Flexible, nonflammable, highly conductive and high-safety double cross-linked poly(ionic liquid) as quasi-solid electrolyte for high performance lithium-ion batteries

Liang, Ling; Yuan, Wenfang; Chen, Xianhong; Liao, Haiyang

doi:10.1016/j.cej.2021.130000

Cited by 62 publications

(34 citation statements)

References 66 publications

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“…In order to resolve this problem, numerous works has been done by introducing additives or blending with traditional electrolytes. [150][151][152] ILs blending with traditional electrolytes can not only ensure the high ionic conductivity and stable electrochemical window of ILs but also possess the merits of traditional electrolytes, such as low viscosity and excellent interface wettability. For example, Zn/polyaniline rechargeable batteries with the conventional alkaline electrolytes addition the ILs, 1-ethyl-3-methylimidazolium ethyl sulfate, used to prevent the formation of Zn dendrites.…”

Section: Ils Blend With Conventional Electrolytementioning

confidence: 99%

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

et al. 2021

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Designing high performance electrolyte is an efficient strategy to circumvent these problems. As one of the most important components, electrolytes provide the basic operating environment to guarantee the transmission of the Zn 2+ between the two electrodes during the charge-discharge processes, affect the Zn 2+ /Zn plating/ stripping on the anode and deciding the electrochemically stable potential windows. [12] Since the utilization of alkaline electrolytes in batteries in earlier studies, Zn|KOH|MnO 2 batteries became a hot topic. [13] However, the using of an alkaline electrolyte always leads to the growth of Zn dendrites and the corrosion of the anode, resulting in rapid capacity fading. [14][15][16] Until 1986, the replacement of corrosive alkaline electrolyte systems by neutral aqueous electrolytes greatly improved the performance and safety of ZIBs. [17] Although the aqueous electrolytes alleviated the corrosion of the Zn electrode in some extent, the problems related to the growth of dendrites and the dissolution of the cathode, especially the limited electrochemical stability window (≈1.23 V) still are the challenge in the application of ZIBs. [18][19][20] The aqueous electrolytes of ZIBs often suffer from the water splitting process, including hydrogen evolution reaction and oxygen evolution reaction. [21][22][23] Therefore, in order to overcome the problems mentioned above, "beyond aqueous" electrolytes for ZIBs have attracted extensive attention in recent years. [24][25][26] At present, the "beyond aqueous" electrolytes for ZIBs have been reported mainly include liquid organic electrolytes and solid electrolytes. Zn anode in the organic electrolytes have high thermodynamic stability, avoiding the appearance of passivation products inevitably generated in traditional aqueous solution, i.e., ZnO and Zn(OH) 4 −2. [27] Solid-state electrolytes have sufficient mechanical strength to inhibit the growth of dendrites. [28] Moreover, the "beyond aqueous" electrolytes without water fundamentally avoid the decomposition of water and the formation of side products related to water. Compared with aqueous electrolytes, the "beyond aqueous" electrolytes exhibit a wide electrochemical stability window (Figure 1) and excellent thermodynamic stability of Zn anode leading to Zn plating/ stripping high reversibility with higher Coulombic efficiencies (CEs). [29] Although significant advances have been made in improving the electrochemical performance of the "beyond aqueous" electrolytes for ZIBs, several severe issues still exist, which largely prevent the development of "beyond aqueous" ZIBs. [30][31][32][33][34][35] The main issues of "beyond aqueous" electrolytes With the growing demands for large-scale energy storage, Zn-ion batteries (ZIBs) with distinct advantages, including resource abundance, low-cost, high-safety, and acceptable energy density, are considered as potential substitutes for Li-ion batteries. Although numerous efforts are devoted to design and develop high performance cathodes and aqueous electrolyt...

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Section: Ils Blend With Conventional Electrolytementioning

confidence: 99%

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

et al. 2021

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“…Relevant approaches based on epoxy systems were reported, where high ionic conductivity of around 10 −5 to 10 −3 S·cm −1 was successfully achieved [ 105 , 106 , 107 , 108 ]. Liang et al [ 89 ] recently developed a GPE epoxy resin based on PEI and non-flammable ionic liquid monomer that also contained vinyl groups for dual crosslinking. The strategy of synthesizing a new type of bifunctional ionic liquid ( Figure 11 a) provides superior safety regarding the non-flammability of ionic liquids, without compromising ionic conductivity of the final system, as they replace the need for flammable plasticizers.…”

Section: Design Of Solid- and Gel-polymer Electrolytesmentioning

confidence: 99%

“… ( a ) Synthetic strategy to prepare the crosslinked PIL-PEI; ( b ) photograph of the developed membrane while being folded; ( c ) membrane flame test: PIL-PEI (left) and commercial Celgard (right). Reprinted with permission from Liang et al [ 89 ] Copyright 2021 Elsevier. …”

Section: Figurementioning

confidence: 99%

Designing Versatile Polymers for Lithium-Ion Battery Applications: A Review

et al. 2022

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Solid-state electrolytes are a promising family of materials for the next generation of high-energy rechargeable lithium batteries. Polymer electrolytes (PEs) have been widely investigated due to their main advantages, which include easy processability, high safety, good mechanical flexibility, and low weight. This review presents recent scientific advances in the design of versatile polymer-based electrolytes and composite electrolytes, underlining the current limitations and remaining challenges while highlighting their technical accomplishments. The recent advances in PEs as a promising application in structural batteries are also emphasized.

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“…[4] And in particular, in LIBs with liquid electrolytes the unstopping growth of Li dendrite during the charge/discharge process will tend to impale the separator and trigger the short circuit, resulting in a serious safety problem. [5] Therefore, it is necessary to develop flexible, nonflammable, highly conductive and high-safety electrolytes to replace traditional organic electrolytes for flexible LIBs. [6] Gel polymer electrolytes (GPEs) were developed to overcome the weakness of traditional liquid electrolytes due to their good mechanical flexibility, ionic conductivity, and processability.…”

Section: Introductionmentioning

confidence: 99%

Double‐Network Ionogel Electrolyte with Superior Mechanical Performance and High Safety for Flexible Lithium‐Ion Batteries

Chu

et al. 2022

ChemElectroChem

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The development of high‐performance solid‐state electrolytes to replace conventional liquid organic electrolytes has received intensive attention because of the improvements in the safety, flexibility, reliability, and cycling stability of lithium‐ion batteries (LIBs). In this work, we present a double‐network ionogel electrolyte (DNIE) through the preparation of interpenetrating polymer networks (IPNs). This DNIE exhibits good mechanical properties, excellent flexibility, nonflammability, high ionic conductivity (4.13×10−4 S cm−1 at room temperature), electrochemical stability (>4.8 V), and the ability to suppress Li dendrite formation. The Li/LiFePO4 cell assembled with the DNIE exhibits superior cycling performance while also delivering a steady high discharge capacity of 133.7 mAh g−1 and a Coulombic efficiency of 99.8 % after 220 cycles at a charge/discharge rate of 0.2 C. Importantly, the DNIE(200 %)‐20 % electrolytes can be prepared on the surface of graphite anodes through in situ gelling, which can improve the stability of the active layer and the adhesion between the active layer and current collector in mechanical bending at different angles. After assembling into soft‐packed batteries in the configuration of LiCoO2|DNIE(200 %)‐20 %|graphite via the in situ gelling of DNIE(200 %)‐20 % on the surface of the graphite electrode, the flexible batteries showed excellent cycling stability (capacity retention >98 %) even when folded more than 100 times.

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Flexible, nonflammable, highly conductive and high-safety double cross-linked poly(ionic liquid) as quasi-solid electrolyte for high performance lithium-ion batteries

Cited by 62 publications

References 66 publications

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

Recent Advances in Electrolytes for “Beyond Aqueous” Zinc‐Ion Batteries

Designing Versatile Polymers for Lithium-Ion Battery Applications: A Review

Double‐Network Ionogel Electrolyte with Superior Mechanical Performance and High Safety for Flexible Lithium‐Ion Batteries

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