Download or read book Ion Beam-Mixed Germanium and Silicon Lithium Ion Battery Anodes written by Nicholas Vito and published by . This book was released on 2013 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lithium ion batteries have now become a ubiquitous part of modern society as an energy storage device. Attractive due to the high energy density compared to competing battery technologies, interest in improving performance and lowering cost is high as the interest in electric vehicles increases. Improvements in the cathode, electrolyte, and anode chemistries must all take place to realize the full improvements of any one component. Germanium (1,637 mA h g-1) and silicon (4,200 mA h g-1) anode materials have received attention due to their high theoretical gravimetric capacities compared to the common carbon (372 mA h g-1) anode. One major drawback of germanium and silicon electrodes is that to realize its full capacity, the electrode undergoes a volumetric expansion of up to 400%. This expansion will lead to premature failure of the battery due to loss of electrical contact and pulverization.