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Battery makers use nanoporous polyethylene as a separator in lithium-ion batteries. A team of researchers at Stanford University may now have a strategy for keeping us cool with the nanoporous fabric. The clothing could help our bodies cool themselves by allowing body heat to escape (Science 2016, DOI:10.1126/science.aaf5471). The researchers think that clothing made from such fabric could reduce energy use for air conditioning by allowing IR radiation to pass through. Basically, they were looking for a material that was transparent to mid-IR radiation and the battery separator nanoporous polyethylene fit the bill.

An unintended consequence of lithium-ion battery development that could help keep us cool and save on A/C use!

http://www.scientificamerican.com/article/new-material-makes-coolest-clothing-around/

http://www.eenews.net/stories/1060042298

http://www.latimes.com/science/sciencenow/la-sci-sn-cool-shirt-20160901-snap-story.html
 

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Cotton is horrible in the heat. My favorite is Merino wool spun onto nylon. Would be interesting to see how this new fabric compared to that or, for that matter, some fabrics that claim to lower the temperature next to the skin by 4F. The one big miss in the properties test was how smelly it gets when you sweat! (You may have figured out this is an area of interest for me -- I hike a lot. LOL)
 

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Eventually, we will have full body suits that protect, cool, heat, etc. like the movies. Enhanced strength and bio-monitoring included. All possible now.
 
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