one company's disaster is the industry's lesson: what samsung’s problem can teach battery manufacturers - lithium ion battery manufacturers

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Most smartphone accidents are caused by distracted drivers or pedestrians.
But a mobile phone that suddenly caught fire
Samsung's Galaxy Note 7 has been doing-
Especially when there is a fire in the aircraft cabin, it has uncertainty.
From the public information, it seems that Samsung does not know the actual technical details of the problem, and the outside experts know less.
This uncertainty can cause consumer confidence to waver, which makes it crucial for the industry as a whole to identify and solve problems as soon as possible.
Meanwhile, Samsung warned that in addition to the cost of recalling millions of phones, the disaster could cost the company more than £ 2 billion in the next six months.
However, the scale of this issue may be a unique opportunity to improve battery safety throughout the industry in the future.
If Samsung provides a faulty battery to researchers, it can effectively attract people --
Why did they go wrong, the source works.
This will provide a lot
A deep understanding of how to improve the battery and its manufacturing is needed.
Both in industry and academia, scientists and engineers in the field of battery research are facing a closely related problem.
Research on battery safety is more important than ever, but it is difficult to find a battery that is actually faulty.
You can artificially introduce obstacles on the model line, but you're just investigating a self.
This limits our potential to learn new courses.
The recall of Note 7 may provide researchers with a large number of potentially faulty batteries.
Samsung has millions of recalled phones that can turn corporate and environmental nightmares into the benefits of scientific research by launching a global crowd --
Purchasing Alliance for hundreds of academic battery labs.
What is the problem? One big problem is what's wrong with the Note 7 battery.
Sony previously recalled the faulty battery on a large scale in 2006 because a small amount of metal particles remained in the battery during the manufacturing process.
When the battery is charged and discharged or placed under mechanical pressure, these particles result in the growth of a small metal lithium tree known as a branch crystal in one of the electrodes.
They eventually penetrate another electrode of the battery, causing a short circuit.
They then heat like wires in conventional bulbs, ignite flammable electrolyte in batteries and consume oxygen in positive materials.
No one knows if there has been a similar problem with the Note 7 battery.
Today's battery technology has evolved, putting more energy into the same space than it did in 2006.
Modern batteries are manufactured using advanced manufacturing techniques that coat a thin layer of powerful active electrode material on aluminum foil and copper foil.
Metal particles causing problems in 2006-
Large rocks related to the tiny structures in today's batteries can cause modern batteries to fail before leaving the factory.
But the Note 7 battery problem may be caused by smaller dust.
Types of particles, small gaps in electrode materials, or just manufacturing inconsistency.
Improve manufacturing of all lithium ion batteries
Known as the "Formation" process after mechanical manufacturing.
This includes charging and discharging them at a fixed number of times in a way that forms an internal protective layer and allows any side
A reaction that occurs in a controlled manner.
The battery that shows any violation will be recycled.
But this process can't. yet)
Detect symptoms that may lead to future failure.
Only by making thousands of units will we know the problem.
But Samsung's problem gives us the opportunity to look deeper into the battery failure.
This will enable us to improve future manufacturing technologies and defect detection.
By agreeing with the company on a series of diagnostic methods, scientists around the world can find out what is wrong with defective cells.
They can also find the way to the problem cell before the problem cell is dangerous to heat up, and repair the production process accordingly, and introduce new post-
Production inspection.
The biggest problem may be that Samsung protects its own intellectual property, which may explain why Samsung did not test the Note 7 battery externally. Although it is considered good practice in the industry.
However, the risk of disclosing some company secrets causing company damage can be said to be much smaller than the risk of battery failure causing consumer confidence in any future model.
Harry Horst is the director of Lancaster energy College and a professor of physical chemistry at the University of Atlanta.