Electrochemical device and its manufacturing method
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United States of America Patent
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Oct 24, 2017
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app pub date -
Jul 24, 2008
filing date -
Jul 25, 2007
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Abstract
An electrochemical device includes an electrode structure provided with a composite separator having a porous substrate with a plurality of pores and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of electrode active material particles and a binder polymer. The porous coating layer of the composite separator improves thermal stability of the porous substrate and plays a function of electrode active material layer of the electrochemical device. Accordingly, this electrochemical device has excellent stability and good economical efficiency since the electrode structure does not need coating of an electrode active material layer on a surface of a current collector.
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