NEGATIVE ELECTRODES FOR USE IN ACCUMULATORS OPERATING ACCORDING TO THE ION INSERTION AND DEINSERTION OR ALLOY FORMATION PRINCIPLE AND ACCUMULATOR COMPRISING SUCH AN ELECTRODE
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United States of America Patent
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Issued Date -
Jul 9, 2020
app pub date -
Jan 6, 2020
filing date -
Jan 8, 2019
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Abstract
A negative electrode for an accumulator functioning based on the ion insertion and deinsertion principle and/or based on the alloy formation and dealloying principle, the negative electrode comprising: a first layer comprising an active material deposited via one of its faces, on a first face of a current collector; a second layer comprising an active material deposited via one of its faces, on a second face of a current collector, the first face being opposite the second face; wherein the current collector is provided with through holes connecting the first layer to the second layer and in that the first layer is coated with a layer composed of a metal, the corresponding cations of which are those used in the ion insertion and deinsertion process and/or in the alloy formation and dealloying process in the active material of the first layer and the second layer.
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