Aluminum Foil Coated With Sodium Nickel Iron Manganese Oxide Electrode

pa_aluminum-film-pack

Standard packaging: 5 pieces/pack (Single or double-sided coating).

Single-sided coating main parameters:

Item	Parameter
Electrode size	241mm L * 200mm W
Coating area size	241mm L * 175mm W (Leave 12.5mm of blank space at both ends)
Coating surface	Single-sided coating (rolled)
Current collector thickness	16μm
Coating surface density	14.5 ± 0.2 mg/cm²
Current collector surface density	4.22 mg/cm²
Active material mass ratio	95.5%
Half-cell voltage platform	2.0 – 4.0 V
Reference gram-to-gram capacity	120 mAh/g (0.1c)
Compacted density	2.6 ± 0.1 g/cm³
Other matters	1. The proportion of active substances in the electrode shall be based on the physical label. The calculation formula of active substances in the electrode is below. 2. After opening the electrode, make sure to seal it. You can store it in a glove box or a 45℃ vacuum oven. 3. The electrode is easy to absorb water. Try to avoid contact with air and moisture.

Reference for single-sided pole piece use: (Coin cell battery production reference)

Electrode cutting: Electrode cutting machine. Recommended size of electrode sheet: diameter 12mm/14mm)
Electrode weighing: balance
1. Formula for calculating active substances: Active substance mass = (pole mass (mg)-disc area (cm²) * current collector surface density (mg/cm²)) * active substance ratio
Electrode baking: vacuum drying oven
1. Temperature: 60-80°C
2. Time: 2-4 hours
Electrode assembly: glove box, small hydraulic button battery sealing machine
1. Recommended battery assembly sequence: negative electrode shell-sodium sheet-electrolyte-diaphragm-electrolyte-pole sheet-gasket-shrapnel-positive electrode shell
Battery testing: 5V10mA8-channel battery tester
1. Calculate the mass of active substances, input corresponding current size and voltage range.
2. Current calculation: 0.1C=1C (active substance mass mg * 0.001 * nominal specific capacity mAh/g) * 0.1

Item	Parameter
Electrode size	241mm L * 200mm W
Coating area size	241mm L * 175mm W (12.5mm left blank on both sides)
Coating surface	Double-sided coating
Substrate thickness	16μm
Coating surface porosity	29 ± 0. 4mg/cm²
Foil surface density	4.22 mg/cm²
Pressing density	2.8 ± 0. 1g/cm³
Active material mass ratio	95.5%
All-electric reference specific capacity	110 mAh/g
All-electric reference voltage platform	1.5 – 4. 0 V
Active material mass calculation	Coating surface density * Active material ratio * Pole size
Precautions	After opening the pole, please seal it for storage. It can be stored in a 60℃ oven or glove box.

Double-sided pole piece soft package process reference

Process flow	Reference parameters
Battery capacity setting	Capacity per gram * Area of a single piece * Density of coating surface * Ratio of active material
Pole piece punching	Punch positive and negative electrodes of fixed size
pole piece lamination	Stack the electrodes according to the designed number of layers
Hot Pressure and Micro Short Circuit Testing	Hot pressing time 2min Temperature 45℃
Lug welding	Weld aluminum tabs to the positive electrode and nickel tabs to the negative electrode
Aluminum plastic film molding	Punch holes of appropriate depth and fixed size of aluminum-plastic film
Cell top and side seal	Pretreatment of soft-pack batteries
Battery core baking	Temperature 80℃, time 12 hours
Battery core injection	Inject a certain amount of electrolyte
Vacuum pre-sealing	Pre-seal the soft-pack batteries
Internal resistance test	Test battery voltage and internal resistance
Battery aging	Temperature 45℃, time 12 hours
battery formation	Small current formation
Battery aging test	Temperature 45℃, time 12 hours
Battery final seal	Extract gas from the battery and seal it in vacuum
Internal resistance test	Test voltage and internal resistance
Battery capacity division	Determine capacity