Revised Guideline for Recycle Marking on Li-ion Batteries for the Japanese Market
1. Background
- In Japan, it is required to clear the targeted recycling rate (more than 30% for Li-ion batteries) that is defined by the Recycling Law.
- In the battery recycling process, it is very difficult to separate Tin(Sn) and Phosphorous(P) from useful metals with current technology.
- BAJ has been requested by battery recyclers to include an additional mark for identifying Li-ion batteries that contain over a certain amount of Sn and/or P. Therefore BAJ has decided to introduce the additional mark as a voluntary Guideline.
- In April 2007, BAJ published the Guideline for Recycle Marking (5th edition) reflecting this agreement.
2. How we revised?
[Before]
- Indication of Li-ion battery : Li-ion Mn
Near the three arrow mark, indicating the "Chemical Symbol" of the maximum amount of metal in the positive electrode side of the "Li-ion"
(In the case of Cobalt, indication of "Co" is not required)
[After]
- Indication of Li-ion battery : Li-ion
 
Near the three arrow mark, indicating ":the maximum amount of metal contained in the positive electrode" and ":the metals which disturb the recycling of main metals" with two numbers.
3. Marking and Calculation Method
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Example: Indicate "Li-ion 00" near the three arrow mark
- 1st Number: Max. amount of metal contained in the positive electrode
- 0: Cobalt
- 1: Manganese
- 2: Nickel
- 2nd Number: metals which disturb recycling main metals
- 0: None
- 1: In case the total "Tin(Sn)" content in the cell(s) is more than 1.0 wt% per battery pack weight
- 2: In case the total "Phosphorous(P)" content in the cell(s) is more than 0.5 wt% per battery pack weight
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