US Patent:
20140272564, Sep 18, 2014
Inventors:
- San Jose CA, US
Joseph Han - Redwood City CA, US
Weston Arthur Hermann - Palo Alto CA, US
Rainer J. Fasching - Mill Valley CA, US
Bradley O. Stimson - Monte Sereno CA, US
Cheng Chieh Chao - Santa Clara CA, US
Assignee:
QuantumScape Corporation - San Jose CA
International Classification:
H01M 4/36
H01M 4/1391
H01M 4/04
H01M 4/52
US Classification:
429211, 429221, 25251914, 252513, 4271266, 427123, 427124
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 FeFSOexhibit 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.