Serendipity makes a big difference

Sometimes, technology breakthrough needs to wait for serendipity. In the near future, it may be possible to have battery lifespan four times as much as today's Li-on battery; thanks to the fortuitous misstep during the research by a MIT/Tsinghua team.   http://www.economist.com/news/science-and-technology/21660963-nanotechnological-accident-may-lengthen-battery-lives-tiny-balls-fire