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Application of trinickel disulfide electrode material to electro-catalytic oxidation of hydrazine hydrate

A technology of nickel disulfide and electrocatalytic oxidation, which is used in chemical analysis, battery electrodes, circuits, etc. using catalysis, and can solve problems such as unseen patent applications.

Inactive Publication Date: 2016-06-08
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention uses trinickel disulfide as the electrode material for the electrocatalytic oxidation of hydrazine hydrate, and there are no relevant literature reports and patent applications

Method used

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  • Application of trinickel disulfide electrode material to electro-catalytic oxidation of hydrazine hydrate
  • Application of trinickel disulfide electrode material to electro-catalytic oxidation of hydrazine hydrate
  • Application of trinickel disulfide electrode material to electro-catalytic oxidation of hydrazine hydrate

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Embodiment 1

[0028] Cyclic voltammetry curves obtained at a scan rate of 50 mV / s in 0 and 10 mM hydrazine hydrate solutions using an electrode based on nickel disulfide, as figure 2 . After adding hydrazine hydrate, the curve appears about the electrocatalytic oxidation peak of hydrazine hydrate at 0.5V, and the peak current density is as high as 9.64mAcm –2 . At the same time, the curve rises rapidly at –0.15V, indicating a lower initial voltage. It is shown that nickel trisulfide has a high ability to electrocatalyze the oxidation of hydrazine hydrate, including high current density and low onset potential, and can be used as an anode material for hydrazine hydrate fuel cells.

Embodiment 2

[0030] Using an electrode based on nickel disulfide, test its chronoamperometry curve to 10mM hydrazine hydrate at a working voltage of 0.5V, such as image 3 . After the electrode reaches its diffusion equilibrium in 100s, it maintains a stable current density in the next 900s, indicating that nickel disulfide has good durability for the electrocatalytic oxidation of hydrazine hydrate and can be used as an anode material for hydrazine hydrate fuel cells.

Embodiment 3

[0032] Using an electrode based on nickel disulfide, at a working voltage of 0.5V, test its response to different concentrations (1, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400 , 500μM) sensitive properties of hydrazine hydrate, such as Figure 4 , 5 shown. The response time of the electrode to 1μM hydrazine hydrate is only 4.8s, and within the measured concentration range, the response value can be well maintained after reaching equilibrium; at the same time, it has good linearity in the test range of 1 to 300μM, and the calculated detection limit As low as 0.045μM. It shows that nickel trisulfide has good dynamic response characteristics, high sensitivity and good linearity to hydrazine hydrate, and it can be applied to the electrode material of hydrazine hydrate electrochemical sensor.

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Abstract

The invention relates to application of a trinickel disulfide electrode material to electro-catalytic oxidation of hydrazine hydrate and belongs to the field of an electro-catalytic oxidation electrode material. Trinickel disulfide provided by the invention is used as an electrode active material and is used for related application to the electro-catalytic oxidation of the hydrazine hydrate of a hydrazine hydrate fuel cell anode and a hydrazine hydrate electrochemical sensor electrode. When the trinickel disulfide is used for a hydrazine hydrate fuel cell anode material, the trinickel disulfide has the advantages of high current density, low onset potential and durability; when the trinickel disulfide is used as a hydrazine hydrate electrochemical sensor electrode material, the trinickel disulfide has the advantages of high sensitivity, high linear responses, high stability and good anti-interference capability. The trinickel disulfide electrode material is low in price and good in properties and has a relatively good actual application value.

Description

technical field [0001] The invention relates to the application of electrocatalytic oxidation of hydrazine hydrate as an electrode material of trinickel disulfide, and belongs to the field of electrocatalytic oxidation electrode materials. Background technique [0002] Electrooxidation of hydrazine hydrate is mainly used in hydrazine hydrate fuel cells and hydrazine hydrate electrochemical sensors. [0003] Since hydrazine hydrate has a high hydrogen content (8wt.%) comparable to sodium borohydride, methanol, and formaldehyde, it is considered to be an ideal fuel for fuel cells. The fuel cell using hydrazine hydrate as fuel (hydrazine hydrate fuel cell) has high theoretical cell voltage and high energy density, and its cell reaction products are environmentally friendly nitrogen and water, and does not contain intermediate products such as carbonyl, which can reduce the difficulty of battery design . Therefore, the direct hydrazine hydrate fuel cell is considered to be an ...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/92G01N31/10
CPCG01N31/10H01M4/90H01M4/9008H01M4/92Y02E60/50
Inventor 王毓德刘旭管洪涛
Owner YUNNAN UNIV
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