Safe and flexible ion gel based composite electrolyte for lithium batteries

Que, Mingming; Tong, Yongfen; Wei, Guochang; Yuan, Kai; Wei, Junchao; Jiang, Yaoquan; Zhu, Hui; Chen, Yiwang

doi:10.1039/c6ta04914a

Cited by 52 publications

(25 citation statements)

References 51 publications

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“…Because the use of an organic liquid electrolyte poses an environmental contamination risk due to leakage, coupled with a flammability issue [76], the development of solid polymer electrolytes (SPEs) are promising alternatives to enhance the safety performance of batteries [77]. Composite electrolytes based on POE (poly(oxyethylene)) and similar matrices have been developed that can have gel-like (low molecular weight) or solid (high polymer molecular weight) properties for Li-ion cell applications.…”

Section: Polymer Electrolytesmentioning

confidence: 99%

Current Li-Ion Battery Technologies in Electric Vehicles and Opportunities for Advancements

et al. 2019

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Over the past several decades, the number of electric vehicles (EVs) has continued to increase. Projections estimate that worldwide, more than 125 million EVs will be on the road by 2030. At the heart of these advanced vehicles is the lithium-ion (Li-ion) battery which provides the required energy storage. This paper presents and compares key components of Li-ion batteries and describes associated battery management systems, as well as approaches to improve the overall battery efficiency, capacity, and lifespan. Material and thermal characteristics are identified as critical to battery performance. The positive and negative electrode materials, electrolytes and the physical implementation of Li-ion batteries are discussed. In addition, current research on novel high energy density batteries is presented, as well as opportunities to repurpose and recycle the batteries.

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Section: Polymer Electrolytesmentioning

confidence: 99%

Current Li-Ion Battery Technologies in Electric Vehicles and Opportunities for Advancements

et al. 2019

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“…The gel polymer electrolytes are composed of polymer matrix and liquid electrolyte, which show excellent ionic conductivity and mechanical flexibility . Lee and co‐workers studied shape‐conformable polymer electrolyte for versatile LIBs .…”

Section: Strategy For Future Practical Applicationmentioning

confidence: 99%

Issues and Challenges Facing Flexible Lithium‐Ion Batteries for Practical Application

Cha

Kim

Lee

et al. 2017

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With the advent of flexible electronics, lithium-ion batteries have become a key component of high performance energy storage systems. Thus, considerable effort is made to keep up with the development of flexible lithium-ion batteries. To date, many researchers have studied newly designed batteries with flexibility, however, there are several significant challenges that need to be overcome, such as degradation of electrodes under external load, poor battery performance, and complicated cell preparation procedures. In addition, an in-depth understanding of the current challenges for flexible batteries is rarely addressed in a systematical and practical way. Herein, recent progress and current issues of flexible lithium-ion batteries in terms of battery materials and cell designs are reviewed. A critical overview of important issues and challenges for the practical application of flexible lithium-ion batteries is also provided. Finally, the strategies are discussed to overcome current limitations of the practical use of flexible lithium-based batteries, providing a direction for future research.

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“…Ionic liquid electrolytes (ILEs) as a new type of quasi‐solid electrolytes (QSEs) show great potential applications in lithium batteries, solar cells, fuel cells, supercapacitors, and biosensors due to their wide electrochemical window, high ionic conductivity and low volatility . Usually, the ILE can be mainly divided into two categories, one of which is conventional polymer/ionic liquid (IL) composite electrolyte, the other is poly(ionic liquid) (PIL)/IL composite electrolyte . PILs are the most ideal matrix in the IL‐based electrolyte as they are well miscible with ILs having the similar structure units, which can inhibit the phase separation and leakage .…”

Section: Introductionmentioning

confidence: 99%

Poly(ionic liquid)‐Based Hybrid Hierarchical Free‐Standing Electrolytes with Enhanced Ion Transport and Fire Retardancy Towards Long‐Cycle‐Life and Safe Lithium Batteries

Huang

Long

et al. 2019

ChemElectroChem

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Ionic liquid electrolytes (ILEs), owing to their wide electrochemical window, high ionic conductivity, and low volatility, have been extensively applied in the field of energy storage devices. However, it is extremely significant and greatly challenging to seek the counterbalance of good mechanical properties and excellent electrochemical performances, including a high transference number of ILEs for safe flexible lithium batteries. In this work, a novel hybrid poly(ionic liquid)-based quasi-solid electrolyte containing silica nanoparticles (SiO 2 -PIL-QSE) is fabricated through the one-step in situ polymerization of the ionic liquid covalently tethered to silica nanoparticles (SiO 2 -IL-TFSI), which fills a poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) porous membrane prepared through phase inversion. The hybrid hierarchical porous architecture endows the SiO 2 -PIL-QSE with excellent thermal stability, good fire safety (i. e. nonflammable and low shrinkage), improved mechanical strength, and excellent electrochemical performance, including a high room-temperature ionic conductivity of 1.69 mS cm À 1 , a superior electrochemical window up to 5.5 V, as well as a high lithium-ion transference of 0.46. Accordingly, the LiFePO 4 j SiO 2 -PIL-QSE j Li cell can maintain a discharge specific capacity of 133.7 mAh g À 1 at 0.1 C at 25°C with a capacity retention ratio of 91.9 % after 400 cycles. The excellent performances and good applicability in the pouch-type battery of SiO 2 -PIL-QSE indicate a good prospect in the field of flexible solidstate polymer batteries (SSPB).[a] T.

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Safe and flexible ion gel based composite electrolyte for lithium batteries

Abstract: Safe and flexible electrolyte functioning well at wide temperature range and deformable conditions by incorporating ion gel in electrospun membranes.

Cited by 52 publications

References 51 publications

Current Li-Ion Battery Technologies in Electric Vehicles and Opportunities for Advancements

Current Li-Ion Battery Technologies in Electric Vehicles and Opportunities for Advancements

Issues and Challenges Facing Flexible Lithium‐Ion Batteries for Practical Application

Poly(ionic liquid)‐Based Hybrid Hierarchical Free‐Standing Electrolytes with Enhanced Ion Transport and Fire Retardancy Towards Long‐Cycle‐Life and Safe Lithium Batteries

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