The invention relates to electrochromic assemblies having a layer structure, characterized in that one layer is an electrically conductive, electrochromic polydioxythiophene and a further layer is an ion-storage compound selected or a mixture of ion-storage compounds of the formulae (I) to (XIV).

        Me.sup.1 O           (I)       Me.sup.1 (OH).sub.2  (IX)
        Me.sup.1 O.sub.X     (II)      Me.sup.1 O(OH)  (X)
        M.sub.X Me.sup.1 O   (III)     MMe.sup.1 O.sub.2  (XI)
        M.sub.X Me.sup.1 O.sub.2  (IV)      Me.sup.1 O.sub.2  (XII)
        M.sub.x Me.sup.1 O.sub.y  (V)       Me.sup.1.sub.2 O.sub.3  (XIII)
        Me.sup.2 O.sub.3     (VI)      Me.sup.1.sub.2 O.sub.3.H.sub.2 O (XIV)
        M.sub.X Me.sup.2 O.sub.3  (VII)
        M.sub.X Me.sup.2.sub.(1-x) O.sub.3  (VIII)
where Me.sup.1 and Me.sup.2 each represent a metal transition group VI or VII of the Mendeleev Periodic Table, M represents a metal of main group I of the Mendeleev Periodic Table or a proton, x represents a number from 0.001 to 5, y represents a number from 0.001 to 5.

A invenção relaciona-se aos conjuntos electrochromic que têm uma estrutura da camada, caracterizada nessa uma camada é um eletricamente condutor, o polydioxythiophene electrochromic e uma camada mais adicional são um composto do íon-armazenamento selecionado ou uma mistura de compostos do íon-armazenamento das fórmulas (I) a (XIV). Me.sup.1 O (I) Me.sup.1 (OH).sub.2 (ix) Me.sup.1 O.sub.X (ii) Me.sup.1 O(OH) (X) M.sub.X Me.sup.1 O (iii) MMe.sup.1 O.sub.2 (XI) M.sub.X Me.sup.1 O.sub.2 (iv) Me.sup.1 O.sub.2 (XII) M.sub.x Me.sup.1 O.sub.y (V) Me.sup.1.sub.2 O.sub.3 (XIII) Me.sup.2 O.sub.3 (vi) Me.sup.1.sub.2 O.sub.3.H.sub.2 O (XIV) M.sub.X Me.sup.2 O.sub.3 (vii) M.sub.X Me.sup.2.sub.(1-x) O.sub.3 (viii) onde Me.sup.1 e Me.sup.2 cada um representam um grupo da transição do metal VI ou VII da tabela periódica de Mendeleev, M representa um metal do grupo principal I da tabela periódica de Mendeleev ou um proton, x representa um número de 0.001 a 5, y representa um número de 0.001 a 5.

 
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