Polymer-garnet composite electrolyte based on comb-like structured polymer for lithium-metal batteries

Pandurangan, Swathi; Kaliyappan, Karthik; Ramaswamy, Arun Prasath; Murugan, Ramaswamy

doi:10.1016/j.mtener.2021.100836

Cited by 20 publications

(9 citation statements)

References 49 publications

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“…Differential scanning calorimetry (DSC) was performed to analyze the thermal behavior of the electrolyte films, shown in Figure a. The endothermic crystalline melting temperature ( T m ) peak at 69.2 °C in P6L shifted to a lower temperature in the composites: 62.4 °C in P6SyL and 57.4 °C in P6SL, due to the increased amorphous region in the PEO with the addition of filler . Hollow spherical SLATP provoked the lowest T m .…”

Section: Resultscontrasting

confidence: 54%

“…The endothermic crystalline melting temperature (T m ) peak at 69.2 °C in P6L shifted to a lower temperature in the composites: 62.4 °C in P6SyL and 57.4 °C in P6SL, due to the increased amorphous region in the PEO with the addition of filler. 33 Hollow spherical SLATP provoked the lowest T m . The hollow spherical microstructure strengthened the resulting CSE.…”

Section: Structural Analysis Of the Latp Filler Materialsmentioning

confidence: 98%

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A Multiscale Hollow Spherical LATP Active Filler Improves Conductivity and Mechanical Strength in Composite Solid Electrolytes for Li Batteries

2022

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Polymer-based electrolytes would be ideal for all-solid-state Li metal batteries due to the superior processability of polymers and their ability to make good interfaces with electrode materials. However, polymer electrolytes have lower room temperature Li+ conductivities than desired. Composite solid electrolytes (CSEs) containing both polymer and ceramic filler have far greater conductivity than the polymer alone, and it is believed this is due to conduction paths along the polymer–ceramic interface. A strategy often pursued for increasing conductivity has been to engineer the filler with a high aspect ratio shape, such as nanorods or interconnected nanofibers. In this work we employ a multiscale hollow spherical filler, which is not directional but achieves similar conductivity to those with fibrous morphologies. The hollow spherical shape avoids agglomeration and provides continuous Li+ transfer channels. We fabricated multiscale hollow spherical ceramic Li1.3Al0.3Ti1.7(PO4)3 (LATP) nanoparticles for use in a poly(ethylene oxide) (PEO) matrix. This network also provided structural support and enhanced the mechanical properties of the polymer matrix, which is important for a battery electrolyte. The resulting CSE membrane had room temperature ionic conductivity of 1.64 × 10–4 S/cm. Li/Li symmetric cells using this CSE showed no short circuits for 500 h cycling at a current density 0.1 mA cm–2. Control cells using standard LATP powder showed higher overpotential and dendrite failure, as did the polymer membrane with no LATP.

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Section: Resultscontrasting

confidence: 54%

Section: Structural Analysis Of the Latp Filler Materialsmentioning

confidence: 98%

A Multiscale Hollow Spherical LATP Active Filler Improves Conductivity and Mechanical Strength in Composite Solid Electrolytes for Li Batteries

2022

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“…The calculated interfacial resistance value from the EIS fit for Li|CCPE|Li after polarization around 16.82 Ω/cm 2 and for Li|NCCPE|Li after polarization is 2804.8 Ω/cm 2 . The cross-linked network structure of CCPE enables superior transference of Li-ion numbers by providing a flexible path for a higher rate of cation transfer …”

Section: Resultsmentioning

confidence: 99%

“…The cross-linked network structure of CCPE enables superior transference of Li-ion numbers by providing a flexible path for a higher rate of cation transfer. 42 The stripping and plating profiles were measured by fabricating the symmetric cells of Li|CCPE|Li and Li| NCCPE|Li at 60 °C to analyze the interface stability of Li metal with developed polymer electrolytes at a constant current density of 0.05 mA/cm 2 . CCPE exhibited low polarization voltage as shown in Figure 7a of 0.02 to 0.02 V with stable Li plating and stripping until 200 h. In contrast, NCCPE showed a huge polarization voltage of 0.09 to −0.09 V until 50 h, further increasing the polarization voltage from 0.15 to −0.15 V. Comparatively, CCPE provides more stable stripping/plating performance than NCCPE over a 200 h run.…”

Section: Resultsmentioning

confidence: 99%

Cross-Linked Polymer Composite Electrolyte Incorporated with Waste Seashell Based Nanofiller for Lithium Metal Batteries

et al. 2023

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The next-generation electric vehicle requires superior safety and high-energy-density batteries for better performance. Currently, solid polymer electrolytes provide better safety, high mechanical stability, and a desirable electrode-toelectrolyte interface in lithium-ion batteries compared to those in conventional battery systems. However, the ionic conductivity of solid-state electrolytes remains challenging at room and low operating temperatures. Herein, we report that incorporating a greener calcium hydroxide (CH) based nanofiller derived from natural waste seashells with polymer electrolyte gives a tremendously increased lithium-ion conductivity of 4.12 × 10 −5 S cm −1 at 25 °C. The cross-linked composite polymer electrolyte (CCPE) was prepared with PEO, LiClO 4 salt, greener nanofiller, and cross-linking monomers via the facile ultraviolet (UV) polymerization technique. The photosensitive vinyl groups of diacrylate and the thio groups of the tetrathiol monomer undergo a thiol−ene click reaction to form a highly cross-linked network with homogeneously distributed LiClO 4 and CH nanofiller. The incorporation of 15 wt % of CH greener nanofiller significantly improved the amorphous phase of the composite electrolyte and showed a wide electrochemical window of 5 V. The fine porous structure of CH greener nanofiller incorporated in the solid-state cross-linked network electrolyte channelizes for smooth lithium-ion mobility. The fabricated full cell exhibits good discharge capacity, of 160 mAh g −1 to 150 mAh g −1 at 0.1 C over 50 cycles with a high Coulombic efficiency of 95 % at 60 °C. Naturally derived, cost-effective greener nanofiller from waste seashells acts as a prominent additive to prepare solid-state electrolytes with high stability in lithium metal batteries.

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“…The electrolytes possessed superb ionic conductivity was 1.12 × 10 À 4 S/m and displayed a stable voltage window (Figure 7(f)). Similarly, Pandurangan's work [100] reported an electrolyte mem-brane made of hybrid polymers and garnet consisting of PEO, Li 6.28 Al 0.24 La 3 Zr 2 O 12 , LiClO 4 , and comb-like structured polymer. As a result, the electrolyte membrane showed an excellent performance with superb lithium-ion conductivity at room temperature, a broad potential voltage window, and a great lithium-ion transference number.…”

Section: Llzo/polymer Sces With Different Polymer Matrixmentioning

confidence: 95%

Rational Design of LLZO/Polymer Solid Electrolytes for Solid‐State Batteries

Liu

Xiao

Peng

et al. 2022

Chemistry An Asian Journal

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Hybrid composite electrolytes incorporate polymer matrixes and garnet filler attract the focus of concern for all‐solid‐state batteries, which possess high ionic conductivity, superior electrochemical stability, and wide electrochemical window of ceramic electrolyte advantages, and exhibit excellent flexibility and tensile shear strength from polymer electrolyte benefits. Hence, the unique structure design of solid‐state electrolytes resolves the existing defects that the use of either single garnet or polymer electrolytes implemented into battery devices. This review summarizes Li7La3Zr2O12 (LLZO)/polymer solid composite electrolytes (SCEs), comprising LLZO/polymer SCEs with various structures and different ratios of LLZO fillers, LLZO/polymer with different kinds of polymers matrix and hybrid lithium‐salt, and Li+ transport pathways within the LLZO/polymers SCEs interface. The purpose here is to propose the viewpoints and challenges of LLZO/polymer SCEs to promote the development of next‐generation solid electrolytes.

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Polymer-garnet composite electrolyte based on comb-like structured polymer for lithium-metal batteries

Cited by 20 publications

References 49 publications

A Multiscale Hollow Spherical LATP Active Filler Improves Conductivity and Mechanical Strength in Composite Solid Electrolytes for Li Batteries

A Multiscale Hollow Spherical LATP Active Filler Improves Conductivity and Mechanical Strength in Composite Solid Electrolytes for Li Batteries

Cross-Linked Polymer Composite Electrolyte Incorporated with Waste Seashell Based Nanofiller for Lithium Metal Batteries

Rational Design of LLZO/Polymer Solid Electrolytes for Solid‐State Batteries

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