Reference : CO2-sourced polycarbonates as solid electrolytes for room temperature operation lithi...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/233823
CO2-sourced polycarbonates as solid electrolytes for room temperature operation lithium battery
English
Ouhib, Farid [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM), Belgium > > > >]
Meabe, Leire [University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain > > > >]
Mahmoud, Abdelfattah [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Group of Research in Energy and ENvironment from MATerials (Greenmat) and Laboratory of Structural Inorganic Chemistry (LCIS), Belgium > > > >]
Esrhaghi, Nicolas [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Group of Research in Energy and ENvironment from MATerials (Greenmat) and Laboratory of Structural Inorganic Chemistry (LCIS), Belgium > > > >]
Grignard, Bruno [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM), Belgium > > > >]
Thomassin, Jean-Michel [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM), Belgium > > > >]
Aqil, Abdelhafid [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM), Belgium > > > >]
Boschini, Frédéric mailto [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Group of Research in Energy and ENvironment from MATerials (Greenmat) and Laboratory of Structural Inorganic Chemistry (LCIS), Belgium > > > >]
Jérôme, Christine mailto [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM), Belgium > > > >]
Mecerreyes, David [University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain > > > >]
Detrembleur, Christophe mailto [University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM), Belgium > > > >]
28-Apr-2019
Journal of Materials Chemistry A
Royal Society of Chemistry
7
16
9844-9853
Yes (verified by ORBi)
International
2050-7488
2050-7496
United Kingdom
[en] battery ; polycarbonate ; supercritical carbon dioxide
[en] In the last years, polycarbonates have been identified as alternatives to poly(ethylene oxide) as polymer electrolytes for lithium battery applications. In this work, we show the design of CO2-sourced polycarbonates for its use in a room temperature lithium battery. Novel functional polycarbonates alternating oxo-carbonate moieties and polyethylene oxide segments are synthesized by the facile room temperature (rt) organocatalyzed polyaddition of CO2-sourced bis(?-alkylidene carbonate)s (bis-?CCs) with polyethylene oxide diols. The effect of the polyethylene oxide molar mass on the ionic conductivity and on the thermal properties of the poly(oxo-carbonate)s is investigated. The best candidate shows a low glass temperature of -44°C and a high ionic conductivity of 3.75 * 10-5 S cm-1 at rt when loaded with 30 wt% bis(trifluoromethanesulfonyl)imide salt (LiTFSI) without any solvent. All solid semi-interpenetrated network polymer electrolyte (SIN-SPE) is then fabricated by UV-cross-linking of a mixture containing a specifically designed poly(oxo-carbonate) bearing methacrylate pendants, diethylene glycol diacrylate and the previously described poly(oxo-carbonate) containing LiTFSI. The resulting self-standing membrane exhibits a high oxidation stability up to 5 V (vs Li/Li+), an ionic conductivity of 1.1 * 10-5 S cm-1 at rt (10-4 S cm-1 at 60°C) and promising mechanical properties. Assembled in a half cell configuration with LiFePO4 (LFP) as cathode and lithium as anode, the all-solid cell delivers a discharge capacity of 161 mAh g-1 at 0.1C and 60°C, which is very close to the theoretical capacity of LFP (170 mAh g-1). Also, a stable reversible cycling capacity over 400 cycles with high coulombic efficiency of 99 % is noted at 1C. Similar results are obtained at rt provided that 10 wt% of tetraglyme as plastisizer were added to SIN-SPE.
I.
Complex and Entangled Systems from Atoms to Materials (CESAM) ; Center for Education and Research on Macromolecules (CERM), Belgium
Fédération Wallonie Bruxelles. Fonds de la Recherche Scientifique - F.R.S.-FNRS ; Fonds Wetenschappelijk Onderzoek - FWO ; Walloon Region ; The Excellence of Science (EOS) program ; The Basque Government ; The European Research Council ; The European Community in the frame of the "Suspol" project
Researchers
http://hdl.handle.net/2268/233823
10.1039/C9TA01564G

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