All-climate outstanding-performances lithium-ion batteries enabled by in-situ constructed gel polymer electrolytes

Quan, Lijiao; Su, Qili; Wu, Haiyuan; Huang, Weiyi; Liu, Mingzhu; Lu, Yilong; Li, Zhe; Liu, Haijing; Xing, Lidan; Li, Weishan

doi:10.1016/j.cej.2022.140086

Cited by 15 publications

(9 citation statements)

References 66 publications

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“…The formation of a cross-linked polymer network by free-radical polymerization of SPDFA is schematically presented in Figure S3. The 3D cross-linked structure of GPE can effectively encapsulate carbonate solvents in the 3D polymer network, thereby suppressing the leakage of solvents . Additionally, the polymer network containing phosphonate and “F” atoms within its structure imparts flame retardancy to GPE.…”

Section: Resultsmentioning

confidence: 99%

“…The 3D cross-linked structure of GPE can effectively encapsulate carbonate solvents in the 3D polymer network, thereby suppressing the leakage of solvents. 39 Additionally, the polymer network containing shows optical images of the GPEs synthesized with different contents of SPDFA. When the SPDFA content was 10 wt % or higher, the obtained GPE exhibited a completely nonfluidic behavior without solvent exudation, indicating that 10 wt % is the minimum content to obtain the cross-linked GPE that encapsulates and immobilizes organic solvents within the polymer network.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Non-flammable Gel Polymer Electrolyte for Enhancing the Safety and High-Temperature Performance of Lithium-Ion Batteries

Lim,

Seok,

Hong

et al. 2024

ACS Appl. Mater. Interfaces

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As the applications of lithium-ion batteries (LIBs) have expanded, battery safety has emerged as a major concern because of the thermal runaway of LIBs arising from the use of flammable liquid electrolytes (LEs). Gel polymer electrolytes (GPEs) have been considered as potential candidates to replace LEs and improve the thermal safety of LIBs. In our study, a chemically cross-linked nonflammable GPE was synthesized and used in an LIB. A cross-linking agent, spirocyclic pentaerythritol diphosphate perfluorinated ether acrylate, comprising a phosphorus moiety and a fluoroether chain, was designed and synthesized to prepare a nonflammable crosslinked GPE. The obtained GPE effectively suppressed the deleterious reactions of the LE and imparted nonflammable characteristics. The pouch-type graphite/ LiNi 0.6 Co 0.2 Mn 0.2 O 2 cell with a nonflammable GPE delivered an initial discharge capacity of 146.7 mAh g −1 with a capacity retention of 71.1% after 300 cycles at 0.5 C and 55 °C. Moreover, the chemically cross-linked GPE exhibited excellent dimensional and thermal stability, which allowed for the safer operation of LIBs even under harsh conditions. This work provides guidelines for designing nonflammable electrolyte systems for advanced LIBs with high safety, enhanced thermal stability, and good cycling characteristics at elevated temperatures.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Non-flammable Gel Polymer Electrolyte for Enhancing the Safety and High-Temperature Performance of Lithium-Ion Batteries

Lim,

Seok,

Hong

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Section: Advanced Electrolytesmentioning

confidence: 99%

“…To solve the above problems, some researchers have developed gel polymer electrolytes that can reduce lithium dendrite formation to enhance battery fast-charging performance and safety performance. 119 Lee and Liu 120 used atom transfer radical polymerization to prepare a self-crosslinkable poly(vinylidene difluoride) (PVdF) graft copolymer as a polymer matrix for gel polymer electrolytes. They used a Meldrum's acid-containing styrenic compound (MASS) as the polymerization monomer to prepare PMASS grafted PVdF copolymer (PVdF-gPMASS).…”

Section: Gel Polymer Electrolytementioning

confidence: 99%

“…In addition, the separator is prone to deformation and shrinkage under abnormal temperature rise, leading to short circuits. To solve the above problems, some researchers have developed gel polymer electrolytes that can reduce lithium dendrite formation to enhance battery fast‐charging performance and safety performance 119 . Lee and Liu 120 used atom transfer radical polymerization to prepare a self‐crosslinkable poly(vinylidene difluoride) (PVdF) graft copolymer as a polymer matrix for gel polymer electrolytes.…”

Section: Advanced Electrolytesmentioning

confidence: 99%

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Fast‐charging of lithium‐ion batteries: A review of electrolyte design aspects

et al. 2023

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Lithium‐ion batteries (LIBs) with fast‐charging capabilities have the potential to overcome the “range anxiety” issue and drive wider adoption of electric vehicles. The U.S. Advanced Battery Consortium has set a goal of fast charging, which requires charging 80% of the battery's state of charge within 15 min. However, the polarization effects under fast‐charging conditions can lead to electrode structure degradation, electrolyte side reactions, lithium plating, and temperature rise, which are highly linked to the thermodynamic and kinetic properties of electrolytes. The conventional nonaqueous electrolytes used in LIBs consist of carbonate and cannot support fast‐charging without compromising performance and lifespan. This review outlines the challenges of fast‐charging LIBs and the requirements of electrolytes suitable for fast‐charging. Additionally, recent developments in fast‐charging electrolytes from four key perspectives: electrolyte additives, low‐viscosity co‐solvents, high concentration or localized high‐concentration electrolytes, and advanced electrolytes are summarized. Furthermore, this review provides insights for the design of fast‐charging electrolytes based on the mechanism of charging process and offers an overview of the current state and future direction of the field.

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Effect of Fluorine Segments in Fluoropolymer Matrix on the Properties of Gel Polymer Electrolytes

Chen,

Hai,

Gao

et al. 2024

ChemNanoMat

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Polymer quasi‐solid electrolytes have been paid widely attention in account of their outstanding advantages in safety, flexibility, viscoelasticity and film formation. Fluoropolymer is used as matrix of gel electrolytes not only has high electrochemical stability, but also facilitates the dissociation of lithium salts owning to the strong electron‐absorbing C‐F groups, which makes it a very promising choice for the further development of gel electrolytes. Due to the different sites of C‐F bonds, their activity is also diverse, which results in the difference of the mobility of lithium ions and the LiF composition of SEI film on the surface of lithium metal anode. As a result, distinct fluorine‐containing gel polymer electrolytes are prepared by in‐situ polymerization of two different monomers, HFMA and TFMA. Compared with ‐CF3 on terminal group in TFMA, the gel electrolyte polymerized with HFMA whose C‐F group with stronger electronegativity is at the intermediate carbon site, as polymer matrix has better performance. The ionic conductivity achieves 7.02×10−3 S cm−1 at room temperature, and the assembled batteries have a capacity retention rate of 91% after 200 cycles of 1 C. Our research has laid a solid theoretical foundation for the further development of quasi‐solid electrolyte.

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All-climate outstanding-performances lithium-ion batteries enabled by in-situ constructed gel polymer electrolytes

Cited by 15 publications

References 66 publications

Non-flammable Gel Polymer Electrolyte for Enhancing the Safety and High-Temperature Performance of Lithium-Ion Batteries

Non-flammable Gel Polymer Electrolyte for Enhancing the Safety and High-Temperature Performance of Lithium-Ion Batteries

Fast‐charging of lithium‐ion batteries: A review of electrolyte design aspects

Effect of Fluorine Segments in Fluoropolymer Matrix on the Properties of Gel Polymer Electrolytes

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