Eniricerche S.p.a.

Eniriceche S.p.a.

Luca Marchese

Arnaldo Roggero

Maria Andrei

Stefano Passerini

Bruno Scrosati

Paola Prosperi

Marco Ferrari

Process for preparing a solid, polymeric electrolyte, in membrane from, characterized in that: (1) a mixture is prepared, which contains:

Process for preparing a solid, polymeric electrolyte based on polyvinyl

An electrochromic window comprises a tungsten oxide electrode on a transparent conductive glass sheet and a nickel oxide counterelectrode. The counterelectrode is activated by electrochemical intercalation of lithium on a transparent conductive glass sheet. The window also comprises a solid polymeric electrolyte interposed between the electrode and the counterelectrode. The electrolyte is formed by a solid solution of an ionic lithium compound in a solid crosslinked polyepoxide. The polyepoxide is obtained by copolymerization of a monoepoxide with a diepoxide.

Electrochromic window, based on a polymeric polyepoxy electrolyte

A solid, polymeric electrolyte is prepared by:

Solid, polymeric, polyether based electrolyte

A solid polymer electrolyte in membrane form, consisting of a solid solution of an ionic compound dissolved in a polyether, is obtained by copolymerizing a vinyl ether with an allyl vinyl ether to obtain a copolymer with allyl unsaturations; hydrosilylating the allyl double bond of this copolymer by reaction with an alkoxysilane to obtain a hydrosilylated copolymer; and cross-linking the hydrosilylated copolymer by means of a diprotic cross-linking agent, operating in solution in an organic solvent in the presence of an ionic compound, and evaporating the solvent to obtain a membrane.

Solid polymer electrolyte based on cross-linked polyvinylether

A solid, polymeric electrolyte is constituted by a solid solution of an ionic compound in a polyepoxide, wherein said polyepoxide is the product of copolymerization of a monoepoxide of formula: ##STR1## wherein: R stands for methyl or ethyl radical; and

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Luca Marchese