NEGATIVE ELECTRODES FOR USE IN ACCUMULATORS OPERATING ACCORDING TO THE ION INSERTION AND DEINSERTION OR ALLOY FORMATION PRINCIPLE AND WITH SPIRAL CONFIGURATION
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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 functions based on the ion insertion and deinsertion principle and/or based on the alloy formation and dealloying principle. A first layer comprises an active material deposited on a first face of a current collector. A second layer comprises an active material deposited on a second face of a current collector, the first face being opposite the second face. The negative electrode extends lengthwise in an electrode longitudinal direction. Each of the first and second layers is partly coated with an assembly of strips of a metal, the cations of the metal are those involved in the ion insertion and deinsertion process and/or in the alloy formation and dealloying process in the active material of the first and second layers, the strips being separated along the electrode longitudinal direction and each extend lengthwise along a strip longitudinal direction substantially perpendicular to the electrode longitudinal direction.
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