Tag: BMW.DE

BMW i3 uses batteries with silicon in the anode

The Race For Silicon Anodes

Graphite is the most widely used material for battery anodes.  The anode is the positively charged electron collector in a battery.  It collects and accelerates the electronics emitted by the battery’s cathode.  Graphite gets the anode job because it is has excellent electric conductivity and resists heat and corrosion.  Plus it is light weight, soft and malleable. As satisfied as manufacturers might be with graphite anodes, none would balk at an alternative material that boosts battery performance or reduces cost.  Scientists believe battery capacity can be increased as much as ten times by using silicon for anodes.  It requires six atoms of carbon to bind one...
demand charge impacts on DC Fast Charger costs

EV Fast Charging Disincentives

by Daryl Roberts DC Fast Chargers (DCFCs) and Tesla superchargers are a key element in electric vehicle (EV) charging infrastructure that could facilitate wider adoption of EVs by enabling recharging that comes to resemble the time currently taken for gas station stops, and thereby reducing “range anxiety” for drivers. However, the pricing structure for electrical costs incurred at commercial DC fast chargers is currently prohibitive, because it includes a special fee called a “demand charge”. Rate design in a number of states includes this additional charge, based on the “peak rate” on electric power consumed in kW. In New York,...