanical strength, however, limit the potential for wide application in safe and highcapacity electronic devices. Herein, a self-healing solid-state electrolyte (PEO@BPIL) is fabricated by the incorporation of an imidazoliumbased polymerized ionic liquid (poly(ethylene glycol) monomethacrylate (PEGMA)) block polymer into PEO, and the influence of copolymer configuration on electrochemical performances of the system is investigated in-depth. In addition to reducing the crystallinity of PEO, an inimitable orderly and orderless microphase separation structure is introduced in PEO@BPIL, which brings about a "green fast track" for Li-ion migration. This contributes to a lithium-ion transference number of 0.63 that is an unsurpassed level. The electrochemical stability window of the optimized PEO@BPIL can achieve 5.0 V (vs Li + / Li). As a result, the capacity and endurance discharge performances for PEO@BPIL based cells are significantly improved. Moreover, the bountiful charged ions on the scaffold endue the electrolyte with generous interactions, conferring the PEO@BPIL predominant adhesiveness toward lithium metal (the hanging weight = 200 g) and standout self-healing ability (recovering time <30 min, 60 °C). The restriction toward lithium dendrite is thus enhanced. The PEO@BPIL-based laminate polymer battery presents ascendant antifolding deformation ability and still exhibits good electrochemical performances after reiterative damage. In combination with the high flame retardancy of polymerized ionic liquid, this work affords a splendid idea for an emerging power supply battery.

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Six-armed and dicationic polymeric ionic liquid for highly stretchable, nonflammable and notch-insensitive intrinsic self-healing solid-state polymer electrolyte for flexible and safe lithium batteries

Cited by 25 publications

References 53 publications

Concepts and Emerging Trends for Structural Battery Electrolytes

Concepts and Emerging Trends for Structural Battery Electrolytes

Toward Sustainable Solid Polymer Electrolytes for Lithium-Ion Batteries

Poly(ionic liquid)@PEGMA Block Polymer Initiated Microphase Separation Architecture in Poly(ethylene oxide)-Based Solid-State Polymer Electrolyte for Flexible and Self-Healing Lithium Batteries

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