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SULFUR PARTICLES COATED WITH INORGANIC-ORGANIC HYBRID MEMBRANES AS CATHODE ACTIVE MATERIAL AND BATTERIES CONTAINING THE PARTICLES

A core-shell composite sulfur particle containing a core of elemental sulfur having homogeneously dispersed particles of a conductive carbon and a polyelectrolyte polymer; and a shell containing a hybrid membrane coating of branched polyethyleneimine (bPEI) on the core and at least one sequential set of a negatively charged clay nanosheet and a further coating of bPEI encapsulating the core is provided. In the sulfur particle the dispersed particles of conductive carbon are associated with the polyelectrolyte polymer. A cathode having an active material containing the core-shell composite sulfur particle and a sulfur loading of 1.0 mg S/cm2 to 10 mg/cm2 and a battery containing the cathode are also provided.


» Number: US2018219215A1 (A1)

» Publication Date: 18//2/02/0

» Applicant: TOYOTA MOTOR ENGINEERING & MFG NORTH AMERICA INC?[US]

» Inventor: BUCUR CLAUDIU B?[US]; MULDOON JOHN?[US]

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [609149].

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