LITHIUM-SULFUR BATTERY WITH IMPROVED PERFORMANCES

An electrochemical cell of the lithium/sulfur type comprising:a) a cathode comprising:i) microporous carbon in the form of particles, the particle size distribution being characterized by a median volume diameter Dv50 of the particles which is greater than or equal to 1 μm and less than or equal to...

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Bibliographische Detailangaben
Hauptverfasser:	PARA, Laura Maria, HEZEQUE, Thierry, FISCHER, Florent, CALDERON, Cecilia Andrea, DOMINKO, Robert
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	An electrochemical cell of the lithium/sulfur type comprising:a) a cathode comprising:i) microporous carbon in the form of particles, the particle size distribution being characterized by a median volume diameter Dv50 of the particles which is greater than or equal to 1 μm and less than or equal to 5 μm;ii) sulfur having an oxidation degree in the range of 0 to −2 in the pores of the microporous carbon;b) an electrolyte comprising a solvent, said solvent comprising at least one fluorinated carbonate;c) an anode composed of lithium metal or of a lithium metal alloy.The electrochemical cell exhibits an improved specific gravimetry and an improved life cycle.