Why Do Laptops Catch Fire?
I'm sure everyone reading this has at some point read a horror story in the press or seen a report on the news regarding to gadgets like a laptop or mobile phone suddenly overheating and bursting into flames without any warning whatsoever. In many circumstances where this unexpected event has occurred it has resulted in severe damage to property or human life.
Why Do Laptops Catch Fire?
Why Do Laptops Catch Fire?
Why Do Laptops Catch Fire?
Why Do Laptops Catch Fire?
Now it isn't just the users of these items who are concerned about this dangerous side effect but also the manufacturers of the electronic equipMent too. It was only last year that Packard Bell made it into the news due to the fact that they had to recall a number of their laptop Computers due to fire safety concerns of the batteries.
The laptops in question that caught fire all used lithiumbatteries and until recently no one had managed to come up with a reason as to why they should over heat so quickly and catch fire. That is until now. Scientists at Cambridge University in England have now announced that they believe they have found the answer as to why this odd phenoMenon is happening.
They have found that it is all to do with the growth of the metal fibres contained within the lithium batteries. The metal fibres are known as dendrites and it's a case that when lithium batteries are charged up rapidly or repeatedly, small lithium dendrites start to form on the carbon anodes which then causes short circuits. These are then responsible the devices rapidly overheating and thus catching on fire.
The scientists at Cambridge University, whichis one of the worlds leading seats of education used Nuclear Magnetic Resonance Spectroscopy (NMR) to see how the dendrites formed inside of the lithium batteries. This technique is normally used to identify eleMents in molecules.
Thanks to using NMR they can actually take a peek inside of the batteries and see the changes that take place in real time while the battery is being used. Prior to this they relied on things such as theoretical models or optical as well as via scanning electron microscopes to study the dendrites. I know NMR has now represented a major leap forward in this field of study.
Thanks to the research carried out at the University they can see what conditions cause the problem and so manufacturers can start to adDress the problem and produces far safer modelsfor the consumer market.
One of the Professors at Cambridge, Clare Brown, was quoted as saying, "These dead lithium fibres have been a significant impediment to the commercialisation of new generations of higher capacity batteries"
She continued, "safety must be solved before we can get to the next generation of lithium-ion batteries and before we can safely use these batteries in a wider range of transport applications. Now that we can monitor dendrite formation inside batteries, we can identify when they are formed and under what conditions. Our new method should allow researchers to identify which conditions lead to dendrite formation and to rapidly screen potential fixes to prevent the problem. "
Thanks to this research we should now start to see vastly improvedbatteries on the market that are safe to use and will no longer present a possible fire hazard.
To fight a lithium fire actually requires a specialist extinguisher known commonly as an L2 which is designed specifically to tackle such a blaze safely. Metal fires are in actual fact extremely dangerous and notoriously hard to fight.
Any scientific or industrial environment using metals such as lithium or magnesium need to be properly protected with extinguishers such as the L2 or M28. They work by using special applicators and powders designed to safely tackle the metals involved.
In your home you should also ensure you are protected and a standard ABC powder model extinguisher should be sufficient.
Why Do Laptops Catch Fire?