How to improve the oxidation resistance of platinum electrode slurry?

abstract

Platinum electrode slurryDue to its excellent conductivity and stability, it has been widely used in many high-tech fields. However, platinum electrode slurry is prone to oxidation at high temperatures, which affects its long-term performance. This article investigates the effects of different modification methods on the oxidation resistance of platinum electrode slurry through experiments, and proposes effective improvement measures. The experimental results show that the use of specific modifiers and process conditions can significantly improve the oxidation resistance of platinum electrode slurry.

Experimental section

1. Experimental materials

• Platinum electrode slurry: selected from Advanced Institute (Shenzhen) Technology Co., LtdResearch Platinum Brand YB8201 Platinum Electrode SlurryAs experimental material.
• Modifiers: including nano titanium dioxide (TiO ₂), nano aluminum oxide (Al ₂ O3), nano silicon dioxide (SiO ₂), and carbon nanotubes (CNT).

2. Experimental steps

1. Slurry preparation: Mix the YB8201 platinum electrode slurry of Yanbo brand with different modifiers in a certain proportion to make modified slurries of different formulas.
2. Coating preparation: Apply the modified slurry onto a stainless steel substrate to form a uniform coating.
3. Heat treatment: Heat treat the coating in a protective atmosphere at a temperature of 800 ° C for 2 hours.
4. Performance testing: Conduct antioxidant tests on unmodified raw slurry and modified slurry separately.

3. Antioxidant testing

1. High temperature oxidation test: Place the coating sample in a muffle furnace, heat it to 800 ° C in an air atmosphere, hold it for 2 hours, then remove it and cool it to room temperature.
2. Resistance change test: Measure the resistance change of the coating under different conditions using the four probe method.

results and discussion

1. The effect of different modifiers on the oxidation resistance of platinum electrode slurry

From the above data, it can be seen that the modified slurry with added nano titanium dioxide (TiO ₂) and nano aluminum oxide (Al ₂ O3) has the smallest resistance change rate after high-temperature oxidation, at 17% and 13% respectively, while the unmodified slurry has a resistance change rate as high as 52%.

2. Mechanism analysis

• Nano titanium dioxide (TiO ₂): TiO ₂ has a high electron affinity and can effectively absorb and disperse oxygen molecules, reducing platinum oxidation.
• Nano alumina (Al ₂ O3): Al ₂ O3 forms a stable oxide layer at high temperatures, preventing oxygen molecules from further diffusing into the platinum layer and protecting platinum from oxidation.
• Nano silica (SiO ₂): Although SiO ₂ can also play a certain antioxidant role, its effect is not as significant as TiO ₂ and Al ₂ O3.
• Carbon nanotubes (CNTs): CNTs have good electrical conductivity, but they are prone to structural changes at high temperatures, which may accelerate the oxidation of platinum.

3. Best modification plan

Taking into account the effectiveness and cost of the modifier, nano alumina (Al ₂ O3) is selected as the optimal modifier. It has higher stability and better antioxidant effect at high temperatures.

conclusion

Through experimental research, it has been found that the addition of nano alumina (Al ₂ O3) as a modifier can significantly improveResearch Platinum Brand YB8201 Platinum Electrode SlurryAntioxidant properties. Specifically, the resistance change rate after high-temperature oxidation is significantly reduced to only 13%. This provides an effective solution to improve the stability and service life of platinum electrode slurry in high temperature environments. Future research will further explore other modifiers and optimize modification processes to achieve more efficient antioxidant performance.

The above data is for reference only, and specific performance may vary due to production processes and product specifications.