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A method for optimizing the anti-corrosion performance of nickel-based electrodes

An optimization method and electrode technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of reduced catalytic activity and shortened life of battery stacks, and achieve the effects of improving anti-corrosion performance, easy operation, and reducing the impact of impurities

Active Publication Date: 2022-04-26
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above problems, the present invention discloses a method for optimizing the anti-corrosion performance of nickel-based electrodes, which solves the problem that the catalytic activity of the molten carbonate fuel cell stack is reduced due to the corrosion and dissolution of the electrodes, thereby shortening the life of the cell stack.

Method used

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  • A method for optimizing the anti-corrosion performance of nickel-based electrodes
  • A method for optimizing the anti-corrosion performance of nickel-based electrodes

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Step 1: Add a certain amount of deionized water to the glass container, add NiCl 2 , NaH 2 PO 4 and NH 4 Cl, stir evenly at a speed of 100r / min to obtain an electroless plating solution, the molar concentration of nickel ions in the electroless plating solution is 0.05mol / L, the concentration of dihydrogen phosphate ions is 0.2mol / L, NH 4 The concentration of Cl is 0.4mol / L;

[0033] Step 2: Place the glass container containing the electroless plating solution on a heater with a magnetic stirring function to stir at a speed of 1000r / min, while heating to 85°C, and adjusting the pH to 3.0;

[0034] Step 3: Suspend the nickel-based electrode vertically in the electroless plating solution, maintain the stirring speed, temperature and pH of step 2 for 10 minutes, and obtain a nickel-based electrode with a coating on the surface.

Embodiment 2

[0036] Step 1: Add a certain amount of deionized water to the glass container, add NiSO4, KH 2 PO 4 and NH 3 ·H 2 O, after stirring at a speed of 500r / min to obtain an electroless plating solution, the molar concentration of nickel ions in the electroless plating solution is 0.07mol / L, the concentration of dihydrogen phosphate ions is 0.3mol / L, and NH 3 ·H 2 The concentration of O is 0.6mol / L;

[0037] Step 2: Place the glass container containing the electroless plating solution on a heater with a magnetic stirring function to stir at a speed of 1200r / min, while heating to 90°C, and adjusting the pH to 4.0;

[0038] Step 3: Suspend the nickel-based electrode vertically in the electroless plating solution, maintain the stirring speed, temperature and pH of step 2 for 10 minutes, and obtain a nickel-based electrode with a coating on the surface.

Embodiment 3

[0040] Step 1: Add a certain amount of deionized water to the glass container, add NiCl 2 、KH 2 PO 4 and NH 4 Cl, stir evenly at a speed of 2000r / min to obtain an electroless plating solution, the molar concentration of nickel ions in the electroless plating solution is 0.06mol / L, the concentration of dihydrogen phosphate ions is 0.4mol / L, NH 4 The concentration of Cl is 0.8mol / L;

[0041] Step 2: Place the glass container containing the electroless plating solution on a heater with a magnetic stirring function to stir at a speed of 1800r / min, while heating to 95°C, and adjusting the pH to 5.0;

[0042] Step 3: Suspend the nickel-based electrode vertically in the electroless plating solution, maintain the stirring speed, temperature and pH of step 2 for 20 minutes, and obtain a nickel-based electrode with a coating on the surface.

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Abstract

The invention discloses a method for optimizing the anticorrosion performance of a nickel-based electrode, which belongs to the technical field of electrode performance optimization. The nickel ions and phosphorus ions in the electroless plating solution are deposited on the surface of the nickel-based electrode, and the operating parameters such as the plating deposition time, temperature, and pH are controlled to form a layer of Ni-P alloy coating on the electrode surface. P has good resistance Corrosion performance, so the Ni‑P coating can protect the battery electrode, improve its anticorrosion performance, and slow down its corrosion dissolution rate. The method is easy to operate, and the prepared coating is uniform and dense, has a smooth surface, and is tightly combined with the battery electrode body, effectively slowing down the corrosion and dissolution of the electrode in the operating environment, and playing a role in prolonging the service life and optimizing performance of molten carbonate fuel cells. played an important role.

Description

technical field [0001] The invention belongs to the technical field of electrode performance optimization, and in particular relates to a method for optimizing the anticorrosion performance of a nickel-based electrode. Background technique [0002] As a clean and efficient new power generation technology, fuel cell power generation technology can directly convert the chemical energy stored in fossil fuels into electrical energy, effectively avoiding the energy loss caused by the Carnot heat engine theory during the power generation process of traditional power generation technologies , greatly improving the power generation efficiency. [0003] The current mainstream fuel cells are divided into low-temperature fuel cells such as proton exchange membrane fuel cells (PEMFC), direct methanol fuel cells (DMFC), etc., high-temperature fuel cells such as molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC) )Wait. Low-temperature fuel cells are limited by the catalys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/86H01M4/90
CPCH01M4/8652H01M4/8882H01M4/9041Y02E60/50
Inventor 李昊张瑞云程健卢成壮许世森王保民杨冠军黄华
Owner HUANENG CLEAN ENERGY RES INST