Preparation and physicochemical performances of poly[(vinylidene fluoride)‐<i>co</i>‐hexafluoropropylene]‐based composite polymer electrolytes doped with modified carbon nanotubes

Xiao, Wei; Li, Xinhai; Guo, Huajun; Wang, Zhixing; Li, Yan; Yang, Bo

doi:10.1002/pi.4506

Cited by 9 publications

(7 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cheng et al controlled the structure and crystallinity of microporous polymers for use as electrolyte membranes by varying the polymer composition to maximize the ionic conductivity of the electrolyte . Microstructured polymers are typically made using thermally induced phase separation, − phase inversion, − spinodal decomposition, − or lithography. − These commonly used solution-phase methods rely on tailoring the chemical and physical properties of multicomponent solutions. In this work, we demonstrate the formation of microstructured polymer films by the deposition of cross-linked polymers at liquidvapor interfaces via initiated chemical vapor deposition (iCVD).…”

Section: Introductionmentioning

confidence: 99%

Microstructured Films Formed on Liquid Substrates via Initiated Chemical Vapor Deposition of Cross-Linked Polymers

Bradley

Gupta

2015

Langmuir

View full text Add to dashboard Cite

We studied the formation of microstructured films at liquid surfaces via vapor phase polymerization of cross-linked polymers. The films were composed of micron-sized coral-like structures that originate at the liquid-vapor interface and extend vertically. The growth mechanism of the microstructures was determined to be simultaneous aggregation of the polymer on the liquid surface and wetting of the liquid on the growing aggregates. We demonstrated that we can increase the height of the microstructures and increase the surface roughness of the films by either decreasing the liquid viscosity or decreasing the polymer deposition rate. Our vapor phase method can be extended to synthesize functional, free-standing copolymer microstructured thin films for potential applications in tissue engineering, electrolyte membranes, and separations.

show abstract

Section: Introductionmentioning

confidence: 99%

Microstructured Films Formed on Liquid Substrates via Initiated Chemical Vapor Deposition of Cross-Linked Polymers

Bradley

Gupta

2015

Langmuir

View full text Add to dashboard Cite

show abstract

“…Those results suggest that adding inorganic particles into the polymer matrix can impair the crystallinity of the polymer electrolyte membranes and release more amorphous areas for lithium ions transfer, which are the same as our previous results (Wang et al, 2018c ). What is noteworthy is that the CPE-LCT membrane demonstrated in Figure 3 presents the weakest intensity, and we have reasons to speculate that the CPE-LCT may have high ionic conductivity at room temperature, which can be partly attributed to the Lewis acid-base interactions between the doped particles and the polymer chains, and partly to the increasing amorphous areas (Xiao et al, 2014a ). Moreover, the new peak can be observed at 32.6° in the doped CPE membranes, which can be ascribed to the characteristic diffraction peak of the as-synthesized perovskite Li 0.1 Ca 0.9 TiO 3 inorganic particles that are well indexed to the JCPDS#82-0228.…”

Section: Resultsmentioning

confidence: 94%

High Performance Composite Polymer Electrolytes Doped With Spherical-Like and Honeycomb Structural Li0.1Ca0.9TiO3 Particles

et al. 2018

Self Cite

View full text Add to dashboard Cite

The spherical-like and honeycomb structural Li0.1Ca0.9TiO3 particles are prepared by spray drying combined with following calcination confirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive X-ray spectrometer (EDS). The poly (vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP))-based composite polymer electrolytes (CPEs) modified with the particles are fabricated by phase inversion and activation processes. The characterization results show that the as-prepared CPE membranes possess the smoothest surface and most abundant micropores with the lowest crystallinity with adding the particles into the polymer matrix, which results in high ionic conductivity (3.947 mS cm−1) and lithium ion transference number (0.4962) at ambient temperature. The interfacial resistance can be quickly stabilized at 508 Ω after 5 days storage and the electrochemical working window is up to 5.2 V. Moreover, the mechanical strength of the membranes gains significant improvement without lowering the ionic conductivity. Furthermore, the assembled coin cell can also deliver high discharge specific capacity and preserve steady cycle performance at different current densities. Those outstanding properties may be ascribed to the distinctive structure of the tailored spherical-like and honeycomb structural Li0.1Ca0.9TiO3 particles, which can guarantee the desirable CPEs as a new promising candidate for the polymer electrolyte.

show abstract

“…where l is the thickness of the CPE, S is the effective contact area and R is obtained from Nyquist impedance plots . The electrochemical working window of Li/CPE/SS asymmetrical cells was measured by linear sweep voltammetry (LSV).…”

Section: Methodsmentioning

confidence: 99%

Effect of various electrophoretically deposited nano‐silica contents on the properties of poly(vinylidene fluoride‐co‐hexafluoropropylene)‐based electrospun polymer electrolytes

Xiao

Miao

Yan

et al. 2015

Polymer International

Self Cite

View full text Add to dashboard Cite

Poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) based composite polymer electrolyte (CPE) membranes were successfully prepared by electrospinning followed by electrophoretic deposition processes, and desirable polymer electrolytes were obtained after being activated in liquid electrolytes. The physicochemical properties of the CPEs with different electrophoretically deposited nano-SiO 2 contents were investigated by SEM, XRD, TGA, linear sweep voltammetry and electrochemical impedance spectroscopy measurements. When the ratio of electrophoretically deposited nano-SiO 2 to P(VDF-HFP) is up to 4 wt%, the results show that the CPE membrane presents a very uniform surface with abundant interconnected micropores and possesses excellent mechanical tensile strength with high thermal and electrochemical stability; the ionic conductivity at room temperature can reach 3.361 mS cm −1 and the reciprocal temperature dependence of the ionic conductivity follows a Vogel − Tamman − Fulcher relationship. The interfacial resistance of the assembled Li/CPE/Li simulated cell can rapidly increase to a steady value of about 950 from the initial value of about 700 at 30 ∘ C during 15 days' storage. The battery performance test suggests that the CPE also shows excellent compatible properties with commercial LiCoO 2 and graphite materials.

show abstract

Preparation and physicochemical performances of poly[(vinylidene fluoride)‐co‐hexafluoropropylene]‐based composite polymer electrolytes doped with modified carbon nanotubes

Cited by 9 publications

References 20 publications

Microstructured Films Formed on Liquid Substrates via Initiated Chemical Vapor Deposition of Cross-Linked Polymers

Microstructured Films Formed on Liquid Substrates via Initiated Chemical Vapor Deposition of Cross-Linked Polymers

High Performance Composite Polymer Electrolytes Doped With Spherical-Like and Honeycomb Structural Li0.1Ca0.9TiO3 Particles

Effect of various electrophoretically deposited nano‐silica contents on the properties of poly(vinylidene fluoride‐co‐hexafluoropropylene)‐based electrospun polymer electrolytes

Contact Info

Product

Resources

About