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Cooper Electronic Tech Carbon Aerogel Capacitors

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  • RemyC
    From: http://www.acq.osd.mil/mda/mdalink/pdf/powrstor.pdf via: http://www.acq.osd.mil/mda/mdalink/html/03report.html#manu.anc Missile Defense Agency 2003
    Message 1 of 1 , Jul 27, 2004
      via: http://www.acq.osd.mil/mda/mdalink/html/03report.html#manu.anc

      Missile Defense Agency 2003 Technology Applications Report
      Electrical, Electronic, and Magnetic Devices

      In 1992 and 1993, BMDO funded LLNL to develop the carbon aerogel capacitors
      for use in lightweight batteries for space applications. The higher energy
      densities of the capacitors translate into more power stored in a smaller
      package. Banks of aerogel capacitors could be used to provide energy for
      electronic subsystems, such as those used for computers and communications.
      applications. Prices range from $0.25 to $30, depending on the type and
      quantity desired.

      When It Will Be Ready:

      More than 10 million of these devices have been sold in Asia, Europe, and
      the United States, with new applications emerging monthly. One notable
      customer, Microsoft, uses the capacitor to power the clock in its new X-BoxT
      gaming console system. Several aviation equipment manufacturers install the
      device in their aircraft displays to maintain continuous voltage when
      switching from one electrical bus to another. Other applications include
      low-tech toys, valve actuators, and insulin pumps.

      Who Is Working On It:

      Cooper Electronic Technologies is selling these devices. The company
      acquired this technology by purchasing PowerStor, a subsidiary of the
      now-defunct PolyStor Corporation. PolyStor licensed the aerogel capacitor
      technology from Lawrence Livermore National Laboratory (LLNL), which
      originally developed the technology. PowerStor employs 25 people in its
      18,000-square-foot office facility in Dublin, California where the
      capacitors and their electrodes are made. The business unit also owns
      manufacturing facilities in Malaysia and China; these plants produce the
      capacitor's packaging.

      How It Helps:

      The PowerStor aerogel capacitor offers big electrical storage capabilities
      in a small package. The capacitor has extremely fast discharge capabilities
      and low equivalent series resistance, which make it ideal for pulsed power
      applications. The device has high energy density (100 times greater than
      electrolytic capacitors) and high power (10 to 100 times greater than
      conventional lithium batteries). Because there are no chemical reactions, it
      can be recharged hundreds of thousands of times without degradation. Other
      advantages include small size, low cost, and reliable operation over a wide
      temperature range.

      How It Works:

      The PowerStor aerogel capacitor is based on a novel material called carbon
      aerogel. Carbon aerogels consist of interconnected nanometersized particles
      with small pores. This monolithic structure leads to very high surface area
      (the equivalent surface area of 10 football fields) and high electrical
      conductivity. Capacitors can be made using thin-film carbon aerogel paper as
      both the positive and negative electrodes. A microporous separator is placed
      between the two electrodes, creating a sandwich that is wound in "jellyroll"
      fashion and housed in an aluminum or steel can. The can is then filled with
      electrolyte and sealed, with protruding leads. When the capacitor is
      charged, positive and negative ions are oriented along the surfaces of the
      oppositely charged electrodes. As energy is released, this orientation
      relaxes back to a
      disorganized state.

      For more information,
      contact Marc Juzkow of Cooper Electronic Technologies
      at (925) 828-6700
      or mjuzkow@ cooperet.com
      The company Web site is

      Critically ill patient clings to life in a hospital intensive care ward with
      the help of a respirator. Suddenly, the main power source to the building is
      cut by construction workers digging in a nearby neighborhood. Panic grips
      the nurses attending the patient because a short moment without power could
      disable respirators before the hospital's backup generator turns on. Here is
      a product that could run sensitive equipment for a short duration until
      backup power kicks in.
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