ELECTRIC ENERGY STORAGE DEVICE & METHOD
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United States of America Patent
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Aug 4, 2022
app pub date -
Jun 24, 2020
filing date -
Jun 24, 2019
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Abstract
Electrical energy storage device (22) comprising an anode (24), a cathode (26) and electrolyte (28), whereby the anode (24) comprises particles (10, 20, 30, 40) comprising an amorphous and/or crystalline silicon-based core (12), a continuous or non-continuous first carbon-containing shell (14, 14a), and a continuous or non-continuous second carbon-containing shell (16, 16a). The second carbon-containing shell (16, 16a) has a higher density and/or a higher atomic percentage of carbon than the first carbon-containing shell (14, 16a).
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