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Inorganic-organic competitive coating strategy derived uniform hollow gradient-structured ferroferric oxide-carbon nanospheres for ultra-fast and long-term lithium-ion battery.
- Source :
- Nature Communications; 5/20/2021, Vol. 12 Issue 1, p1-10, 10p
- Publication Year :
- 2021
-
Abstract
- The gradient-structure is ideal nanostructure for conversion-type anodes with drastic volume change. Here, we demonstrate an inorganic-organic competitive coating strategy for constructing gradient-structured ferroferric oxide-carbon nanospheres, in which the deposition of ferroferric oxide nanoparticles and polymerization of carbonaceous species are competitive and well controlled by the reaction thermodynamics. The synthesized gradient-structure with a uniform size of ~420 nm consists of the ferroferric oxide nanoparticles (4–8 nm) in carbon matrix, which are aggregated into the inner layer (~15 nm) with high-to-low component distribution from inside to out, and an amorphous carbon layer (~20 nm). As an anode material, the volume change of the gradient-structured ferroferric oxide-carbon nanospheres can be limited to ~22% with ~7% radial expansion, thus resulting in stable reversible specific capacities of ~750 mAh g<superscript>−1</superscript> after ultra-long cycling of 10,000 cycles under ultra-fast rate of 10 A g<superscript>−1</superscript>. This unique inorganic-organic competitive coating strategy bring inspiration for nanostructure design of functional materials in energy storage. The gradient-structure is ideal nanostructure for conversion-type anodes with drastic volume change. Here, the authors demonstrate an inorganic-organic competitive coating strategy to construct gradient-structured Fe<subscript>3</subscript>O<subscript>4</subscript>@C nanospheres. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 12
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Nature Communications
- Publication Type :
- Academic Journal
- Accession number :
- 150409215
- Full Text :
- https://doi.org/10.1038/s41467-021-23150-8