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Matsushita develops 'safer' laptop batteries with HRL

Posted: 21 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Panasonic? Matsushita? laptop battery? laptop batteries? Li-ion battery?

To avoid further incidents of overheating and burning laptop batteries, Matsushita Battery Industrial Co. Ltd (MBI) is readying to mass-produce 'safer' Li-ion batteries by employing heat resistance layer (HRL) technology.

According to MBI, the HRLconsisting of an insulating metal oxide on the surface of the electrodescan cease short circuits. When a separator is pierced by an electrically conductive material such as a metal particle, a short circuit develops, causing the battery to overheat and at the worst, catch fire, MBI explained. Aside from the thin polyolefin separator used in most batteries, MBI added the HRL in their products to better insulate the cathode from the anode layer.

To further prevent Li-ion batteries from contamination with electrically conductive materials, MBI said it has eliminated foreign substances from battery materials, and has adopted stronger separators and thermally stable materials. Likewise, the division ensured a clean environment in their battery factory.

The company began shipping the industry's 'first' 2.9 Ah high capacity batteries last April.

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