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filingDate 2019-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a296382737283159e91aa30d162f0492
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publicationDate 2019-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber CN-109980234-A
titleOfInvention Composite current collector, composite pole piece and electrochemical device including the same
abstract The present application relates to a composite current collector, a composite pole piece and an electrochemical device including the same. The composite current collector of the present application includes: an intermediate layer having a first surface and a second surface opposite to the first surface, and the intermediate layer is an electronically insulating ion conductor; a first metal layer disposed on the on the first surface; and a second metal layer disposed on the second surface, wherein the first metal layer and the second metal layer respectively include at least one hole, and the hole exposes a portion of the a first surface and a portion of the second surface. Since the intermediate layer is an ion conductor, the part exposed through the hole can effectively form an ion path connecting the active substances on both sides, thereby improving the ion conductivity. In addition, due to the increased ion conduction path of the composite pole piece, it helps to ensure the capacity of the positive and negative active materials, thereby further improving the energy density of the composite pole piece.
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