Preparation method of porous ni-mo-co ternary hydroxide nanosheet supercapacitor material
A supercapacitor, ni-mo-co technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of poor cycle performance and poor conductivity, and achieve low cost, excellent performance, high ratio The effect of capacity
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[0025] In the specific implementation process, the preparation method of the porous Ni-Mo-Co ternary hydroxide nanosheet supercapacitor material firstly pretreats the carbon cloth, and then uses a simple hydrothermal method to grow self-supporting porous on the surface of the carbon cloth. Ni-Mo-Co ternary hydroxide nanosheets, the main function and effect of hydrothermal reaction are: under high temperature and high pressure conditions, the reactants can be partially or completely dissolved, and the reaction proceeds in a state close to homogeneity, resulting in dispersibility Good, high-purity, shape-controllable oxide electrode materials, to obtain supercapacitor materials based on porous Ni-Mo-Co ternary hydroxide nanosheets, the specific steps are as follows:
[0026] 1) Treat commercial carbon cloth with aqua regia to obtain hydrophilic carbon cloth;
[0027] 2) Dissolve the nickel source, molybdenum source, cobalt source, urea and ammonium fluoride in deionized water, s...
Embodiment 1
[0029] Example 1 Preparation of carbon cloth self-supporting porous Ni-Mo-Co ternary hydroxide nanosheet electrode material
[0030] In this example, commercial carbon cloth was treated with aqua regia for 12 hours to obtain hydrophilic carbon cloth; nickel source, molybdenum source, cobalt source, urea and ammonium fluoride were dissolved in deionized water, nickel source, The molar ratio of molybdenum source, cobalt source, urea and ammonium fluoride is 1:1:1:3:1, nickel source is nickel sulfate, molybdenum source is sodium molybdate, cobalt source is cobalt sulfate, fully stirred to obtain a mixed reaction solution , then put the pretreated carbon cloth into the reaction kettle, add the mixed reaction solution, carry out the hydrothermal reaction at 150°C for 3h, wash and dry the carbon cloth self-supporting porous Ni-Mo-Co ternary after the reaction is completed Hydroxide nanosheets, that is, the supercapacitor material based on carbon cloth self-supporting porous Ni-Mo-Co...
Embodiment 2
[0032] Embodiment 2 electrochemical performance test
[0033] The carbon cloth self-supporting porous Ni-Mo-Co ternary hydroxide nanosheets prepared in Example 1 were made into supercapacitor electrodes for electrochemical performance testing. Test results such as image 3 As shown, when the electrolyte concentration is 6mol·L -1 The carbon cloth self-supporting porous Ni-Mo-Co ternary hydroxide nanosheet electrode has a maximum specific capacity of 1388F g -1 ;Depend on Figure 4It can be seen that after 1000 cycles, the Coulombic efficiency remains 100%, and the capacity retention rate is above 83.2%.
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