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Single-ion BAB triblock copolymers as highly efficient electrolytes for lithium-metal batteries

Renaud Bouchet 1, 2 Sébastien Maria 3 Rachid Meziane Abdelmaula Aboulaich 4 Livie Liénafa 4 Jean-Pierre Bonnet 5 Trang N. T. Phan 3 Denis Bertin 3 Didier Gigmes 3 Didier Devaux 2 Renaud Denoyel 6 Michel Armand 7
1 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces
2 MADIREL - Matériaux divisés, interfaces, réactivité, électrochimie
3 ICR - Institut de Chimie Radicalaire
4 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
5 GEMH - Groupe d'Etudes des Matériaux Hétérogènes
6 LCP - Laboratoire Chimie Provence
7 LRCS - Laboratoire réactivité et chimie des solides - UMR CNRS 7314
Abstract : Electrochemical energy storage is one of the main societal challenges of this century. The performances of classical lithium-ion technology based on liquid electrolytes have made great advances in the past two decades, but the intrinsic instability of liquid electrolytes results in safety issues. Solid polymer electrolytes would be a perfect solution to those safety issues, miniaturization and enhancement of energy density. However, as in liquids, the fraction of charge carried by lithium ions is small (\textless20%), limiting the power performances. Solid polymer electrolytes operate at 80 degrees C, resulting in poor mechanical properties and a limited electrochemical stability window. Here we describe a multifunctional single-ion polymer electrolyte based on polyanionic block copolymers comprising polystyrene segments. It overcomes most of the above limitations, with a lithium-ion transport number close to unity, excellent mechanical properties and an electrochemical stability window spanning 5V versus Li+/Li. A prototype battery using this polyelectrolyte outperforms a conventional battery based on a polymer electrolyte.
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https://hal-amu.archives-ouvertes.fr/hal-01460435
Contributor : Didier Gigmes <>
Submitted on : Tuesday, February 7, 2017 - 4:41:40 PM
Last modification on : Wednesday, September 15, 2021 - 11:08:06 AM

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UNIV-AMU | CNRS | UNILIM | ICG | IPAM | LEPMI | INC-CNRS | UNIV-SAVOIE | MADIREL | CHIMIE | UNIV-MONTPELLIER | GEMH | UGA | LRCS

Citation

Renaud Bouchet, Sébastien Maria, Rachid Meziane, Abdelmaula Aboulaich, Livie Liénafa, et al.. Single-ion BAB triblock copolymers as highly efficient electrolytes for lithium-metal batteries. Nature Materials, Nature Publishing Group, 2013, 12 (5), pp.452--457. ⟨10.1038/NMAT3602⟩. ⟨hal-01460435⟩

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