![Microcapsules rupture and fill cracks with a conductive material. (Image: University of Illinois) microcapsules_qg3cxw.jpg](http://res.cloudinary.com/engineering-com/image/upload/w_640,h_640,c_limit,q_auto,f_auto/microcapsules_qg3cxw.jpg)
Forget about building a better mousetrap; make a better battery and you expand the possibilities for renewable energy and cleaner vehicles. Let's see what's happening on the front lines of battery research. Battery, Heal Thyself Li-ion is becoming the standard technology for rechargeable batteries, but it's not devoid of shortcomings. These batteries often employ a carbon-based negative electrode. Silicon electrodes would provide a higher energy density (energy per unit of volume), making th...
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