A presentation made by Belgian researchers at Electric Vehicle Symposium (EVS) 27 in Barcelona might irk fans of battery-driven EVs. A new study found that the numbers prove fuel cell hybrid electric vehicle (FCHEV) powertrains partnered with supercapacitors have better fuel economy than powertrains that blend a fuel cell and a battery.
In the coming decades, hybrids, and maybe even all-electric vehicles, may cruise without batteries. Instead, the energy in these vehicles of the future will be stored in a supercapacitor which could be recharged in minutes, possibly seconds. We've heard of the potential of supercaps (and ultracapacitors) before, but researchers have just announced they've overcome an obstacle to this device development. In the lab, they have developed supercaps with an energy density equivalent to that found in
Like Indiana Jones and some sort of Ark or Tomb or Crystal Skull, today's automotive engineers are always looking for better ways to capture, store and release electrical energy for future hybrids and EVs. Green Car Congress says that GM is "actively exploring" at combining supercapacitors with li-ion batteries for the next generation of E-Flex vehicles (read: don't expect in the 2010 Volt). Speaking at the Advanced Automotive Battery Conference (AABC) this week in Tampa, Forida, GM's Mark Verbr
While batteries make most of the headlines when it comes to the energy storage requirements of electric cars, the capacitor could be an exciting and viable alternative. Unlike batteries, which store chemical energy and make it available for use as electrical energy, capacitors store energy in the electric field between a pair of conductors. Supercapacitors, or ultracapacitors, are currently being developed which could rival batteries in the amount of energy that they can store. Whether capacitor
Readers who are familiar with hybrid and electric vehicle drivetrains will already know what a capacitor is, but here is a brief explanation. A battery is a chemical means of storing electricity, while a capacitor is a mechanical means of storing electricity. Both can be recharged, and both can be discharged. One reason to choose a capacitor over a battery is that the mechanical capacitor can generally charge and discharge its electrical energy much more quickly than the chemical battery can. Al