Nickelelektrode für Alkaliakkumulator

摘要

A nickel electrode with a non-sintered support, for alkaline storage cells, has a porous three-dimensional conductive structure and an active material contg. beta nickel hydroxide particles, the novelty being that the hydroxide has one or more of the following characteristics: (a) an x-ray diffraction (103) line/(200) line intensity ratio of 0.95-1.15; (b) a coherence length (L) of 10-16 nm., where L = ( ( (100)<2>. (001)) (100) )<1/3> (001) = crystallite sizes calculated from the mid-height width of the (100) and (001) lines respectively; (c) a ratio of the sum of the areas of the RAMAN spectrum 3677-3697 and 3590-1610 cm.<-1> peaks to the area of the 3570-3590 cm.<-1> peak of 0.08-0.14; and (d) a ratio of the area of the RAMAN spectrum 501-k521 cm.<-1> peak to the area of the 450-470 cm.<-1> peak of 1.0-1.2. Also claimed are (i) a process for prepn., by pptn. from soln., of the hydroxide contained in the above electrode; (ii) a storage cell contg. the above electrode; and (iii) a storage battery contg. such cells.