Samsung reports on Galaxy Note 7 fires
2017; American Chemical Society; Volume: 95; Issue: 5 Linguagem: Inglês
10.1021/cen-09505-notw9
ISSN2474-7408
Autores ResumoSamsung's investigation into the batteries of its Galaxy Note 7 phones has uncovered several manufacturing defects that likely contributed to the rash of phone fires customers experienced after the phone's launch last year. Common causes of battery fires include a short circuit across the battery separator, a porous polyethylene film that is supposed to prevent battery electrodes from touching. Batteries can also overcharge or experience a chemical breakdown of their flammable carbonate-based electrolytes. Last week, Samsung disclosed results of analysis by two independent investigators: the testing firm Underwriters Laboratories (UL) and the engineering consulting firm Exponent. The firms tested batteries made by two batteries suppliers, dubbed in their presentations as "Company A" and Company B." The suppliers are believed to be Samsung SDI and Amperex Technology. UL performed a teardown analysis of damaged Note 7 phones and did a failure analysis of hundreds of pristine batteries. It found the damaged
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