Bulletproof batteries (Day 259)

Lithium batteriesLithium ion batteries are used as high density power sources for a range of devices from mobile phones (see my blog ‘The next generation of ultra-fast charging batteries‘) to electric vehicles.

But the use of lithium batteries hasn’t been without some issues. For example, in 2013 Boeing was forced to ground its entire 787 Dreamliner fleet after problems were detected with the lithium ion batteries in the plane’s electrical system.  The batteries reportedly burst into flames under some conditions – not a good state of affairs at 43,000 feet!

This safety issue obviously requires addressing, so researchers at the University of Michigan (U-M), US, have been working to develop an advanced type of barrier between the electrodes in a lithium-ion battery.

Continue reading Bulletproof batteries (Day 259)

Tour de Engineers? (Day 38)

Tour de France
Image by Sergii Rudiuk / Shutterstock.com

The Tour de France sets off tomorrow for its 101st edition and over the duration of 23 days will see 198 riders from 22 teams attempt to complete 21 stages and cover a total distance of 3,664 kilometres or 2,276 miles.

If you’re a member of the Team Sky nine-man team you’ll probably be sitting on a carbon fibre bike worth £12,000 (USD $20,000). Also, most of the field will be using a Kevlar-based helmet ranging from £120 (USD $200) and upwards.

Continue reading Tour de Engineers? (Day 38)