Saturday, April 30, 2011

Lithium Air Battery

Lonnie Johnson Develops New Battery Technology Via His Company: Excellatron

The performance of conventional lithium battery systems is limited by the fundamental capacities of both the cathode and anode used in these batteries. The best cathode materials in lithium ion batteries have a specific capacity of less than 200mAh/g. The most widely used anode material, graphitic or soft carbon, has a specific capacity of 372mAh/g. Metal/air batteries have a much larger specific energy than most of the available primary and rechargeable batteries. These batteries are unique in that the active cathode material (oxygen) is not stored in the battery. Oxygen from the environment is reduced at a catalytic air electrode surface forming either an oxide or peroxide ion that then reacts with cationic species in the electrolyte.Among various metal/oxygen batteries, Li/O2 couple is especially attractive because it has the potential of the highest specific energy (5,200Wh/kg) among all the known electrochemical couples.

The specific energy of lithium air batteries is expected to be an order of magnitude larger than that achievable using conventional lithium or lithium ion batteries. Excellatron has expanded its technology base to lithium air batteries. Until now, commercialization of these batteries has been hindered by several problems such as corrosion and low capacity. The unique technology developed by Excellatron has overcome these problems and pushed Li/Air batteries closer to practical applications. Recently, we have successfully demonstrated the feasibility of a rechargeable lithium/oxygen battery, and Li/Air demonstration samples have been successfully delivered to a customer. (Excellatron)

Lonnie G. Johnson

Dr. Lonnie Johnson
Throughout his career as a scientist and engineer, Lonnie Johnson has been driven by a desire to push the envelope of technology. Whenever told "it can't be done," his unfailing reply has been "Why not?" He has extensive experience in the high technology environment, and holds over 80 issued patents (with an additional 20 pending) on a wide range of technologies. In his 19 years with NASA's Jet Propulsion Laboratory and the Air Force, he served as a senior systems engineer on multiple space based programs including the Galileo Mission to Jupiter, the Cassini Mission to Saturn, the Mars Observer project, and the Air Force stealth bomber program. Dr. Johnson is also founder and president of Johnson Research and Development Co., Inc., where he has developed products for the consumer market. His success in this area is exemplified by his invention, the Super Soaker® water gun, which has generated almost $1 billion in retail sales. Dr. Johnson holds a BS degree in Mechanical Engineering, an MS degree in Nuclear Engineering, and a PhD in Science from Tuskegee University.

Excellatron Solid State, LLC, a U.S. based technology company, is introducing innovative and enabling energy storage technology. The batteries made possible by this new proprietary technology can be used in many applications and processes where other batteries would be inadequate. With this capability, a new world of possibilities opens up for the use of power stored in Excellatron batteries. Excellatron's technology will be the choice of power for high performance batteries in the future.
Excellatron's primary mission is to develop revolutionary energy storage technology as well as the manufacturing technology required for its cost effective commercialization.

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