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US 12,559,384 B2Granted
Method for manufacturing iron-chromium oxide using ion exchange resin
AssigneeKorea University Research and Business Foundation
InventorSang Hoon Song
Life of this patent
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Abstract
The present invention relates to a method of preparing an iron-chromium oxide using an ion-exchange resin. Moreover, the present invention relates to a method of preparing an iron-chromium oxide that can be used as a cathode material for lithium-ion batteries. According to one aspect of the present invention, it has the effect of providing a cathode material for lithium-ion batteries with a high capacitance, while exhibiting a voltage similar to that of a transition-metal oxide (2-4.5 V vs Li+/Li).
Claims6
A method of preparing an iron-chromium oxide, comprising:
- providing an ion exchange column substituted with Fe3+ ions;
- adding a hexavalent chromium (Cr6+) compound to the ion exchange resin column to obtain an ion-exchanged aqueous solution;
- and
- heat-treating the ion-exchanged aqueous solution,
- wherein the heat-treating is performed at 270° C. to 350° C.
2 more elements
Dependencies are inferred from the claim text.