A superior composite gel polymer electrolyte of Li7La3Zr2O12- poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) for rechargeable solid-state lithium ion batteries

Recent advances in gel polymer electrolyte for high-performance lithium batteries

“…Currently, inorganic solid electrolytes have played significant role in solid-state Li batteries. Liang et al [32] reported a novel organic-inorganic GPE based on PVDF-HFP containing Li 7 La 3 Zr 2 O 12 powder. The composite GPE exhibited a good ionic transmission improvement of 3.71 × 10 −4 S cm −1 , a fine Li ion transference number of 0.58 and an electrochemical window of up to 4.65 V at room temperature.…”

Anion-immobilized solid composite electrolytes based on metal-organic frameworks and superacid ZrO2 fillers for high-performance all solid-state lithium metal batteries

“…Based on the above analysis, the low discharge specific capacities of the conventional cell may be caused by the poor interface compatibility. Table 3 summarizes the performances of the PVDF-HFP-based SCEs, the specific capacities of the cells without the liquid electrolytes and ionic liquid are lower (< 150 mAh•g -1 at 0.1 C), the results illustrate that the interface compatibilities (solid electrolyte/electrodes) impede the cycle performance of ASSLMBs, because the lithium-ionic migration is suppressed at solid electrolyte/ electrodes interfaces, especially at high cycle-rates [56][57], thus the composite cells in this work maybe among the best of them. To further demonstrate the above conjectures, the composite cells and the conventional cells are tested by EIS at 20°C and 60°C, respectively.…”

A Three-Dimensional Electrospun Li6.4La3Zr1.4Ta0.6O12–Poly (Vinylidene Fluoride-Hexafluoropropylene) Gel Polymer Electrolyte for Rechargeable Solid-State Lithium Ion Batteries

“…The PVDF-HFP-LLZTO membrane displays T m at 133°C, which is much lower than that of PVDF-HFP (144°C). It can be attributed to the LLZTO nanoparticle doping that decreases the degree of crystallinity of PVDF-HFP and enlarges the amorphous region in the PVDF-HFP matrix, as well as accelerate dynamic processes with plasticizing effect ( Xia et al, 2017 ; Liang et al, 2018 ).…”

“…But these doping inert ceramic fillers may block the lithium-ion conducting routes because they cannot transfer the lithium ions. It is a feasible way to replace the inert ceramic fillers by some lithium ion conductors, such as Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) ( Xia et al, 2017 ), Li 0.33 La 0.557 TiO 3 (LLTO) ( Le et al, 2016 ), and Li 7 La 3 Zr 2 O 12 (LLZO) ( Liang et al, 2018 ). Among these lithium ion conductors, garnet LLZO has attracted much attention due to its outstanding stability with lithium metal anode and superior ionic conductivity ( Zhang X. et al, 2017 ; Zhou et al, 2020 ).…”