Positive electrode material and positive electrode for secondary alkaline cell and their preparation method

The invention relates to the anode material and anode used in the alkali secondary battery and relative preparation method. Said anode material comprises the power crystal of compound as [Ni4-xAl(OH)10-2x]OH*mH2O, which is layered hydroxide, while the x ranges from -0.5 to 0.5 and the m ranges from 3-5. The prepared [Ni4-xAl(OH)10-2x]OH*mH2O powder crystal, the conductive agent and the polytetrafluoroethylene are mixed in the quantity proportions as 50-70:15-25:5-10 to be abraded, dried and compressed to attain said anode. The ideal chemical component is [Ni4Al(OH)10]OH*5H2O, whose discharge capacity can reach 300mAh*g-1, which is stable in strong alkali solution, with better discharge/charge reversibility. The invention can be used in alkali secondary battery.