1.2 复合析氢电极的研究复合电沉积是在电沉积基础上发展起来的一项新技

1.2 Composite hydrogen evolution electrode <br>composite electrodeposition is a new technology developed on the basis of electrodeposition, it is currently prepared using the electrocatalytic activity of the composite electrodeposition of the composite electrode to increase the hydrogen evolution electrode. Composite electrodeposition techniques is one or more insoluble solid particles (such as oxides, metal powders, carbides, nitrides, etc.) added to the plating solution, so that when the insoluble particles electrodeposited composite coating is deposited to form the composite electrode [twenty one]. This method enables plating layer containing particles can be improved coating properties, not only to improve the wear resistance and hardness and other mechanical properties; also improved electrocatalytic activity for hydrogen evolution. There is a big difference between simply mixed with the composite material between its one of the biggest difference is that you can make the performance between the various components of the composite obtained by rational mix design strengths and weaknesses complement, while not the main cause of serious performance material missing. Composite electrodeposition time for high current production, processing and maintenance cost is low and easy to operate, has a surface coating made with strong, good uniformity, etc., and therefore, has been widely used. A composite electrode according to the type of the second phase particles into the particles can be divided into inorganic composite electrode, the composite electrode and the organic particles are a metal powder composite electrode 3 categories.

1.2 Study of composite hydrogen analysis electrodes<br>Composite electrodeumum is a new technique developed on the basis of electrodesdonion, and the composite electrode is prepared by compound electrodeum. The compound electrodeumpation technique is to add one or several insoluble solid particles (e.g. oxides, metal powders, carbides, nitrides, etc.) to the plating solution, and to deposit insoluble particles into the coating when electrosdepositis is made to form a composite electrode. This method can make the coating contain particles that can improve the coating performance, not only improve the mechanical properties such as wear resistance and hardness, but also improve the electrocatalytic activity of hydrogen analysis. There is a big difference between the simple mixing of composite materials and materials, one of the biggest differences is that the performance of the composite components can be complemented by reasonable ingredient design, without causing serious loss of the main performance of the material. Composite electrodesibles are suitable for long-term production of large currents, low processing and maintenance costs and easy operation, and the prepared surface coating has the advantages of strong binding force and good uniformity, so it has been widely used. Composite electrodes can be divided into three categories of inorganic particle composite electrodes, organic particle composite electrodes and metal powder composite electrodes according to the type of second-phase particles added.

1.2 research on composite hydrogen evolution electrode<br>Composite electrodeposition is a new technology developed on the basis of electrodeposition. At present, composite electrodeposition is used to prepare composite electrode to improve the electrocatalytic activity of hydrogen evolution electrode. Composite electrodeposition technology is to add one or several insoluble solid particles (such as oxide, metal powder, carbide, nitride, etc.) into the electroplating solution, and make the insoluble particles composite into the coating during electrodeposition to form composite electrode [21]. This method can make the coating contain particles which can improve the coating performance, not only improve the mechanical properties such as wear resistance and hardness, but also improve the electrocatalytic activity of hydrogen evolution. There is a big difference between the simple mixing of composite materials and materials. One of the biggest difference is that the performance of each composite component can be complemented by a reasonable mix design, while the main performance of the material will not be seriously missed. Composite electrodeposition is suitable for long-term production with high current, low cost of processing and maintenance, and easy to operate. The surface coating prepared by composite electrodeposition has the advantages of strong adhesion and good uniformity, so it has been widely used. According to the type of the second phase particles, the composite electrode can be divided into three categories: inorganic particle composite electrode, organic particle composite electrode and metal powder composite electrode.<br>