Novel estimation method of operating life in lithium-ion pouch cells
| Autor: | Ilbok Lee, Keebum Hwang, Nayeong Kim, Songhun Yoon, Hyosung Kim, Joongho Bae, Jaekwang Kim |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering chemistry.chemical_element 02 engineering and technology Test method Operating life Pulsed power 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Anode Ion chemistry Lithium Composite material Pouch 0210 nano-technology Capacity loss |
| Zdroj: | Journal of Industrial and Engineering Chemistry. 67:266-275 |
| ISSN: | 1226-086X |
| Popis: | Herein, a novel operating life (OL) test method was evaluated with 200 mAh pouch-type lithium-ion batteries. By combining the calendar life (CL) test with intermediate pulse power cycling, more realistic life prediction was possible, which encompassed real operation of batteries accompanying with thermal acceleration. Larger capacity decrease and resistance increase of pouch cell were observed in the OL test, which was well explained using the SEI film growth model. After dissemble of pouch cell, capacity loss and resistance increase mostly occurred within anode, reflecting that SEI film growth on anode surface was highly attributable to cell degradation. |
| Databáze: | OpenAIRE |
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