ULTRACAPACITORS

Ultracapcitors are double layered capacitors which have a greater

A photo of supercapacitors BC and MC product ranges by Maxwell Technologies (Photo credit: Wikipedia)

advantage of long life, low cost per cycle, good reversibility, high charge and discharge rate, high output power, improved safety, no corrosive electrolyte and low toxicity of materials etc.

Diagram comparing construction of three types of capacitors: electrostatic (normal), electrolytic (high capacity) and electrochemical (supercapacitors). (Photo credit: Wikipedia)

Ultracapacitor can be charged in a second. Imagine charging your laptop battery in 1 second and using laptop for hours  

Ragone plot showing energy density vs. power density for various devices. (Photo credit: Wikipedia)

Ultracpacitors can be used in vehicles in regenerative breaking applications. Toyota TS030 HYBRID uses ultracapacitors.

KiloFarad International (kFi), an association of ultracapacitor manufacturers, submitted proposal regarding Transport requirements for ultracapacitors (Electric Double Layer Capacitors) to UN Committee of Experts on the Transport of Dangerous Goods.

Proposal considered various aspects related to transport of these capacitors including use of an existing UN number or issuing new UN number with special provisions. Subsequently UN Model Regulations 17th Revised Edition included new UN Number UN 3499 under class 9 with Proper shipping name CAPACITOR, electric double layer (with an energy – storage capacity greater than 0.3 Wh)

Watch out IMDG CODE 36^th amendment coming in print by October 2012 aligned with UN Model Regulations 17th Revised Edition.

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