|Quoting Stitch (Reply 182):|
Independent testing have identified that no significant amount of oxygen is found in cell vent gases. Any internal production of oxygen will affect cell internal reactivity, cell internal temperature, and cell case temperature, but plays no measurable role in the flammability of vent gases.
When you read this statement it is typical as many of the half truth statements are formulated in this battery PR
Why should we find free oxygen in the vent gas?
When the oxygen is already consumed in the reactions inside the battery we would have to look for CO2 and H20 in the vent gas.
There should be neither H2O (there is no water in lithium ion batteries) nor CO2 without a chemical reaction in the cells, and it calls for a semantic expert if you call it fire or not.
The oxygen produced at a thermal runaway in the ion/lithium cells is not enough to burn of all the available fuel in the cell.
And it is astounding how carefully Boeing spokes people are not mentioning what the electrolyte in the battery cells is, and how careful in that connection they do not mention combination of organic solvent and salt or flammable liquid.
If one would take the PR spin completely serious one should get afraid.
But all the same what the public lawyer vetted statements are saying, one knows that Boeing is working to solve this battery problem and will solve it.
The proposed solution shows that the danger of fire and/or explosion is taken seriously.
[Edited 2013-03-16 04:34:09]