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*** For immediate use March 5, 2012
Tokyo, March 5, 2012 - NEC Corporation (NEC; TSE: 6701) announced today the development of an ultra-thin, 0.3mm thick, organic radical battery (ORB; *1) that is compatible within standard IC cards of 0.76mm thickness.
The adoption of these ultra-thin ORBs featuring greater flexibility, higher power output and faster recharging speeds than existing rechargeable batteries, including lithium-ion batteries, is expected to enable advanced new functions in IC cards, electronic paper and other technologies.
Conventional ORBs of 0.7mm thickness are difficult for IC cards of standard 0.76mm thickness to adopt.
These new, 0.3mm ORBs are less than half the thickness of existing units, a size reduction that was accomplished by using printing technologies to integrate circuit boards with batteries. As a result, IC cards embedded with these batteries can be used for a wide range of functions, including displays, transmission and advanced encryption processing.
Key features of this newly developed organic radical battery are as follows:
*1 Organic Radical Battery (ORB)
NEC first proposed using an organic radical compound as a battery's active electrode material in 2001. Charging occurs through the radical compound's oxidation-reduction (redox) reaction. ORB advantages include their extremely high power (large current discharge at one time). Research and development was partially carried out by the "Basic Technology Development for Fiber Materials Having Advanced Functions / Development of Battery Components to Enhance Performance and Functionality" project, sponsored by the Ministry of Economy Trade and Industry (METI), as well as the New Energy and Industrial Technology Development Organization (NEDO).