Why Nickel 200 Foil Is a Preferred Material for New Energy and Chemical Industries?

Nickel 200 foil is a type of commercially pure nickel. Its nickel content reaches 99.6% or higher. It has a density of 8.9 g/cm³ and melting point of 1455 ℃. It features good electrical conductivity. Its resistivity stands at about 6.84 μΩ·cm. It delivers strong corrosion resistance in alkaline and reducing media. Annealed Nickel 200 foil has tensile strength from 370 MPa to 420 MPa and elongation above 25%. It offers excellent formability and weldability. It keeps stable performance at high temperature and in vacuum environments. This material works for battery tabs, electrochemical electrodes, electromagnetic shielding and chemical anti-corrosion parts. Nickel 200 foil outperforms titanium foil in conductivity and alkaline resistance. It suits applications requiring steady current transmission.

1 Chemical Composition and Purity Characteristics

1.1 Core Composition of High-purity Nickel

Nickel 200 foil follows standards for commercially pure nickel. Nickel content stays above 99.6%. High purity stabilizes performance in electrochemical work. It cuts interference to electrical conductivity. Standard limits: C ≤ 0.15%, Fe ≤ 0.40%, Mn ≤ 0.35%, Si ≤ 0.35%, S ≤ 0.01%. Strict composition control guarantees reliable service in various working conditions.

1.2 Influence of Impurity Elements

Excess carbon forms carbides at grain boundaries and weakens corrosion resistance. High iron content causes performance degradation in certain chemical media. Even tiny sulfur leads to hot brittleness at high temperatures. Advanced smelting and refining keep these impurities at low levels. It ensures stable performance in harsh environments.

1.3 Purity Matching for Different Applications

Battery production requires high surface cleanliness to prevent side electrochemical reactions. Chemical facilities focus on corrosion stability. Electronic parts demand consistent conductivity. Nickel content above 99.6% meets basic needs for all above fields. We raise purity to 99.9% for ultra-high-purity scenarios. Higher purity brings extra production costs.

2 Practical Value of Physical and Mechanical Properties

2.1 Density and Melting Point

Nickel 200 foil has density 8.9 g/cm³, higher than titanium foil at 4.5 g/cm³. Same thickness means larger mass. Density does not decide shielding performance directly. Conductivity, permeability and thickness play key roles. Its melting point of 1455 ℃ supports structural stability at 600 ℃ to 800 ℃. It works for vacuum heating parts and high-temperature reactor liners.

2.2 Mechanical Differences between Annealed and Cold-worked Material

Annealed (M) Nickel 200 foil has tensile strength 370 ~ 420 MPa and elongation ≥ 25%. It excels at stamping and bending. Cold-worked (Y) material gains tensile strength 500 ~ 600 MPa, with elongation dropping to 10 ~ 15%. It suits parts needing high strength and small deformation. Select proper material state to avoid cracking or springback during processing.

2.3 Combined Electrical and Thermal Performance

Nickel 200 foil has resistivity 6.84 μΩ·cm at 20 ℃. The value is much lower than stainless steel but higher than copper at 1.7 μΩ·cm. Its thermal conductivity reaches 90.7 W/(m·K). Good dual performance dissipates heat effectively at battery tabs. It lowers local overheating risks. This advantage stands out for high-current equipment.

Note: Actual performance changes with working conditions and production processes.

3 Corrosion Performance in Different Media

3.1 Stability in Alkaline Solutions

Nickel 200 foil forms dense passive film in sodium hydroxide and potassium hydroxide. Its corrosion rate stays extremely low. It runs steadily for long cycles in chlor-alkali cells and caustic soda production equipment.

3.2 Adaptability to Reducing and Neutral Media

It works well in hydrogen, ammonia and neutral aqueous solutions. It suits hydrogen equipment, pharmaceutical reactor liners and seawater treatment parts. It has poor resistance to hot nitric acid and concentrated sulfuric acid. Avoid these working scenarios.

3.3 Electrochemical Corrosion and Passivation Behavior

Nickel 200 foil has low passivation potential. It easily forms protective oxide film in electrochemical environments. Its surface stability exceeds ordinary stainless steel for electrolytic and electroplating equipment. Electrode potential changes with electrolyte, pH value and temperature. Run targeted tests for actual working conditions.

4 Machinability and Surface Quality Control

4.1 Thickness Control for Ultra-thin Foil

We produce Nickel 200 foil from 0.03 mm to 0.8 mm. Multi-roll mills and intermediate annealing solve thickness uniformity issues. Precision rolling improves flatness for ultra-thin material. Complete cleaning lines remove oil contamination for follow-up processes.

4.2 Multi-stage Surface Treatment

We use ultrasonic cleaning and alkaline treatment to remove oil and particles. Adopt wettability tests to check surface cleanliness. Continuous annealing under argon prevents oxidation. This process meets standards for electronic-grade material.

4.3 Formability and Work Hardening Control

Cold working causes work hardening and weakens formability. Set annealing temperature at 700 ~ 900 ℃ to restore ductility. Optimized grain structure reduces edge cracks and wrinkling during stamping.

Note: Actual performance depends on cold reduction and production technology.

5 Material Selection for Different Industries

5.1 New Energy Battery Applications

Battery tabs require low resistance, good corrosion resistance and reliable weldability. We select 0.05 ~ 0.15 mm thick Nickel 200 foil. It balances current transmission and weight cost. Copper foil easily corrodes in alkaline batteries. Nickel 200 foil acts as the ideal choice for nickel-metal hydride and nickel-cadmium batteries. Copper foil remains the mainstream for lithium-ion batteries. Nickel 200 foil also works for high-temperature sodium-ion batteries and certain solid-state batteries.

5.2 Chemical and Electrolysis Equipment

Use 0.3 ~ 0.8 mm Nickel 200 foil for anode substrates and protective layers in chlor-alkali cells. It resists combined corrosion from strong alkali and chlorine. It extends equipment maintenance intervals. It also serves as bipolar plates and liner materials for fuel cells and electroplating tanks. It delivers better reliability than composite or coated materials.

5.3 Electronic and Precision Components

Ultra-thin 0.03 ~ 0.1 mm Nickel 200 foil works for radio frequency shielding and microwave parts. It supports precision laser welding for tiny components. Pure nickel has ferromagnetism. Use caution near high-precision sensors and magnetic storage devices. It also acts as structural and conductive material for MEMS and flexible circuits.

Conclusion

Nickel 200 foil relies on 99.6%+ high purity, good conductivity and outstanding alkali resistance. It has wide use in new energy, chemical and electronic industries. Precision rolling and surface treatment guarantee stable quality for foil from 0.03 mm to 0.8 mm. Proper material selection and process control improve production efficiency and cut costs for high-end manufacturing.

FAQ

Contact Us

Baoji Titanium Valley Titanium Nickel Zirconium Material Processing Co., Ltd. is a professional manufacturer of Nickel 200 foil. We have annual output of 3000 tons for ultra-thin wide foil. We provide customized products from 0.03 mm to 1.0 mm. Our products comply with ISO 9001 standards. Send your requirements to sales@titaniumvalleys.com for technical support and quotations.

References

1. Wang Zhenhua. Handbook of Nickel and Nickel Alloys [M]. Beijing: Metallurgical Industry Press, 2015.
2. Li Jingui. Corrosion Control Design Handbook [M]. Beijing: Chemical Industry Press, 2006.
3. Zhang Baohong. Fundamentals of Electrochemical Engineering [M]. Beijing: Chemical Industry Press, 2012.
4. Zhao Yongzhong. New Energy Battery Materials and Technology [M]. Beijing: Science Press, 2019.