Supercapacitor Materials and Devices

Capacitors containing novel electrodes and electrolytes are described. One electrode composition comprises an oxide of Mn and Fe in a Mn:Fe molar ratio of 3:1 to 5:1. Another electrode composition comprises an oxide comprising Ni, Co, and Fe; wherein the Ni and Co are present in a Ni/Co molar ratio...

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Bibliographische Detailangaben
Hauptverfasser:	RISSER STEVEN M, TAN BING, SPAHR KEVIN B, MCGINNISS VINCENT D, CASTENADA-LOPEZ HOMERO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SYSTEMS FOR STORING ELECTRIC ENERGY TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Capacitors containing novel electrodes and electrolytes are described. One electrode composition comprises an oxide of Mn and Fe in a Mn:Fe molar ratio of 3:1 to 5:1. Another electrode composition comprises an oxide comprising Ni, Co, and Fe; wherein the Ni and Co are present in a Ni/Co molar ratio in the range of 0.5 to 2 and a Fe and Ni are present in a Ni/Fe molar ratio in the range of 1.0 to 10. The resulting capacitors can be characterized by superior properties. Methods of forming the electrodes from gels are also described. An electrolyte comprising a Li salt in a carbonate solution, wherein the carbonate solution comprises 10-30% ethylene carbonate and 70-90% propylene carbonate is also described.