LAYERED DOUBLE HYDROXIDE AND METHOD FOR PRODUCTION THEREOF, AND AIR ELECTRODE AND METAL-AIR SECONDARY BATTERY THAT USE SAID LAYERED DOUBLE HYDROXIDE

摘要

Provided is a layered double hydroxide that exhibits an excellent oxygen evolution catalytic function. This layered double hydroxide is represented by the following formula (I):　Ni2+1-(x+y+z)Fe3+xV3+yCo3+z(OH)2An-(x+y+z)/n·mH2O. In formula (I) in an embodiment, (x + y + z) is 0.2-0.5, x is greater than 0 and less than or equal to 0.3, y is 0.04-0.49, and z is greater than 0 and less than or equal to 0.2.