Composite-porous polymer membrane with reduced crystalline for lithium–ion battery via non-solvent evaporate method

Peng, Yan; Huang, Zhao; Lin, Ye; Wu, Xiaoyan; Yang, Yang; Wang, Dan; Chen, Fanglin; Zhang, Chunming; He, Dannong

doi:10.1007/s11581-014-1337-3

Cited by 17 publications

(7 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To overcome this issue, a high loading (70 wt%) of Al 2 O 3 nanoparticles (40–50 nm) was incorporated into a PVDF matrix to help reduce pore size and shrinkage as well as aid in lithium dendrite suppression, thermal stability, and electrolyte wetting. Although there have been numerous reports on PVDF and PVDF composite separators, and even several reports that combined phase inversion with ceramic fillers using either coagulation baths or nonsolvent incorporated (“dry”) methods, none of these have leveraged such combinations to enable the deposition of the a porous, high‐performance battery membrane layer via additive manufacturing.…”

Section: Resultsmentioning

confidence: 99%

3D Printable Ceramic–Polymer Electrolytes for Flexible High‐Performance Li‐Ion Batteries with Enhanced Thermal Stability

Blake

Kohlmeyer

Hardin

et al. 2017

Advanced Energy Materials

175

137

View full text Add to dashboard Cite

This study establishes an approach to 3D print Li‐ion battery electrolytes with controlled porosity using a dry phase inversion method. This ink formulation utilizes poly(vinyldene fluoride) in a mixture of N‐methyl‐2‐pyrrolidone (good solvent) and glycerol (weak nonsolvent) to generate porosity during a simple drying step. When a nanosized Al2O3 filler is included in the ink, uniform sub‐micrometer pore formation is attained. In other words, no additional processing steps such as coagulation baths, stretching, or etching are required for full functionality of the electrolyte, which makes it a viable candidate to enable completely additively manufactured Li‐ion batteries. Compared to commercial polyolefin separators, these electrolytes demonstrate comparable high rate electrochemical performance (e.g., 5 C), but possess better wetting characteristics and enhanced thermal stability. Additionally, this dry phase inversion method can be extended to printable composite electrodes, yielding enhanced flexibility and electrochemical performance over electrodes prepared with only good solvent. Finally, sequentially printing this electrolyte ink over a composite electrode via a direct write extrusion technique has been demonstrated while maintaining expected functionality in both layers. These ink formulations are an enabling step toward completely printed batteries and can allow direct integration of a flexible power source in restricted device areas or on nonplanar surfaces.

show abstract

Section: Resultsmentioning

confidence: 99%

3D Printable Ceramic–Polymer Electrolytes for Flexible High‐Performance Li‐Ion Batteries with Enhanced Thermal Stability

Blake

Kohlmeyer

Hardin

et al. 2017

Advanced Energy Materials

175

137

View full text Add to dashboard Cite

show abstract

“…The bulk impedance of the SPE was measured by the AC impedance method at the amplitude of 10 mV, and the frequency window was from 1 MHz to 1 Hz. The ionic conductivity was determined by Equation (1):

where σ is lithium ionic conductivity (S cm −1 ), d is the thickness of SPE membranes, A is the area of SPE membranes (cm 2 ), and R b is the bulk impedance of SPE (Ω) [ 32 , 33 , 34 ].…”

Section: Methodsmentioning

confidence: 99%

“…where σ is lithium ionic conductivity (S cm −1 ), d is the thickness of SPE membranes, A is the area of SPE membranes (cm 2 ), and R b is the bulk impedance of SPE (Ω) [32][33][34].…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Epoxy-Based Interlocking Membranes for All Solid-State Lithium Ion Batteries: The Effects of Amine Curing Agents on Electrochemical Properties

Yeh

Lee

et al. 2021

Polymers

View full text Add to dashboard Cite

In this study, a series of crosslinked membranes were prepared as solid polymer electrolytes (SPEs) for all-solid-state lithium ion batteries (ASSLIBs). An epoxy-containing copolymer (glycidyl methacrylate-co-poly(ethylene glycol) methyl ether methacrylate, PGA) and two amine curing agents, linear Jeffamine ED2003 and hyperbranched polyethyleneimine (PEI), were utilized to prepare SPEs with various crosslinking degrees. The PGA/polyethylene oxide (PEO) blends were cured by ED2003 and PEI to obtain slightly and heavily crosslinked structures, respectively. For further optimizing the interfacial and the electrochemical properties, an interlocking bilayer membrane based on overlapping and subsequent curing of PGA/PEO/ED2003 and PEO/PEI layers was developed. The presence of this amino/epoxy network can inhibit PEO crystallinity and maintain the dimensional stability of membranes. For the slightly crosslinked PGA/PEO/ED2003 membrane, an ionic conductivity of 5.61 × 10−4 S cm−1 and a lithium ion transference number (tLi+) of 0.43 were obtained, along with a specific capacity of 156 mAh g−1 (0.05 C) acquired from an assembled half-cell battery. However, the capacity retention retained only 54% after 100 cycles (0.2 C, 80 °C), possibly because the PEO-based electrolyte was inclined to recrystallize after long term thermal treatment. On the other hand, the highly crosslinked PGA/PEO/PEI membrane exhibited a similar ionic conductivity of 3.44 × 10−4 S cm−1 and a tLi+ of 0.52. Yet, poor interfacial adhesion between the membrane and the cathode brought about a low specific capacity of 48 mAh g−1. For the reinforced interlocking bilayer membrane, an ionic conductivity of 3.24 × 10−4 S cm−1 and a tLi+ of 0.42 could be achieved. Moreover, the capacity retention reached as high as 80% after 100 cycles (0.2 C, 80 °C). This is because the presence of the epoxy-based interlocking bilayer structure can block the pathway of lithium dendrite puncture effectively. We demonstrate that the unique interlocking bilayer structure is capable of offering a new approach to fabricate a robust SPE for ASSLIBs.

show abstract

“…Generally, they are modified by doping with inorganic fillers [ 12 ]. Inorganic fillers (such as SiO 2 [ 13 , 14 , 15 , 16 ], TiO 2 [ 17 ], Al 2 O 3 [ 6 , 18 ], ZnO [ 19 ], etc.) doped into the polymer membrane are able to effectively improve all aspects of the membrane performance.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of PVDF–HFP-Based Gel Polymer Electrolyte with the Dopant of Octavinyl-Polyhedral Oligomeric Silsesquioxane

Guo

Chen

et al. 2021

Materials

View full text Add to dashboard Cite

Gel polymer electrolytes have the advantages of both a solid electrolyte and a liquid electrolyte. As a transitional product before which a solid electrolyte can be comprehensively used, gel polymer electrolytes are of great research value. They can reduce the risk of spontaneous combustion and explosion caused by leakage during the use of conventional liquid electrolytes. Poly(vinylidene-fluoride-co-hexafluoropropylene) (PVDF–HFP), a material with excellent performance, has been widely utilized in the preparation of gel polymer electrolytes. Here, PVDF–HFP-based gel polymer membranes with polyvinyl pyrrolidone (PVP) pores were prepared using a phase inversion method, and Octavinyl-polyhedral oligomeric silsesquioxane (OVAPOSS) was doped to improve its temperature resistance as well as its ionic conductivity, to enhance its safety and electrochemical performance. The final prepared polymer membrane had a porosity of 85.06% and still had a certain mechanical strength at 160 °C without any shrinkage. The gel polymer electrolyte prepared with this polymer membrane had an ionic conductivity of 1.62 × 10−3 S·cm−1 at 30 °C, as well as an electrochemical window of about 5.5 V. The LiCoO2-Li button half-cell prepared therefrom had a specific capacity of 141 mAh·g−1 at a rate of 1C. The coulombic efficiency remained above 99% within 100 cycles and the capacity retention rate reached 99.5%, which reveals an excellent cycling stability.

show abstract

Composite-porous polymer membrane with reduced crystalline for lithium–ion battery via non-solvent evaporate method

Cited by 17 publications

References 24 publications

3D Printable Ceramic–Polymer Electrolytes for Flexible High‐Performance Li‐Ion Batteries with Enhanced Thermal Stability

3D Printable Ceramic–Polymer Electrolytes for Flexible High‐Performance Li‐Ion Batteries with Enhanced Thermal Stability

Epoxy-Based Interlocking Membranes for All Solid-State Lithium Ion Batteries: The Effects of Amine Curing Agents on Electrochemical Properties

Performance Improvement of PVDF–HFP-Based Gel Polymer Electrolyte with the Dopant of Octavinyl-Polyhedral Oligomeric Silsesquioxane

Contact Info

Product

Resources

About