26 Aug '16, 4pm

Silicon-iron composite material for high capacity Li-ion anodes

Silicon-iron composite material for high capacity Li-ion anodes

Silicon-iron composite material for high capacity Li-ion anodes 26 August 2016 Researchers at Japan’s National Institute for Materials Science (NIMS) and Georgia Tech have jointly developed unique Si-iron (Fe) based nanomaterials connected by Ge nanostructures for use as a high-capacity anode material for Li-ion batteries. As described in a paper in the journal Nano Energy, the Si-Fe based new nanostructures showa maximum capacity of about 689 mAh/g—about twice as high as conventional materials—and a long, stable cycle life. Researchers are using various approaches using nanostructured silicon materials to address one of the main challenges to using silicon in a Li-ion battery anode—the considerable volume expansion of up to ≈300% during electrochemical lithiation, leading to cracking and pulverization of the Si, ultimately causing rapid and serious loss of capacity. In ad...

Full article: http://www.greencarcongress.com/2016/08/20160826-fukata.html

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