28 Nov '13, 2pm

Power Week-in-Review: Self-Healing Battery, Personal Hydroelectric Generator & Li-ion Forecast | EE Times

Power Week-in-Review: Self-Healing Battery, Personal Hydroelectric Generator & Li-ion Forecast | EE Times

Scientists at Stanford University and the Department of Energy's SLAC National Accelerator Laboratory have created a self-healing battery electrode , which could help pave the way toward more robust high-capacity batteries for electric vehicles and portable electronics. The electrode was made by combining silicon microparticles -- a promising, but fragile, high-capacity battery material -- with self-healing polymers that seal the cracks that typically form when a battery is used and recharged (see figure and video below). The electrode has eight times the storage capacity of conventional lithium battery carbon anodes and can currently withstand 100 charging cycles - 10 times that of previous silicon batteries. Cracks formed in a self-healing silicon electrode due to swelling during charging (top) begin to seal back up within hours (bottom). (Source: C. Wang et al, Nature C...

Full article: http://www.eetimes.com/document.asp?doc_id=1320252&piddl_...

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