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US 2018/0123133 A1Published application
In situ formation of sulfur particles using organic acids in the presence of polymer functionalized carbon
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsJohn MULDOON, Claudiu B. Bucur
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Abstract
A sulfur particle containing a core of elemental sulfur having homogeneously dispersed particles of a conductive carbon and branched polyethyleneimine; and a coating of branched polyethyleneimine (bPEI) encapsulating the core is provided. In the sulfur particle the dispersed particles of conductive carbon are associated with the bPEI. A cathode having an active material containing the sulfur particles and a sulfur loading of 1.0 mg S/cm2 to 10 mg/cm2 and a battery containing the cathode are also provided.
Claims20
A sulfur particle, comprising:
- a core of elemental sulfur comprising homogeneously dispersed particles of a conductive carbon and branched polyethyleneimine;
- and
- a coating of branched polyethyleneimine (bPEI) encapsulating the core;
- wherein the dispersed particles of conductive carbon are associated with the bPEI of the elemental sulfur core.
1 more element
Dependencies are inferred from the claim text.