WHAT is Pre-Lithiation Technology?
Problem:
Consumed lithium during cell cycles reduces capacity, cycle life, and energy density.
Solution:
Pre-lithiation supplements consumed lithium ions to enhance cell performance.
- Adding LFO to the LFP cathode mix can extend cycle life.
- During the first charge, 6-15% lithium is lost from the cathode to form SEI on the anode.
- Pre-lithiation replenishes this lost lithium, improving cycle life.
WHAT is the Working Principle of Pre-Lithiation Technology?
Compensation：
Increases active lithium content to compensate for losses during SEI formation in the first cycle.
Sustained Release：
Excess active lithium in the anode is gradually released, enhancing cycle life.
Comparisons between Traditional Lithium Battery Cells and Cells with Pre-Lithiation Technology
Cycle Life at 1C and 0.5C Charge/Discharge：
- Traditional: 70% SOH at 5000 cycles with 1C and at 7000 cycles with 0.5C.
- Pre-lithiated: 70% SOH at 9000 cycles with 1C and at 12000 cycles with 0.5C.
Long-Term Life：
- Traditional: 60% SOH at 10-15 years.
- Pre-llthiated: 62% SOH at 20 years.
Working Conditions：
- Traditional: face life-limited challenges.
- Pre-lithiated: have a full margin, performing better.
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