Chemically anchored liquid-PEO based block copolymer electrolytes for solid-state lithium-ion batteries

Autor:	Elio Poggi, Jean-Pierre Bourgeois, Jérémy Brassinne, Jean-François Gohy, Alexandru Vlad, Julien Rolland
Rok vydání:	2014
Předmět:	Materials science Ethylene oxide Renewable Energy Sustainability and the Environment Ionic bonding General Chemistry Electrolyte Electrochemistry chemistry.chemical_compound chemistry Chemical engineering Melting point Copolymer Ionic conductivity General Materials Science Crystallite
Zdroj:	J. Mater. Chem. A. 2:11839-11846
ISSN:	2050-7496 2050-7488
Popis:	Solid-state electrolytes are being considered the keystone element for the development of safer all-solid-state lithium-ion batteries. While poly(ethylene oxide) (PEO) solid-state polymer electrolytes are known to support a Li+ flux, satisfying conductivities are reached only above the melting point of the PEO crystallites (>65 °C) rendering PEO unpractical. Herein, by means of block-copolymer engineering, we design a mechanically clamped liquid-PEO electrolyte that combines the high ionic conductivity of a low molecular mass PEO while retaining the dimensional integrity of a solid material. Attractive ionic conductivities of about 0.01 mS cm−1 are attained at room temperature without compromising mechanical properties. The electrolyte shows a wide electrochemical stability window and help in building a stable interface with lithium metal. Competitive performances are attained when integrating the developed materials into operational/functional prototype batteries highlighting the provided potential.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::26b3ed54164ce7c3a5e8c89c6424cea1 https://doi.org/10.1039/c4ta02327g Zobrazit plný text záznamu