NOVELTY - Preparing an anion exchange polymer (A) having a structure of interpenetrating polymer network (IPN) or semi-IPN, comprises: (a) preparing a homogeneous reactive solution comprising organic polymer carrier of reactive halo groups, tertiary diamine, monomer comprising a polymerizable ethylene unsaturation, and optionally crosslinking agent comprising at least two ethylenic unsaturations polymerizable by radical polymerization, and radical polymerization initiator in an organic solvent; and (b) heating the obtained solution.    USE - The anion exchange polymer material is useful: as solid electrolyte in an electrochemical device, preferably in an alkaline fuel cell or a battery or air-metal accumulator; and in composite air electrodes (claimed).    ADVANTAGE - The anion exchange polymer material: reduces the degradation of air electrode; is transparent and has a consistency for easy handling.    DETAILED DESCRIPTION - Manufacturing an anion exchange polymer (A) having a structure of interpenetrating network polymer (IPN) or semi-IPN, comprises: (a) preparing a homogeneous reactive solution comprising, in an organic solvent, (a1) at least an organic polymer carrier of reactive halo groups, (b1) at least one tertiary diamine, (c1) at least one monomer comprising a polymerizable ethylene unsaturation polymerizable by radical polymerization, (d1) optionally at least one crosslinking agent comprising at least two ethylenic unsaturations polymerizable by radical polymerization, and (e1) at least one radical polymerization initiator; and (b) heating the solution prepared in step (a) to obtain a temperature and for a duration sufficient for a reaction of nucleophilic substitution between the components (a1) and (b1) and a radical copolymerization reaction of components (c1) and optionally (d1) initiated by the component (e1). INDEPENDENT CLAIMS are included for:    (1) the anion exchange polymer material having IPN structure or semi-(IPN) structure;    (2) composite air electrodes, formed by an air electrode and a IPN material or a semi-IPN conductor of anion, in situ polymerized on the surface of the air electrode;    (3) an alkaline fuel cell comprising cathode, anode, and solid electrolyte disposed between anode and cathode, where the solid electrolyte is an anion exchange polymer material of interpenetrating polymer network type; and    (4) a battery or air-metal accumulator containing an air electrode, a second electrode having opposite air electrode polarity and a liquid electrolyte made of concentrated aqueous solution of alkaline hydroxide, where the air electrode is covered on at least a part of its surface, preferably over its entire surface, and in contact with liquid electrolyte, by a polymer material.