Study On The Anode Performance Of Gold Ore-based Alloy Preparation And Modification And Its Production Of Muddy Nickel-metal Hydride Battery

Cobalt-based alloys have high cycle stability and discharge capacity for electrochemical hydrogen storage.But high costs have prevented further development,and there is still plenty of room to increase capacity.In this paper,cobalt-copper silicon alloy(Co_0.9Cu_0.1Si)was prepared by mechanical alloying method,which was used as the main body of the alloy.Carbonated polyaniline nanotubes,nickel sulfide/carbon nanotube composite,PANI/Ti₃C₂T_x,Mo S₂/Ti₃C₂Tx and cobalt,nickel atom doped carbon nitride were introduced to prepare cobalt-based modified alloys.The components of the modified alloy were qualitatively and quantitatively analyzed,and the electrochemical hydrogen storage performance of the modified alloy was discussed when it was used in the negative electrode of nickel-metal hydride batteries.The research results are as follows:1.Polyaniline（PANI）,template polyaniline（PANI.β-CD）,carbonized polyaniline（C-PANI）and carbonized polyaniline（PANI.β-CD）nanotubes were introduced into the main body of cobalt copper silicon alloy by mechanical alloying method to prepare the modified alloy.The results show that the electrochemistry of the modified alloy is better than that of cobalt copper silicon alloy.This is because the excellent electrochemical performance of polyaniline and the template agent polymerize polyaniline into nanotube structure,the carbonization treatment strengthens the structural strength of the tube,and the electrochemical hydrogen storage performance is improved after the surface modification of the alloy particles.At the same time,the best proportion of introduction was found out,and the carbonized polyaniline nanotubes of 3%,5%,7%were introduced into the cobalt-copsi-Si alloy for alloy electrode modification.Results show that the carbide polyaniline nanotubes into 5%of modified alloy discharge capacity reached 554 m Ah·g^-1,effectively improve the electrochemical hydrogen storage alloy electrode capacity.2.Two kinds of nickel sulfide（α-Ni S,β-Ni S）and carbon nanotube composite（α-Ni S/MWCNTs,β-Ni S/MWCNTs）were introduced into the main body of Cu_0.9Cu_0.1Si alloy by mechanical alloying method.It was found that the properties of the modified alloy were better than those of the original Cu_0.9Cu_0.1Si alloy.This is attributed to the excellent conductivity of nickel sulfide and the large number of electron transfer channels provided by carbon nanotubes with hydrogen storage space.The doping treatment strengthens the hydrogen adsorption process.In order to find out the best proportion of introduction,3%,5%and 7%β-NIS-MWcnts were introduced into the main body of Cu_0.9Cu_0.1Si alloy respectively,and the experimental data showed that the best proportion of introduction ofβ-Ni S/MWCNTs was 5%.The modified alloy maximum discharge capacity of 590.3 m Ah·g^-1,capacity rate reached 63.5%.The strategy of introducing nickel sulfide/carbon nanotube composites into the alloy body is proved to be effective.Mechanical entanglement method,south wind In the alloy,the study found that their respective characteristics and nature,can both like the basic and the body,this book can also strengthen the superior activities of the blow,and more wind bone and electric light temperament,and can also increase the rhyme to strengthen the role of the predecessor,and more good at maneuvering flashing,and more wind swift and fierce All this,take it as well.If the husband is based on it,he will also take it as well.4.Ti₃C₂T_x and MoS₂/Ti₃C₂T_x were introduced into the main body of Cu_0.9Cu_0.1Si alloy by mechanical alloying method.It was found that the properties of the modified alloy were better than those of Cu_0.9Cu_0.1Si alloy alloy,which was due to the excellent conductivity of Ti₃C₂Tx and the strong catalytic activity of Mo S₂.Mo S₂ is embedded in the layer of Ti₃C₂Tx by one-pot hydrothermal method,which provides the active site to participate in the reaction efficiently and improves the hydrogen storage capacity of the alloy.The discharge capacity and cycle stability of the modified cobalt-copper-silicon alloy are improved,which indicates that the dopant can effectively improve the electrochemical hydrogen storage performance of the alloy electrode.5.Cobalt and nickel atom doped carbon nitride（Co-g-C₃N₄,Ni-g-C₃N₄）were introduced into the main body of cobalt-copper-silicon alloy by mechanical alloying method as modifiers.It is found that the properties of the modified agent are better than those of the cobalt-copper-silicon alloy.This is due to the improvement of the electronic properties of g-C₃N₄ by the doping of Co and Ni atoms,which makes it more conducive to the electrode reaction of cobalt-copper-silicon alloy,and effectively increases the concentration of hydrogen in the alloy electrode.The discharge capacity and cycling stability of the alloy are significantly improved after the introduction of the modifier.This indicates that these two materials enhance the electrochemical hydrogen storage capacity.