Effect of precipitant on preparation of Ni–Co spinel oxide by coprecipitation method

Ni–Co spinel oxide was synthesized via the coprecipitation method. Hydroxide, carbonate, and oxalic acid were used as precipitants in order to compare their effect on the physicochemical properties and electrocatalytic properties of oxide. The result shows that hydroxide coprecipitation method can prepare Ni–Co spinel oxide with specific surface area of 67.19 m2/g, and the oxide has the best electrocatalytic behaviors in contrast to the oxide prepared by the other two precipitants.