Commercial 6.8 Ah lithium-ion cells with different ageing/status have been abused by external heating in an oven. Prior to the abuse test, selected cells were aged either by C/2 cycling up to 300 cycles or stored at 60 °C. Gas emissions were measured by FTIR and three separate vents were identified, two well before the thermal runaway while the third occurred simultaneously with the thermal runaway releasing heavy smoke and gas. Emissions of toxic carbon monoxide (CO), hydrogen fluoride (HF) and phosphorous oxyfluoride (POF₃) were detected in the third vent, regardless if there was a fire or not. All abused cells went into thermal runaway and emitted smoke and gas, the working cells also released flames as well as sparks. The dead cells were however less reactive but still underwent thermal runaway. For about half of the working cells, for all levels of cycle ageing, ignition of the accumulated battery released gases occurred about 15 s after the thermal runaway resulting in a gas explosion. The thermal runaway temperature, about 190 °C, varied somewhat for the different cell ageing/status where a weak local minimum was found for cells cycled between 100 and 200 times.

具有不同老化/状态的商业6.8 Ah锂离子电池已被烤箱中的外部加热所滥用。在滥用测试之前，通过C / 2循环老化细胞最多300个循环，或将其储存在60°C下。通过FTIR测量了气体排放，并确定了三个独立的通风口，其中两个排在热失控之前很远，而第三个与热失控同时发生，释放出大量的烟雾和气体。排放有毒的一氧化碳（CO），氟化氢（HF）和氟氧化磷（POF ₃），无论是否发生火灾，都在第三个通风孔中检测到。所有被滥用的牢房都进入了热失控状态，并散发了烟雾和气体，工作牢房还释放了火焰和火花。然而，死细胞的反应性较差，但仍遭受热失控。对于大约一半的工作单元，在所有级别的循环老化中，在热失控后约15 s发生累积的电池释放气体着火，导致气体爆炸。热失控温度（约190°C）因不同的细胞老化/状态而有所不同，其中在100至200次循环之间发现较弱的局部最小值。