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Part 1 focuses on the safety tests with large lithium-ion cells. We explain our test method and equipment to trigger and characterize a thermal runaway (TR). Then we present a case study with a large pouch cell which is brought into TR by over-temperature. We discuss the temperature curves, the voltage/resistance curves, gas releases and gas compositions.
Part 2 covers composition analysis of large lithium-ion cells to interpret what happened during high temperature test. We also conduct thermal stability analysis of charged electrode to know the temperature when exothermic decomposition and oxygen release from cathode start. From that information, we can obtain key parameters to control thermal runaway from material design point of view.
This webinar will focus on the following key topics:
• Methods for safety tests of large lithium-ion cells
• Thermal runaway of a large pouch cell caused by over-temperature
• Detailed analysis of the gas, which is released during thermal runaway
• Composition analysis of large scale lithium-ion cells
• Thermal stability of charged electrode
Presenters
Yasuhito Aoki – Researcher at Toray Research Center
Christiane Essl – Researcher at Virtual Vehicle Research GmbH
Andrey Golubkov – Researcher at Virtual Vehicle Research GmbH
Yasuhito Aoki is a researcher at Toray Research Center. He has been working on material analysis of Lithium ion battery using various instrumental analysis (mainly, Raman, FT-IR spectroscopy).
Christiane Essl is a researcher at the Virtual Vehicle Research GmbH and an external PhD student at AUDI AG. She works on Battery Safety with the focus on vent gas analysis and early battery failure detection.
Andrey Golubkov is a researcher at Virtual Vehicle Research GmbH. He has been working on thermal runaway testing of automotive Li-ion cells for 10 years.
Toray Research Center and Virtual Vehicle Research GmbH are proud sponsors of this event.
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