Flexible poly(vinylidene fluoride-<i>co</i>-hexafluoropropylene)-based gel polymer electrolyte for high-performance lithium-ion batteries

Zhang, Pan; Li, Rui; Huang, Jian; Liu, Boyu; Zhou, Mingjiong; Wen, Bizheng; Xia, Yonggao; Okada, Shigeto

doi:10.1039/d1ra01250a

Cited by 41 publications

(26 citation statements)

References 35 publications

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“…LMBs based on the PHGE-Li electrolyte showed the highest capacity retention rate of 92.3%, which was significantly higher than PLE (74.2%) and PGE-Li electrolytes (88.2%) and attributed to the higher IC and faster Li + transport of the PHGE-Li electrolyte. 36,61 The charge and discharge curves of LMBs under different cycles showed that LFP/PHGE-Li/Li had a lower polarization voltage (Figures 7c,d and S4a−d). In addition, electrochemical impedance spectroscopy (EIS, Figure S4e,f) also showed that the LFP/ PHGE-Li/Li battery had lower interfacial resistance, implying that PHGE-Li stably contacted the Li anode and had excellent interfacial compatibility.…”

Section: Acs Applied Materials and Interfacesmentioning

confidence: 99%

Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Thanks to their high energy density, lithium/sodium metal batteries (LMBs/SMBs) are considered to be the most promising next-generation energy storage system. However, the instability of the electrode/electrolyte interface and dendrite growth seriously hinders commercial application of LMBs/SMBs. In addition, traditional liquid electrolytes are inflammable and explosive. As a key part of the battery, the electrolyte plays an important role in solving the abovementioned problems. Although solid electrolytes can alleviate dendrite growth and liquid electrolyte leakage, their low ionic conductivity and poor interfacial contact are not conducive to improvement of overall LMBs/SMB performances. Therefore, it is necessary to find a balance between liquid and solid electrolytes. Gel polymer electrolytes (GPEs) are one means for achieving high-performance LMBs/SMBs because they combine the advantages of liquid and solid electrolytes. Metal–organic frameworks (MOFs) benefit from high specific surface areas, ordered internal porous structures, organic–inorganic hybrid properties, and show great potential in modified electrolytes. Here, Cu-based MOF-supported poly(ethylene oxide) composite gel polymer electrolytes (CGPEs) were prepared by ultraviolet curing. This CGPE exhibited high ionic conductivity, a wide electrochemical window, and a high ion transference number. In addition, it also exhibited excellent cycle stability in symmetric batteries and LMBs/SMBs. This study showed that CGPE had great practical application potential in the next-generation LMBs/SMBs.

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Section: Acs Applied Materials and Interfacesmentioning

confidence: 99%

Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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“…GPEs are usually prepared by immersing a porous polymer membrane in an LE. However, the intrinsic safety issues caused by LEs can be avoided by using gel and solid-type electrolytes [ 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Thermally Stable PVDF-HFP-Based Gel Polymer Electrolytes for High-Performance Lithium-Ion Batteries

et al. 2022

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The development of gel polymer electrolytes (GPEs) for lithium-ion batteries (LIBs) has paved the way to powering futuristic technological applications such as hybrid electric vehicles and portable electronic devices. Despite their multiple advantages, non-aqueous liquid electrolytes (LEs) possess certain drawbacks, such as plasticizers with flammable ethers and esters, electrochemical instability, and fluctuations in the active voltage scale, which limit the safety and working span of the batteries. However, these shortcomings can be rectified using GPEs, which result in the enhancement of functional properties such as thermal, chemical, and mechanical stability; electrolyte uptake; and ionic conductivity. Thus, we report on PVDF-HFP/PMMA/PVAc-based GPEs comprising poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) and poly(methyl methacrylate) (PMMA) host polymers and poly(vinyl acetate) (PVAc) as a guest polymer. A physicochemical characterization of the polymer membrane with GPE was conducted, and the electrochemical performance of the NCM811/Li half-cell with GPE was evaluated. The GPE exhibited an ionic conductivity of 4.24 × 10−4 S cm−1, and the NCM811/Li half-cell with GPE delivered an initial specific discharge capacity of 204 mAh g−1 at a current rate of 0.1 C. The cells exhibited excellent cyclic performance with 88% capacity retention after 50 cycles. Thus, this study presents a promising strategy for maintaining capacity retention, safety, and stable cyclic performance in rechargeable LIBs.

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“…For example, PVDF-HFP has been blended with other molecules such as poly(ethylene oxide) (PEO), poly(methyl methacrylate) (PMMA), poly(vinyl acetate) (PVAc), poly(vinyl chloride) (PVC), thermoplastic polyurethane (TPU), poly(methyl methacrylate-co-acrylonitrile-co-lithium methacrylate) (PMAML), poly(ionic liquid), polysiloxane, and carboxymethyl cellulose (CMC). 8,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] Here, it is notable that these polymer electrolytes have been developed for solid-state batteries (SSBs), which are one of the post-lithium-ion batteries (PLIBs) including sodium-ion batteries (SIBs), lithium-sulfur batteries (LSBs), and lithium-air batteries (LABs). [27][28][29][30][31][32] Specically, the peruoropolyether-based block copolymer electrolyte was designed for ultra-stable SIBs.…”

Section: Introductionmentioning

confidence: 99%

Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors

Kim

2022

RSC Adv.

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Flexible poly(vinylidene fluoride-co-hexafluoropropylene)-based gel polymer electrolyte for high-performance lithium-ion batteries

Abstract: Gel polymer electrolytes (GPEs) have attracted ever-increasing attention in Li-ion batteries, due to their great thermal stability and excellent electrochemical performance.

Cited by 41 publications

References 35 publications

Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Metal–Organic Framework-Supported Poly(ethylene oxide) Composite Gel Polymer Electrolytes for High-Performance Lithium/Sodium Metal Batteries

Thermally Stable PVDF-HFP-Based Gel Polymer Electrolytes for High-Performance Lithium-Ion Batteries

Phase behavior of binary and ternary fluoropolymer (PVDF-HFP) solutions for single-ion conductors

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