1.3 多孔镍析氢电极的研究多孔镍材料要有Raney镍和泡沫镍两种。2

1.3 Study porous nickel electrode hydrogen evolution <br>porous nickel material to have two kinds of Raney nickel and nickel foam. 1920s, Raney found that Ni-Al (Ni-Zn) alloy in alkaline solution to Al. As the most classic of porous electrodes, Raney-Ni electrode has been in use ever since. However, during the preparation of Raney-Ni electrode, Raney-Ni alloy as the starting material high purity to ensure high activity and stability, and some require high temperature and pressure plasma equipment and conditions, so that production costs increase; in addition, Raney-Ni electrode current weak resilience exist, an electrode catalyst for a long time the soluble component caused problems such as decreased activity of an electrode when power is lost [27] <br>a nickel battery electrode material mainly used in particular for a NiMH battery, a nickel cadmium also manufactured - one of the best electrode material such as nickel batteries - and nickel-hydrogen batteries. Successful tests developed by the process of electrodeposition techniques for preparing foamed nickel. The base material used is a porous open cell foam, a nickel electroplating electrolyte thick plating, the conductive layer can be prepared in vacuo and nickel-plated conductive paste immersion three methods can in general pre-plated nickel sulfate Nickel, after ignition, the reduction annealing step excellent properties can be obtained foamed nickel material.

1.3 Study of porous nickel-desist eddy hydrogen electrodes<br>The porous nickel material should have Raney nickel and foam nickel. In the 1920s, Raney discovered that the Ni-Al alloy dissolved Al in the lye. As the most classic porous electrode, the Raney-Ni electrode has been used ever since. However, in the preparation process of the Raney-Ni electrode, the high purity Raney-Ni alloy is required as raw material to ensure its high activity and stability, and some also require plasma equipment and high temperature and high pressure conditions, which increase the preparation cost; The electrode catalytic component ssoiss easily dissolves out in the case of long-term power loss, resulting in reduced electrode activity. <br>Foam nickel is mainly used in battery electrode materials especially for NiMH batteries, foam nickel is also one of the best electrode materials for the manufacture of cadmium-nickel batteries and hydrogen-nickel batteries. The process of preparing foam nickel by electrodesicing technology was successfully developed by experiment. The substrate material used is porous open foam, using chemical nickel plating, vacuum nickel plating and immersion conductive adhesive can be prepared conductive layer, by pre-plating nickel can be plated in the common sulfate nickel electrolysis, after burning, reduction, annealing process can get excellent performance of the foam nickel material.

1.3 porous nickel electrode for hydrogen evolution<br>Porous nickel materials include two kinds of Raney nickel and nickel foam. In 1920s, Raney found that Ni Al (Ni Zn) alloy dissolved Al in alkaline solution. As the most classical porous electrode, Raney Ni electrode has been used up to now. However, in the preparation of Raney Ni electrode, high-purity Raney Ni alloy is needed as raw material to ensure its high activity and stability. Some need plasma equipment and high temperature and pressure conditions to increase the preparation cost. In addition, there are still problems such as weak anti reverse current ability of Raney Ni electrode, and the electrode catalytic components are easy to dissolve under long-time power failure, which leads to the decrease of electrode activity [27]<br>Nickel foam is mainly used for battery electrode materials, especially for NiMH batteries. Nickel foam is also one of the best electrode materials for manufacturing cadmium nickel batteries and hydrogen nickel batteries. The process of preparing nickel foam by electrodeposition technology has been successfully developed through experiments. The matrix material used is porous porous foamed plastic, and the conductive layer can be prepared by three methods, namely, electroless nickel plating, vacuum nickel plating and immersion conductive adhesive. Nickel is plated into the common sulphate nickel plating electrolyte, and then thick nickel is plated. After the ignition, reduction and annealing process, the nickel foam material with excellent performance can be obtained.<br>