News Articles with Category: Power System Analysis

Drexel's Gogotsi Questions Accuracy of Battery Performance Metrics

November 29, 2011 - via Drexel University In a piece published in the November 18 edition of Science, Gogotsi, who is the head of the A.J. Drexel Nanotechnology Institute, calls for a new, standardized gauge of performance measurement for energy storage devices that are as small as those used in cell phones to as large as those used in the national energy grid.

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Fuel cells rescued by batteries

July 27, 2011 - via Nanowerk News Fuel cells and lithium-ion traction batteries will increasingly be seen working together in driving land, sea and air vehicles.

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How ultracapacitors work (and why they fall short)

July 12, 2011 - via Clean Tech Put simply, ultracapacitors are some of the best devices around for delivering a quick surge of power. Because an ultracapacitor stores energy in an electric field, rather than in a chemical reaction, it can survive hundreds of thousands more charge and discharge cycles than a battery can.

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Why lithium-ion batteries die so young

June 29, 2011 - via Clean Tech Damage from extended exposure to high temperatures and a lot of charging and discharging cycles eventually starts to break down the process of the lithium ions traveling back and forth between electrodes.

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