Fig. 1: Schematic diagram for the synthesis of the hollow gradient-structured Fe3O4@C nanospheres via an inorganic-organic competitive coating strategy. | Nature Communications

Fig. 1: Schematic diagram for the synthesis of the hollow gradient-structured Fe3O4@C nanospheres via an inorganic-organic competitive coating strategy.

From: Inorganic-organic competitive coating strategy derived uniform hollow gradient-structured ferroferric oxide-carbon nanospheres for ultra-fast and long-term lithium-ion battery

Fig. 1

The colloidal SiO2 nanospheres can be used as a sacrificial template for the hollow structure. Metallorganic compound, Ferrocene is selected as a sole source for both iron and carbon.

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