Samsung Almost Doubles Li-Ion Battery Capacity – in the Near Future

Dean Sigler Electric Powerplants, Sustainable Aviation 0 Comments

Several sources report on Samsung’s announcement that they have developed a new technology that enables them to coat silicon battery cathodes with high crystal graphene, virtually doubling the capacity of lithium-ion batteries. Of course, Samsung relates this immediately to their popular smartphones and tablets, but the significance of this is not lost on electric vehicle designers.  Doubling the range of EVs “without adding a single pound of weight” would be a true game changer.  But don’t get excited too quickly. Silicon electrodes have been a major research effort for people like Dr. Yi Cui, who spoke at this year’s Electric Aircraft Symposium.  Issue surrounding their successful use have included silicon’s expansion when being charged and contraction when being discharged.  This …

Dipping and Coating for Better Batteries

Dean Sigler Electric Powerplants, Sustainable Aviation 1 Comment

Could dipping electrodes in a secret sauce improve supercapacitor and battery endurance and power?  Could coating cell internals be the flavor of the month?  These recipes for better batteries may improve things at a better than normal rate, if California researchers have anything to say about it. Working with his compatriot Dr. Jaephil Cho in South Korean, Dr. Cui of Stanford University has been a leader in developing improved battery technology, even developing a painted paper battery.  In an appearance at the 2009 Electric Aircraft Symposium, Cui explained a basic truth of battery development – that improvements generally created about eight percent greater power or endurance in cells every year, leading to a doubling of battery capabilities every seven and one-half …