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Ruthenium-doped MoO3 cathode material in acidic aqueous solution and preparation method of ruthenium-doped MoO3 cathode material

A technology of acidic aqueous solution and cathode material, which is applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of little research on batteries and difficulty in meeting voltage requirements, and achieve the effect of effective electron transfer, good performance, and improved conductivity

Active Publication Date: 2020-03-17
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the theoretical decomposition voltage of water is only 1.23V, even considering the overpotential of hydrogen or oxygen, the maximum voltage of the battery with water as the solvent electrolyte system is only about 2V, which is difficult to meet the voltage requirement of 3-4V, so Little research has been done on batteries with water-based electrolyte systems

Method used

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  • Ruthenium-doped MoO3 cathode material in acidic aqueous solution and preparation method of ruthenium-doped MoO3 cathode material
  • Ruthenium-doped MoO3 cathode material in acidic aqueous solution and preparation method of ruthenium-doped MoO3 cathode material
  • Ruthenium-doped MoO3 cathode material in acidic aqueous solution and preparation method of ruthenium-doped MoO3 cathode material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Take 0.1g of molybdenum disulfide (MoS 2 ) into the cellulose, magnetically stirred for 10 min, and mixed evenly.

[0015] (2) Ruthenium trichloride (RuCl 3 Containing 37% ruthenium) MoS is added according to the molar ratio of molybdenum to ruthenium metal ions is 20:1 2 In the mixture with cellulose, the coating solution was made after magnetic stirring for 30 min.

[0016] (3) Take an appropriate amount of coating solution to brush the titanium plate on one side. After the coating is uniform, put the titanium plate in an oven at 70°C for 10 minutes, and repeat the above coating process after cooling until the total surface of the coating is obtained. The loading capacity is 1.2 mg / cm 2 , and finally the sample was incubated at an annealing temperature of 500 °C for 1 h to obtain RuO with a molar ratio of molybdenum to ruthenium metal ions of 20:1. 2 -MoO 3 / Ti cathode material.

Embodiment 2

[0018] (1) Take 0.1g of molybdenum disulfide (MoS 2 ) into the cellulose, magnetically stirred for 10 min, and mixed evenly.

[0019] (2) Ruthenium trichloride (RuCl 3 Containing 37% ruthenium) MoS is added according to the molar ratio of molybdenum and ruthenium metal ions to 9:1 2 In the mixture with cellulose, the coating solution was made after magnetic stirring for 30 min.

[0020] (3) Take an appropriate amount of coating solution to brush the titanium plate on one side. After the coating is uniform, put the titanium plate in an oven at 70°C for 10 minutes, and repeat the above coating process after cooling until the total surface of the coating is obtained. The loading capacity is 1.2 mg / cm 2 , and finally the sample was incubated at an annealing temperature of 500 °C for 1 h to obtain RuO with a molar ratio of molybdenum to ruthenium ions of 9:1. 2 -MoO 3 / Ti cathode material.

Embodiment 3

[0022] (1) Take 0.1g of molybdenum disulfide (MoS 2 ) into the cellulose, magnetically stirred for 10 min, and mixed evenly.

[0023] (2) Ruthenium trichloride (RuCl 3 Containing 37% ruthenium) MoS is added according to the molar ratio of molybdenum to ruthenium metal ion molar ratio of 5:5 2 In the mixture with cellulose, the coating solution was made after magnetic stirring for 30 min.

[0024] (3) Take an appropriate amount of coating solution to brush the titanium plate on one side. After the coating is uniform, put the titanium plate in an oven at 70°C for 10 minutes, and repeat the above coating process after cooling until the total surface of the coating is obtained. The loading capacity is 1.2 mg / cm 2 , and finally the sample was incubated at an annealing temperature of 500 °C for 1 h to obtain RuO with a molar ratio of molybdenum to ruthenium ions of 5:5. 2 -MoO 3 / Ti cathode material.

[0025] figure 1 For the RuO that embodiment 1 makes 2 -MoO 3 / Ti cathode...

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Abstract

The invention belongs to the technical field of supercapacitor electrode materials, and particularly relates to a ruthenium-doped MoO3 cathode material used in an acidic aqueous solution and a preparation method of the ruthenium-doped MoO3 cathode material. Aiming at few cathode materials or low performance of the cathode materials which can be used in an acidic aqueous solution, the RuO2-MoO3 / Ticathode material is obtained by adding molybdenum disulfide and ruthenium trichloride into cellulose according to a certain proportion, uniformly mixing, coating a treated titanium plate with the mixture, drying, and calcining. Finally, it is found that the material can be used as a cathode material in an acidic aqueous solution, has certain performance, and is low in cost, simple in process and easy to obtain.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrode materials, in particular to ruthenium-doped MoO in acidic aqueous solution 3 Cathode materials and methods for their preparation. Background technique [0002] The cathode materials in the field of fuel cells are the most researched, mainly rare earth elements (La, Nd, Pr, etc.) occupying the A site, surrounding A with ion-electronic mixed conduction characteristics 2 BO 4 A type of perovskite structure material, combined with various electrolytes, exhibits excellent performance as a cathode material. For supercapacitor materials working at room temperature, the cathode materials commonly used are Ni foam, carbon materials and two-dimensional layered transition metal sulfides, but these materials cannot be used for supercapacitors in acidic solutions. The cathode materials that are used in acidic solutions, cooperate with metal oxide anodes and can form two electrodes to form ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/46
CPCH01G11/30H01G11/46Y02E60/13
Inventor 邵艳群张容容林仁津贺四江林雨婷魏新利叶章豪陈孔发
Owner FUZHOU UNIV
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