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Lionel Jacques

Inductive charging for electric vehicles to be put to the test in real-world trial in B... - 0 views

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    The "Effizienzhaus-Plus mit Elektromobilität" (Google translation: House-Plus efficiency with electric mobility) project is a German government-backed initiative to build an energy-efficient house that generates more electricity than it consumes. It will see a family of four living in the house located in Berlin for fifteen months, starting in March 2012. Audi, BMW, Daimler, Opel and VW will each get a chance to put their respective electric vehicles to the test with each providing EVs to the house for periods of three months each.
Thijs Versloot

Communicate through the plasma sheath during re-entry - 1 views

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    In order to overcome the communication blackout problem suffered by hypersonic vehicles, a matching approach has been proposed for the first time in this paper. It utilizes a double-positive (DPS) material layer surrounding a hypersonic vehicle antenna to match with the plasma sheath enclosing the vehicle. Or in more easy language, basically one provides an antenna as capacitor, in combination with the plasma sheath (an inductor), they form an electrical circuit which becomes transparent for long wavelength radiation (the communication signal). The reasons is that fluctuations are balanced by the twin system, preventing absorption/reflection of the incoming radiation. Elegant solution, but will only work on long wavelength communication, plus I am not sure whether the antenna needs active control (as the plasma sheath conditions change during the re-entry phase).
Lionel Jacques

IBM looking to put lithium-air batteries on the road - 0 views

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    f existing lithium-ion batteries were scaled up to match the range capacity of gas-powered vehicles, they would be unfeasibly large and heavy. Lithium-air batteries, which have the potential to provide energy densities that rivals traditional gasoline-powered engines, are seen as a possible solution.
Lionel Jacques

IHI Prototypes EV With Wireless Power Feeding System -- Tech-On! - 0 views

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    The prototyped EV equipped with a wireless power feeding system is based on the electric version of Volkswagen's "Golf." IHI Corp announced Nov 22, 2011, that it has added a wireless power receiving function to an electric vehicle (EV) and begun to test it by simulating actual use conditions.
pacome delva

A Battery Made With Paper - 0 views

  • Researchers are reporting that they've made batteries and other energy-storage devices by printing layers of carbon nanotube–based ink atop standard photocopy paper. The result is a highly conductive sheet that can carry a charge and be easily incorporated into a flexible battery. Because of paper's low cost, that could help lower the price of batteries used in electric vehicles, wind farms, and other renewable sources.
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    can we use it for space :-) ?
LeopoldS

breaktrough in supercaps - 2 views

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    is this the breaktrough that we were waiting for?
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    That depends on what application you are thinking of. For circuit board electronics this will allow integration of micro sized supercapacitors to provide operational power. They will have to be fed by external batteries still, but the close proximity allows for better tailored power demands. They also propose tapping into thermal/mechanical energy to charge the supercaps. In the end, they can provide significant specific power (W/kg) but you still need to upscale the production to cover large areas to also gain high specific energy (Wh/kg). This breakthough is for micro sized applications, not for replacement of large scale energy storage (electric vehicles, satellites) going up to kWh. That said, I know of several studies in supercaps at ESA, but they are still qualifying current relatively old commercial solutions.
Thijs Versloot

Hydrogen storage in Graphene Origami nanoboxes - 2 views

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    A total storage of 9.5 wt% H2 could be reached which is above the 7.5wt% set by the DoE for market requirements of hydrogen vehicles. The nanoboxes can be opened and closed using electric fields.
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