Carbon-coated ferroferric oxide supercapacitor negative electrode material and preparation method thereof
By forming a uniform carbon layer on the surface of iron oxide and combining it with a ball milling process using nitric acid-ethanol solution, the conductivity and stability problems of existing supercapacitor anode materials have been solved. This has resulted in the preparation of carbon-coated iron oxide materials with high specific capacitance and excellent cycle stability, which are suitable for high-performance supercapacitors.
CN121034857BActive Publication Date: 2026-06-09KUNMING UNIV OF SCI & TECH
Patent Information
- Authority / Receiving Office
- CN ยท China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- KUNMING UNIV OF SCI & TECH
- Filing Date
- 2025-09-28
- Publication Date
- 2026-06-09
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Figure CN121034857B_ABST
Abstract
The application discloses a kind of carbon-coated ferroferric oxide supercapacitor negative materials and preparation method thereof, the method is first with iron nitrate, citric acid and sodium sulfate as raw material, by sol-gel method preparation mixed sodium sulfate gel precursor, then by pyrolysis makes Fe3O4 Surface form uniform carbon layer, and then combine nitric acid-ethanol solution ball milling process, significantly increase the active site on the surface of material, effectively promote electrolyte ion migration and surface faradaic reaction, so as to fully exert the pseudo-capacitance characteristics of Fe3O4, greatly improve the specific capacitance of material;The application provides a kind of preparation method of carbon-coated ferroferric oxide supercapacitor negative material, which is simple in process, low in cost and excellent in performance, provides a new idea for the design and controllable preparation of high-performance supercapacitor negative material.
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