Ni MH battery use hydrogen storage alloy
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- Supplier: Whole Win (Beijing) Materials Sci.& Tech. Co. Ltd.
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Product Overview
Description
High power hydrogen storage alloy used for Ni-Mh battery
1. Type
C3A: High power
2. Appearance
Silver gray metal powder, without color change of oxidization and impurities
3. Micro-Crystal Structure
CaCu5 type crystal structure with little second-phase
4. Physical property
The hydrogen storage alloys have various specifications of particle sizes, such as -120 mesh, -150 mesh, -200 mesh and -230 mesh, which could be adjusted according to the demand of customers. -120 mesh and -150 mesh are suitable for dry-producing technology of the electrode of battery, while -200 mesh and -230 mesh are suitable for wet-producing technology.
Spec. | Mass Percent (wt.%) | ||||
-120 mesh | -150 mesh | -200 mesh | -230 mesh | -400 mesh | |
-1 | ≥ 97 | ≤ 25 | |||
-2 | ≥ 97 | ≤ 35 | |||
-5 | ≥ 96 | ≤ 65 | |||
-6 | ≥ 95 | ||||
The bulk density varies as the particle size changes and could be adjusted properly according to the demand of customers.
Spec. | -1 | -2 | -5 | -6 |
Bulk Density (g/cm3) | 3.2~3.7 | 3.0~3.6 | 2.9~3.5 | 2.6~3.2 |
Tap Density (g/cm3) | ≥4.3 | |||
5. Electrochemical Property
Parameter | Test Condition | Standard Requirement |
Discharge Capacity (mAh/g) | 20±5°C, at 60mA/g charge and discharge current | ≥310 |
20±5°C, at 300mA/g charge and discharge current | ≥290 | |
high rate discharge capability | At 5C rate | ≥90% |
At 10C rate | ≥70% | |
Cycle Life (times) | 20±5°C, at 300mA/g charge and discharge current | ≥320 |
6. Packaging, Storage and Suggestions
Packaging: The product is reserved in vacuum aluminum foil bag per 5 kg, and packed in carton per 20 kg.
Storage: It could be kept for one year while the packaging is in good condition. Once the bag is open, please use it within 4 hours. If the bag is open, but it is protected by the charged Argon or Nitrogen, please use it within 24 hours.
Suggestions: Due to the good high rate discharge capability and long cycle life, it is fit for the production of high power batteries.
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