Product Description
Lithium Ion Battery Positive Electrode Current Collector(Microporous aluminum foil) is a specialized material featuring a controlled network of microscopic pores (typically 1-100μm in diameter) engineered through precision etching, laser drilling, or electrochemical processes. This unique structure combines the inherent benefits of aluminum-lightweight, conductive, and corrosion-resistant-with enhanced functionality for specialized industrial uses.
Material of Lithium Ion Battery Positive Electrode Current Collector
Aluminum Foil: The most commonly used material for the positive electrode current collector is aluminum foil. Aluminum is preferred because:
It is lightweight.
It has good electrical conductivity.
It forms a passive oxide layer that prevents further oxidation, ensuring stability in the battery's operating environment.
It is cost-effective and readily available.
Product Specification
|
Size |
Micropore Index |
Microporous distribution structure |
Decrease In Areal Density |
Properties |
|||||||
|
Width |
Thichness |
Micropore Density |
Micropore Diameter |
Tensile Strength |
Decrease |
Elongation |
Reduction |
resistivity |
Increase |
||
|
200-1000 |
0.01-0.025 |
200-499 |
5-50 |
Full Surface |
0.01-1 |
≥160 |
≥1.15 |
≤43 |
≤3.4 |
≤13 |
|
|
500-799 |
0.01-1.57 |
≥155 |
≤16 |
≥1.05 |
≤48 |
||||||
|
800-1099 |
0.02-2.16 |
≥150 |
≤19 |
≥0.95 |
≤53 |
||||||
|
1100-1399 |
0.02-2.75 |
≥140 |
≤25 |
≥0.85 |
≤58 |
||||||
|
1400-1699 |
0.03-3.33 |
≥130 |
≤30 |
≥0.75 |
≤63 |
||||||
|
1700-1999 |
0.03-3.92 |
≥120 |
≤35 |
≥0.65 |
≤68 |
||||||
|
2000-3000 |
0.04-5.89 |
≥100 |
≤46 |
≥0.5 |
≤75 |
||||||
Types of Lithium Ion Battery Positive Electrode Current Collector
Manufacturing Process
Our production utilizes:
- Photochemical Etching - For precise pore geometry control
- Electrolytic Processing - Enables sub-micron pore accuracy
- QA Protocols - Automated optical inspection ensures ≤2% pore size deviation
Property of Lithium Ion Battery Positive Electrode Current Collector
- Conductivity: The current collector must have high electrical conductivity to minimize energy losses and ensure efficient charge/discharge cycles.
- Corrosion Resistance: It must resist corrosion from the electrolyte and other battery components, especially at high voltages.
- Mechanical Strength: It should be mechanically robust to withstand the stresses during battery assembly and operation.
- Thickness: Typically, aluminum foil used in lithium-ion batteries is around 10–20 micrometers thick, balancing conductivity, weight, and mechanical integrity.
Current Industry Challenges
Lithium-ion batteries dominate the energy storage market today, and enhancing their energy density remains a global research priority. While advancements in cathode and anode materials play a pivotal role, the performance of auxiliary components-such as current collectors, binders, electrolytes, and separators-also significantly impacts overall battery efficiency.
Currently, surface roughening of aluminum foil is a common technique to improve adhesion between the foil and cathode materials. However, this method often fails to deliver consistent results. During cylindrical battery winding or repeated charge-discharge cycles, the cathode material tends to detach from the aluminum foil, leading to high defect rates, reduced cycle life, and rapid capacity fading. This issue is particularly severe in batteries employing ternary cathode materials.
To address this challenge, some international manufacturers have introduced perforated copper and aluminum foils as current collectors. These foils feature uniformly distributed micropores (approximately 95 µm in diameter per hole) across each square centimeter. However, their adoption requires specialized coating equipment, as conventional battery production lines struggle with backside slurry leakage during the coating process-a problem caused by the relatively large pore size.
Our Microporous Aluminum Foil Features
Through-holes: 200-6,000 pores/cm² with diameters ranging from 1-20μm
Blind holes: Dozens to thousands per cm² with diameters of 10-50μm
Surface micro-texturing: Uniformly distributed grooves with:
Depth: 1-3μm
Width: 1-5μm
Length: Hundreds of micrometers
Key Advantages
- 60% stronger adhesion vs. conventional foils
- Zero slurry leakage - maintains coating integrity
- Plug-and-play compatibility with existing production lines
- Universal applicability for single/double-sided coating
Performance Validation
- 15% higher first-cycle efficiency in NMC811 cells
- 18% reduction in DCIR after 500 cycles
- 100% passing rate in nail penetration tests
Test Equipment
Primary Applications
- Energy Storage
Lithium-ion battery electrode substrates (enhanced electrolyte wetting)
Fuel cell diffusion layers
- Filtration Systems
High-temperature particulate filters (automotive/industrial)
Medical sterilization membranes
- Thermal Management
Heat pipe wicking structures
Phase-change material containment
- Advanced Electronics
RF shielding with selective permeability
Capacitor dielectric layers
Contact Us
Lithium Ion Battery Positive Electrode Current Collector is a vital component in lithium-ion batteries, and aluminum foil is the material of choice due to its balance of conductivity, stability, and cost-effectiveness. Ongoing research aims to further optimize its properties for better battery performance and longevity.If you are looking for Lithium Ion Battery Positive Electrode Current Collector, you can contact specialized metal suppliers such as HSMetal who deal with high-performance and high quality products. We can provide material certifications and custom sizes based on your needs.Welcome Inquiry Us!
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