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Printed Electronics World
Posted on March 16, 2010 by  &  with 1 Comment

Printed lithium reshaping battery

In February 2010, ITSUBO Advanced Materials Innovation Center and Hatanaka Electric in Japan announced a large area printed lithium polymer battery that can be reshaped as shown in the pictures. This is the statement from Mie Prefecture Industrial Support Center for the Promotion of Education and Science, Ministry of Industry-Academia Collaboration Urban Areas (a development in the Mie Ise Bay area).
"This development of advanced materials and innovation creates a new generation all-solid polymer lithium secondary battery. It is a world first because the all-solid polymer lithium secondary battery employs a printing process.
This battery, involving new electrode material and electrode interface control technology and a new polymer electrolyte, plus a separator, avoids the safety and reliability challenges of manufacturing polymer electrolyte lithium ion secondary batteries. A safe, thin, bendable, large area battery has resulted, which offers ease of stacking. Such batteries are welcome as the printed electronics sector is expected to grow rapidly.
Development of this cell is continuing at the Principal Research and Development Center for Next Generation Batteries, Mie University, Mie Prefecture Industrial Research Institute (Kinseimatekku Co., Ltd., Kurehaerasutoma Co., Ltd., Shin-Co., Ltd., Toppan Printing Co., Ltd., Myeongseong Chemical Co., Ltd.). It has been jointly conducted by the government and academia."
Photos prototype polymer lithium secondary batteries

Prototype battery performance

"Cell size A6 (external dimension), cell thickness 450μm (external dimension)
Initial charge and discharge efficiency of 99%
Initial capacity of 45mAh (electrode material utilization efficiency of 80%)
Operating voltage 1.8 V (voltage at 50% depth of discharge)
Discharge rate of 0.02C ~ 1.0C of more than 100 cycle times (the current ongoing evaluation)
Operating Temperature 0 ~ 25 ℃
In future, we will dramatically improve the performance of the battery cell structure design and optimization of polymer electrolyte interface control electrode materials."
Second generation lithium batteries that are safer and have better performance are incorporated in the Lightning Car Company's Lightning sports car, the KleenSpeed Technologies 200mph Formula One car, the Hawkes Ocean Technologies Deepflight submarines, the PC-Aero pure electric aircraft etc. but even more powerful batteries will be welcome.

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Posted on: March 16, 2010

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