http://www.chalmers.se/en/departments/chem/news/Pages/Liquid-storage-of-solar-energy-%E2%80%93-more-effective-than-ev...

http://www.chalmers.se/en/departments/chem/news/Pages/Liquid-storage-of-solar-energy-%E2%80%93-more-effective-than-ever-before.aspx
http://www.chalmers.se/en/departments/chem/news/Pages/Liquid-storage-of-solar-energy-%E2%80%93-more-effective-than-ever-before.aspx