Meaning
Mass spectrometry systems measure the transient release of volatile chemical compounds from a battery cell during electrochemical cycles. This real-time analysis, known as oems gas evolution, tracks the degradation of electrolytes and electrodes by identifying the precise masses of escaping gases. It defines the voltage and temperature boundaries beyond which the cell components decompose.
Reaction Monitoring
High-voltage operation can drive the oxidation of organic carbonate solvents on the cathode surface. By using oems gas evolution measurements, research teams can pinpoint the onset potential where carbon dioxide and carbon monoxide begin to form. This information reveals the instability of the electrolyte before any visible swelling occurs in the cell.
It allows for the rapid screening of protective additives that can suppress these side reactions.
Degradation Tracking
Secondary reactions during battery cycling often produce flammable gases such as hydrogen and ethylene. By linking oems gas evolution to specific states of charge, engineers can determine if these gases stem from anode reduction or cathode oxidation. This tracking helps identify which electrode is responsible for the pressure buildup inside a sealed pouch cell.
It provides essential data needed to optimize cell venting and pack safety systems.
Sourcing Sieve
Sourcing teams rely on electrochemical gas analysis to benchmark the safety profiles of different cell designs before starting volume purchases. A cell that exhibits minimal oems gas evolution during high-temperature storage indicates a more stable chemical formulation. This thermal stability reduces the risk of cell swelling and pack-level gas release in electric vehicle applications.
Consequently, these metrics help buyers choose cells that meet strict international transport and operation safety standards.
