The role of battery aluminum foil in the battery

Positive electrode current collector <br> lithium ion battery 2 is different can be inserted reversibly and deintercalating lithium ions, lithium compound, respectively as a positive electrode and the negative electrode of the battery of the secondary battery system. During charging, lithium ions are removed from the crystal lattice of the positive electrode material, inserted into the crystal lattice of the negative electrode material after passing through the electrolyte, so that the negative electrode is rich in lithium and the positive electrode is depleted in lithium; during discharge, lithium ions are removed from the crystal lattice of the negative electrode material, after passing through After the electrolyte is inserted into the crystal lattice of the positive electrode material, the positive electrode is rich in lithium and the negative electrode is depleted in lithium. Thus, the difference between the positive and negative materials in the insertion and extraction of lithium ions with respect to the potential of the metal lithium is the operating voltage of the battery.
Lithium battery cathode material <br> Lithium-ion battery is a new generation of green high-energy battery with excellent performance, which has become one of the key points of high-tech development. Lithium-ion batteries have the following characteristics: high voltage, high capacity, low consumption, no memory effect, no pollution, small volume, small internal resistance, less self-discharge, and more cycles. Due to the above characteristics, lithium-ion batteries have been applied to many civil and military fields such as mobile phones, notebook computers, video cameras, and digital cameras.
The main constituent materials of the lithium ion battery include an electrolyte, a separator, a positive and a negative material, and the like. The positive electrode material occupies a large proportion (the mass ratio of the positive and negative materials is 3:1 to 4:1), because the performance of the positive electrode material directly affects the performance of the lithium ion battery, and the cost directly determines the battery cost.
New lithium battery positive electrode material drying and firing techniques <br> dried using a microwave drying technology lithium battery cathode material, to solve the conventional positive electrode material for lithium long drying technology, liquidity slow and uneven drying, and dried enough depth The specific characteristics of the problem are:

1. Using lithium battery cathode material microwave drying equipment, fast and fast, can complete deep drying in a few minutes, the final water content can reach more than one thousandth
2. The cathode material of the lithium battery is dried by microwave, and the drying is uniform, and the dry quality of the product is good.
3. Microwave drying lithium battery cathode material, which is energy efficient, safe and environmentally friendly.
4. The microwave positive electrode material is dried by microwave, and it has no thermal inertia, and the instantness of heating is easy to control.

The application of electrocoating has enabled thin film printing batteries to emerge. Conductive coatings have introduced nanotechnology into battery products, which plays a key role in the development of lithium batteries. In the field of high-speed mobile computing, lithium batteries undoubtedly play a very important role. At present, the demand for energy-saving tools is growing rapidly, and the rational use of energy, that is, the demand for energy conservation is becoming more and more urgent. In this context, the field of conductive coatings and the market is bound to become more important and more potential.
The electrocoating improves electrical contact, thereby reducing internal resistance, increasing magnification, improving discharge efficiency, and extending cycle life. The function of the coating is just like the conductive gasket embedded in the battery, ensuring a "hermetic" electrical connection to the interface. In addition, the coating provides a solid chemical barrier to the battery, protects the battery from oxidation or chemical attack, and eliminates self-discharge, heat and leakage, and extends the energy device. The service life. With the application of the conductive coating in the battery, the battery product not only retains good electrical conductivity, but also selects a lighter, uncoated metal as a raw material for battery production, so that the weight and price of the battery product are greatly reduced.
Lithium batteries carbon coated aluminum foil using a <br> described, the aluminum foil was coated carbon material described by the conductive carbon-based composite slurry with high purity electronic aluminum foil, made for transfer-coating process.
Second, the scope of application

• Power type lithium battery with fine particle active material
• Lithium iron phosphate
• The positive electrode is a fine particle ternary/lithium manganate
• Used for supercapacitors, lithium primary batteries (lithium, lithium manganese, lithium iron, button, etc.) instead of etched aluminum foil

Third, the performance of the battery / capacitor

• Suppress battery polarization, reduce thermal effects, and improve rate performance;
• Reduce the internal resistance of the battery and significantly reduce the dynamic internal resistance increase of the cycle;
• Improve consistency and increase battery cycle life;
• Improve the adhesion of the active material to the current collector, and reduce the manufacturing cost of the pole piece;
• Protecting the current collector from corrosion by the electrolyte;
• Improve the high and low temperature performance of lithium iron phosphate battery and improve the processing performance of lithium iron phosphate and lithium titanate materials.