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Cover Feature: Insights Into Thermal Runaway of Li–Ion Cells by Accelerating Rate Calorimetry Coupled with External Sensors and Online Gas Analysis (Batteries & Supercaps 7/2021)
Author(s) -
AbdElLatif Abdelaziz A.,
Sichler Peter,
Kasper Michael,
Waldmann Thomas,
WohlfahrtMehrens Margret
Publication year - 2021
Publication title -
batteries and supercaps
Language(s) - English
Resource type - Journals
ISSN - 2566-6223
DOI - 10.1002/batt.202100122
Subject(s) - thermal runaway , calorimetry , ion , mass spectrometry , cover (algebra) , thermal , analytical chemistry (journal) , cathode , feature (linguistics) , evolved gas analysis , chemistry , thermal analysis , nuclear engineering , materials science , physics , thermodynamics , chromatography , mechanical engineering , engineering , organic chemistry , power (physics) , linguistics , philosophy , battery (electricity)
The Cover Feature illustrates the operando analysis of gas evolving from an 18650‐type Li‐ion cell after provoked venting. This measurement became possible by coupling of accelerated rate calorimetry (ARC) to cause venting and thermal runaway of Li‐ion cells intentionally and gas analysis by mass spectrometry (MS). The molecules in the evolved gas are ionized and separated by their mass in a quadrupole analyzer and finally detected as a function of measurement time. This new method (ARC‐MS) allowed insights into the thermal runaway behavior of overcharged, aged, and un‐aged commercial 18650‐type cells. More information can be found in the Article by T. Waldmann and co‐workers.