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A High Performance Ceramic-Polymer Separator for Lithium Batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kumar, Jitendra Kichambare, Padmakar Rai, Ashutosh Kr Bhattacharya, R. Rodrigues, Stanley J. Subramanyam, Guru |
| Copyright Year | 2016 |
| Abstract | A three-layered (ceramic-polymer-ceramic) hybrid separator was prepared by coating ceramic electrolyte [lithium aluminum germanium phosphate (LAGP)] over both sides of polyethylene (PE) polymer membrane using Electron beam physical vapor deposition (EB-PVD) technique. Ionic conductivities of membranes were evaluated after soaking PE and LAGP/PE/LAGP membranes in a 1 molar (M) lithium hexafluroarsenate (LiAsF6) electrolyte in ethylene carbonate (EC), dimethyl carbonate (DMC) and ethylmethyl carbonate (EMC) in volume ratio (1:1:1). Scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were employed to evaluate morphology and structure of the separators before and after cycling performance tests to better understand structure-property correlation. As compared to regular PE separator, LAGP/PE/LAGP hybrid separator showed: (i) higher liquid electrolyte uptake, (ii) higher ionic conductivity, (iii) lower interfacial resistance with lithium and (iv) lower cell voltage polarization during lithium cycling at high current density of 1.3 mA.cm at room temperature. The enhanced performance is attributed to higher liquid uptake, LAGP-assisted faster ion conduction and dendrite prevention. Optimization of density and thickness of LAGP layer on PE or other membranes through manipulation of PVD deposition parameters will enable practical applications of this novel hybrid separator in rechargeable lithium batteries with high energy, high power, longer cycle life, and higher safety level. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ecommons.udayton.edu/cgi/viewcontent.cgi?article=1099&context=ece_fac_pub |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Calcium Carbonate 750 MG Chewable Tablet Carbonates Coating Excipient Dendrites Electron Microscopy Ethylenes Extraskeletal Myxoid Chondrosarcoma Germanium Guilty Gear Xrd Ionic Iontophoresis Mathematical morphology Microscopes, Electron, Scanning Physical vapor deposition Polyethylenes Polymer Radionuclide Imaging Rechargeable battery Separators Thickness (graph theory) Tissue membrane Vacuum deposition X-Ray Computed Tomography anatomical layer ethylene carbonate inorganic phosphate lithium hexafluoroarsenate methyl carbonate |
| Content Type | Text |
| Resource Type | Article |
