TY - JOUR
T1 - Quasi-solid polymer-in-ceramic membrane for Li-ion batteries
AU - Blanga, R.
AU - Golodnitsky, D.
AU - Ardel, G.
AU - Freedman, K.
AU - Gladkich, A.
AU - Rosenberg, Yu
AU - Nathan, M.
AU - Peled, E.
N1 - Funding Information:
Work funded by the European Commission in the Seventh Framework Program FP7-2010-GC-ELECTROCHEMICAL STORAGE , contract no. 265971 “Lithium-Air Batteries with split Oxygen Harvesting and Redox processes” (LABOHR) and by Israel National Research Center for Electrochemical Propulsion–INREP founded by Israel Academy of Science and Humanities .
PY - 2013
Y1 - 2013
N2 - The method of electrophoretic deposition (EPD) was used to fabricate ion-conducting polymer-in-ceramic membranes. TGA, DSC, XRD, TOFSIMS, ESEM and AC-impedance tests were used for the characterization of the films. We found that the relative content of polyethylene oxide and LiAlO2 in the membrane depends on the type of solvent and composition of the suspension. Films deposited at 50 V are smoother, conformal and more uniform than those prepared at 100, 150 and 200 V. TOFSIMS positive-ion-species images showed that with increase in concentration of ceramic powder in the suspension, the deposition of PEO occurs predominantly between the LiAlO2 particles. The ionic conductivity of a composite membrane, with impregnated 0.3 M LiTFSI-PYR 14TFSI ionic-liquid electrolyte is 1-3 mS/cm at 30-60 C and comparable to that of commercial battery separators. The conductivity of quasi-solid plasticized PEO-in-LiAlO2 electrolyte is 0.2 mS/cm at room temperature and does not change up to 100 C. When deposited on a Si anode the membrane conformally follows the contours of the rough electrode surface and provides strong mechanical integrity to the anode, enabling improved capacity of the Li/Si cell. This study paves the way for the application of a new simple EPD approach to the preparation of wide-temperature-range quasi-solid lithium-ion conducting electrolytes.
AB - The method of electrophoretic deposition (EPD) was used to fabricate ion-conducting polymer-in-ceramic membranes. TGA, DSC, XRD, TOFSIMS, ESEM and AC-impedance tests were used for the characterization of the films. We found that the relative content of polyethylene oxide and LiAlO2 in the membrane depends on the type of solvent and composition of the suspension. Films deposited at 50 V are smoother, conformal and more uniform than those prepared at 100, 150 and 200 V. TOFSIMS positive-ion-species images showed that with increase in concentration of ceramic powder in the suspension, the deposition of PEO occurs predominantly between the LiAlO2 particles. The ionic conductivity of a composite membrane, with impregnated 0.3 M LiTFSI-PYR 14TFSI ionic-liquid electrolyte is 1-3 mS/cm at 30-60 C and comparable to that of commercial battery separators. The conductivity of quasi-solid plasticized PEO-in-LiAlO2 electrolyte is 0.2 mS/cm at room temperature and does not change up to 100 C. When deposited on a Si anode the membrane conformally follows the contours of the rough electrode surface and provides strong mechanical integrity to the anode, enabling improved capacity of the Li/Si cell. This study paves the way for the application of a new simple EPD approach to the preparation of wide-temperature-range quasi-solid lithium-ion conducting electrolytes.
KW - Electrophoretic deposition
KW - Ion conductivity
KW - Polymer-in-ceramic electrolyte
UR - http://www.scopus.com/inward/record.url?scp=84887210278&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2013.09.106
DO - 10.1016/j.electacta.2013.09.106
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:84887210278
SN - 0013-4686
VL - 114
SP - 325
EP - 333
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -