Iron, fluorine, sulfur compounds for battery cell cathodes
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United States of America Patent
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Oct 10, 2017
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app pub date -
Mar 12, 2014
filing date -
Mar 13, 2013
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Abstract
Provided herein are energy storage device cathodes with high capacity electrochemically active material including compounds that include iron, fluorine, sulfur, and optionally oxygen. Batteries with active materials including a compound of the formula FeFaSbOc exhibit high capacity, high specific energy, high average discharge voltage, and low hysteresis, even when discharged at high rates. Iron, fluorine, and sulfur-containing compounds may be ionically and electronically conductive.
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