化学复合镀制备高活性节能NiCo_2O_4电极

Preparation of NiCo_2O_4 electrode by composite electroless

在贱金属铁基表面化学镀Ni Co P ,然后通过化学复合镀制得Ni Co P Al2 O3 底层 ,复合镀层用NaOH溶液浸出 ,可制得新型Ni Co P微孔活性中间层。在中间层上再涂覆匹配性较好的NiCo2 O4 表面活性层 ,该表面活性层由一定浓度配比的Ni(NO3 ) 2 和Co(NO3 ) 2 通过高温热解而成。X射线衍射结果表明表面活性层是由NiCo2 O4 组成 ,不存在NiO和Co3 O4 的独立相。这种新型表面活性层用于碱性水电解时具有析氧催化活性高 ,稳定性好等特点。

Electroless plating Ni Co P and composite electroless plating Ni Co P Al 2O 3 subsequently on Fe substrate were presented. After Ni Co P Al 2O 3 coatings immersed in 5 mol/L NaOH solution, a new micro hole and active coating was formed. Deposition of the active NiCo 2O 4 coating on surface of Ni Co P coating was formed after heat treatment in 2.0 mol/L Ni(NO 3) 2 CO(NO 3) 2 mixing solutions at high temperature. Composition of the surface coating (NiCo 2O 4) was verified by X ray diffraction analysis, which showed that no NiO and Co 3O 4 existed. The new DSA for alkaline water electrolysis has higher catalytic activity and longer life time.