Is Li-ion Battery Safety an Oxymoron?
I’m going to deviate from the series I began with my last post to address the timely topic of battery safety. I’ll return to why it’s taking so long to build a better battery next week. Last week Consumer Reports published an online article about Samsung Note 7 smartphones catching fire while charging. Over the Labor Day weekend, major media, including The Wall Street Journal, reported that “Samsung Electronics is
The Enovix 3D cell architecture also provides several safety features not obtainable with a conventional Li-ion battery structure (see illustration below). Safety features of Enovix 3D cell architecture (source: Enovix Corporation) The Enovix cell architecture allows for a ceramic separator that tolerates higher temperatures than the polymeric separator in a conventional Li-ion battery. Excess capacity in the Enovix patented silicon anode reduces risk for lithium metal plating during overcharge conditions.
In a previous post, Li-ion Battery Production, I reported how Sony decided to produce the initial Li-ion battery in the same manner as magnetic audio tape. This was because Sony had a surplus of magnetic tape production equipment and technicians, due to the shift in the market for recorded music from audio cassettes to compact disks. The production method helped deliver a significant initial improvement in performance over the nickel-cadmium
Rob Price’s March 14, 2016 Business Insider article, “Google’s smartwatch king has a 50-year vision for the future of Android Wear,” is crafted from his interview with David Singleton, Google’s director of Android Wear. Singleton’s ambitious vision is that, “”The smartwatch will feed you information before you ask for it, act as your ‘agent’ in the internet-connected world around you, and keep you healthy-even talking to your doctor before you