High-performance PVDF-HFP based gel polymer electrolyte with a safe solvent in Li metal polymer battery

Jing, Jie; Liu, Yulong; Cong, Lina; Zhang, Bohao; Lü, Wei; Zhang, Xinming; Li, Jun; Xie, Haiming; Sun, Liqun

doi:10.1016/j.jechem.2020.01.019

Cited by 164 publications

(84 citation statements)

References 66 publications

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“…The adjustable ingredients of GPE composition and its soft nature also afford fresh concepts to address current bottlenecks of lithium metal anodes. 224 The PVDF-HFP film can be further functionalized by SEI-forming additives. For instance, an effective artificial protective layer is proposed by adding LiF into PVDF-HFP to achieve attributes of high mechanical modulus, high ionic conductivity, superb shape compliance, and good compatibility with Li metal anodes, enabling uniform Li deposition ( Figure 11D) in the corrosive carbonate electrolytes.…”

Section: Flexible Electrolytesmentioning

confidence: 99%

Advanced energy materials for flexible batteries in energy storage: A review

et al. 2020

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Smart energy storage has revolutionized portable electronics and electrical vehicles. The current smart energy storage devices have penetrated into flexible electronic markets at an unprecedented rate. Flexible batteries are key power sources to enable vast flexible devices, which put forward additional requirements, such as bendable, twistable, stretchable, and ultrathin, to adapt mechanical deformation under the working conditions. This review summarizes the recent advances in construction and configuration of flexible batteries and discusses the general metrics to benchmark various flexible batteries with different materials and chemistries. Moreover, we present advanced prototype flexible batteries developed by some companies to afford general envision of the technological status. Lastly, the critical points are summarized in the development of flexible batteries and remaining challenges are also presented for the future design of flexible batteries in practical perspectives. K E Y W O R D S composite electrode, flexible batteries, smart energy storage, ultrathin batteries, wearable electronics 1 | INTRODUCTION Rechargeable batteries have popularized in smart electrical energy storage in view of energy density, power density, cyclability, and technical maturity. 1-5 A great success has been witnessed in the application of lithium-ion (Li-ion) batteries in electrified transportation and portable electronics, and non-lithium battery chemistries emerge as alternatives in special applications from cost and safety views. 6-10 While energy/power

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Section: Flexible Electrolytesmentioning

confidence: 99%

Advanced energy materials for flexible batteries in energy storage: A review

et al. 2020

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“…As reported by Tang et al [ 34 ], the electrolyte membrane (90PVdF-HFP:10Mg(Tf) 2 + 40EMITf) fabricated by solution casting possesses the following mechanical properties: Young’s modulus = ~66 MPa, tensile strength = ~3.4 MPa, and breaking strain = ~633%. A study by Jie et al [ 54 ] indicates that the tensile strength and breaking strain are about 2.2 MPa and 250%, respectively, for the PVDF-HFP/LiTFSI/NMP gel electrolyte film. Obviously, our values are highly comparable to theirs.…”

Section: Resultsmentioning

confidence: 99%

Ionic Liquid-Incorporated Zn-Ion Conducting Polymer Electrolyte Membranes

et al. 2020

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In this study, novel ionic liquid-incorporated Zn-ion conducting polymer electrolyte membranes containing polymer matrix poly (vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMITf), along with zinc trifluoromethanesulfonate Zn(Tf)2, are prepared and investigated. It is ascertained that the optimal membrane ILPE-Zn-4 (the mass ratio of EMITf:Zn(Tf)2:PVDF-HFP is 0.4:0.4:1), with abundant nanopores, exhibits a high amorphousness. At room temperature, the optimized electrolyte membrane offers a good value of ionic conductivity (~1.44 × 10−4 S cm−1), with a wide electrochemical stability window (~4.14 V). Moreover, the electrolyte membrane can sustain a high thermal decomposition temperature (~305 °C), and thus its mechanical performance is sufficient for practical applications. Accordingly, the ionic liquid-incorporated Zn-ion conducting polymer electrolyte could be a potential candidate for Zn-based energy storage applications.

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“…After 500 charge/discharge cycles at 0.5 C, the Li||LFP battery still retained a high capacity retention of 70% and high average CE up to 99%. [ 71 ] PVDF‐HFP can be prepared as porous materials as well. A PVDF‐HFP based polymer electrolyte composited with a flame‐retardant component, Mg(OH) 2 , has been built by dibutyl phthalate(DBP).…”

Section: Polymer Solid Electrolytesmentioning

confidence: 99%

“…Figure 12.Comparison of different polymer electrolytes. a) Dual-ion polymer electrolytes (GPEs: blue dots,[40,61,62,[66][67][68]70,71,75,[82][83][84][85]88] SPEs: orange dots[89][90][91][92][93][94][95][96]99] ). b) Single-ion polymer electrolytes (GPEs: blue dots,[109,111,[116][117][118][119][120][121][122][123][124][125][126][127][128] SPEs: orange dots[108,114,[129][130][131] ).…”

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confidence: 99%