Salt-leached microporous membranes for lithium batteries

Zeytuni, Eda; Uğur, Mustafa Hulusi; Çakmakçı, Emrah; Güngör, Atilla

doi:10.1007/s11581-014-1148-6

Cited by 9 publications

(7 citation statements)

References 48 publications

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“…The electroactive phases of PVDF are obtained by several techniques such as solution casting, spin coating and Langmuir-Blodgett deposition. But these microporous membranes are handicapped by low porosity and poor wettability [10,[16][17][18]. Electrospinning is another useful technique to obtain nonwoven mats with fiber diameters ranging from micrometers to a few nanometers.…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

et al. 2016

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Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

et al. 2016

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“…Figure shows the electrochemical stability of the highest conducting PI‐based polymer electrolyte as a function of voltage. The cells prepared by using SS electrode, a lithium counter, and a lithium reference electrode . Previously reported that the liquid phase decomposed at the surface of the lithium, thereby severely affecting the electrochemical performance, such as the cyclability of the lithium electrode .…”

Section: Resultsmentioning

confidence: 99%

“…The cells prepared by using SS electrode, a lithium counter, and a lithium reference electrode. [20,31] Previously reported that the liquid phase decomposed at the surface of the lithium, thereby severely affecting the electrochemical performance, such as the cyclability of the lithium electrode. [32] Thus, the high stability of the PEs may be due to the absence of any impurities, which is a welcome feature because it permits their use in high voltage battery applications.…”

Section: Linear Sweep Voltammetrymentioning

confidence: 99%

Naphthalene‐based polyimide electrolytes for lithium‐ion battery applications

et al. 2016

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The preparation of 2,6-Bis(m-amino phenoxy) benzoyl naphthalene-based polyimides for solid polymer electrolytes was reported. Li-salt and PEO bearing polyimide membranes were prepared. Thermo-gravimetric analysis results reveal that the PI/PEO/LiCF 3 SO 3 polymer electrolyte membranes are thermally stable up to 500°C.The "T g " values are in the range 167-221.5°C according to dynamic mechanical analysis (DMA). The conductivities of Li-salt and PEO containing PI membranes are in the range of 10 −7 -10 −5 S/cm. The conductivity increases with incorporation of PEO and Li + concentration. The linear sweep voltammetry experiments showed that no peaks were observed between 1.75 and 4.5 V. K E Y W O R D Simpedance spectroscopy, Li batteries, polyimides, solid polymer electrolytes

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“…Therefore, two pairs of Helmholtz coils can generate a uniform magnetic flux along a desired direction in a 2D plane and can align the ferro-actuator in that direction. 24–28…”

Section: Methodsmentioning

confidence: 99%

“…For a fabrication of porous membrane, there are several methods, including the phase-inversion method, electro spinning, and particulate leaching. [20][21][22][23][24] Among these fabrication methods for a porous membrane, we selected a particulate leaching method and fabricated a porous PVDF membrane using ZnO. Ferro-fluid was then absorbed on the porous PVDF membrane using a dip-coated method and the proposed ferro-actuator was completed.…”

Section: Introductionmentioning

confidence: 99%

Development of a cantilever-type ferro-actuator using a porous PVDF membrane

Kim

Park

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, we propose a cantilever-type ferro-actuator using porous polyvinylidene fluoride (PVDF) membrane. Generally, a ferro-actuator is fabricated by the absorption of ferro-fluid on a backbone membrane containing strongly magnetized nanoscale Fe particles that are responsive to an external magnetic field. We suggest a porous PVDF membrane fabricated using a zinc oxide (ZnO) particulate leaching method as a backbone membrane of the ferro-actuator to increase the absorption of ferro-fluid. Ferro-fluid is absorbed on the porous PVDF membrane using a dip-coating method. First, we observe from scanning electron microscopic images the surfaces and cross sections of a pure PVDF membrane and the porous PVDF membrane using a ZnO particulate leaching method. Second, an energy-dispersive X-ray spectroscope is used to confirm the configuration of the elements and the absorption of Fe particles in the ferro-actuator. Third, we execute thermogravimetric analysis and X-ray diffraction analysis of the pure PVDF membrane, the PVDF membrane before/after particulate leaching, and of the ferro-actuator using the porous PVDF membrane. Through these analyses, we can confirm that ZnO particles in the PVDF membrane were clearly removed by the particulate leaching method and Fe particles were included in the fabricated ferro-actuator. Finally, we fabricate cantilever-type ferro-actuators using pure PVDF membrane and the porous PVDF membrane and execute blocking force and displacement tests. Compared with the ferro-actuator using the pure PVDF membrane, the ferro-actuator using the porous PVDF membrane had an increased displacements—about a 3-fold increase at the DC input and at the AC input, along with increased blocking force (about a 6-fold increase) at the DC input. Consequently, the concept that a ferro-actuator using the porous PVDF membrane exhibits enhanced actuating performance is validated.

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Salt-leached microporous membranes for lithium batteries

Cited by 9 publications

References 48 publications

Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

Naphthalene‐based polyimide electrolytes for lithium‐ion battery applications

Development of a cantilever-type ferro-actuator using a porous PVDF membrane

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