Article (Scientific journals)
Flame retardant polyphosphoester copolymers as solid polymer electrolyte for lithium batteries
Olmedo-Martínez, Jorge L; Meabe, Leire; Riva, Raphaël et al.
2021In Polymer Chemistry, 12 (23), p. 3441-3450
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Keywords :
battery; polyphosphate
Abstract :
[en] Solid-state lithium batteries are considered one of the most promising battery systems due to their high volumetric energy density and safety. Poly(ethylene oxide) (PEO) is the most commonly used solid polymer electrolyte in solid-state batteries. In this article, we introduce new polyphosphoester polymer electrolytes, which show improved flame retardant properties in comparison with PEO. For this purpose, new polyphosphoester copolymers were synthesized, including phosphoester, poly(ethylene glycol) (PEG) and UV cross-linkable vinyl units. Solid polymer electrolyte films based on polyphosphoester copo- lymers and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) were prepared by curing under UV-light. The crystallinity present in the copolymers due to the PEG segment decreases with the amount of salt in the electrolyte, as seen by DSC. Solid polymer electrolytes based on polyphosphoester copolymers show ionic conductivity values as high as 2 × 10−4 Scm−1 at 70 °C. FTIR analysis showed that lithium cations complexed with phosphoester groups provoked an increase in the lithium transference number to 0.26 as compared to that of PEO 0.17. Pyrolysis flow combustion calorimetry (PCFC) or micro-calorimetry results demonstrated the improved flame retardancy of the polyphosphoesters in comparison to a reference PEO based polymer electrolyte. The selected polyphosphoester solid electrolyte was investigated in a solid-state lithium cell Li0/polymer electrolyte/LFP battery showing a specific capacity retention close to 80% and coulombic efficiency greater than 98% over 100 cycles at 70 °C.
Research center :
Center for Education and Research on Macromolecules (CERM), Belgium
Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Belgium
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Olmedo-Martínez, Jorge L;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain
Meabe, Leire;  Spain Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Vitoria-Gasteiz, Spain
Riva, Raphaël ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Guzmán-González, Gregorio;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain
Porcarelli, Luca;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain > Deakin University, ARC Centre of Excellence for Electromaterials Science and Institute for Frontier Materials, , Melbourne, Australia
Forsyth, Maria;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain > Deakin University, ARC Centre of Excellence for Electromaterials Science and Institute for Frontier Materials, , Melbourne, Australia > IKERBASQUE Basque Foundation for Science, Bilbao, Spain
Mugica, Agurtzane;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain
Calafel, Itxaso;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain
Müller, Alejando J. Müller,;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain > IKERBASQUE Basque Foundation for Science, Bilbao, Spain
Lecomte, Philippe  ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Jérôme, Christine  ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Mecerreyes, David;  University of the Basque Country, POLYMAT, Donostia/SanSebastian, Spain > IKERBASQUE Basque Foundation for Science, Bilbao, Spain
Language :
English
Title :
Flame retardant polyphosphoester copolymers as solid polymer electrolyte for lithium batteries
Publication date :
21 June 2021
Journal title :
Polymer Chemistry
ISSN :
1759-9954
eISSN :
1759-9962
Publisher :
Royal Society of Chemistry, United Kingdom
Volume :
12
Issue :
23
Pages :
3441-3450
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Spanish National Council of Science and Technology
Basque Government [ES]
The Mexican Secretaría de Educación
The IONBIKE-RISE project in the frame of the Marie Curie program
Available on ORBi :
since 05 July 2021

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