Iron electrode for alkali accumulators - comprising surfactant magnetite, ferric oxide synthetic fibre, ferrous sulphide and aq. nickel sulphate in steel tape mesh

摘要

The prodn. of an Fe electrode for alkali accumulators by applying active material to a metal tape mesh comprises adding an aq. soln. of 3-20 wt pts. surfactant (w.r.t. the dry wt. of the active material) to the active material contg. magnetite ore concentrate, Fe2O3, synthetic fibre, industrial FeS and aq. NiSO4 soln. applying to a steel tape mesh, drying 5-10 min. at 150-300 degrees C, treating the resultant electrode with a binder, consisting of 15-20% LiOH suspension in a 20% epoxide resin soln. contg. a hardener, e.g. polyethylenepolyamine, and then drying the electrode for 10-30 min. at 70-160 degrees C. The electrode has better electrical and strength characteristics than the usual lamellar Fe electrodes.