Self-Assembled Nanoparticle Supertubes as Robust Platform for Revealing Long-Term, Multiscale Lithiation Evolution
Nanotechnology
02 engineering and technology
0210 nano-technology
7. Clean energy
DOI:
10.1016/j.matt.2019.04.009
Publication Date:
2019-09-11T14:31:50Z
AUTHORS (12)
ABSTRACT
Summary Herein, free-standing supertubes, composed of a single layer of close-packed carbon-coated nanoparticles, are fabricated by a confined-epitaxial-assembly strategy. Benefiting from the tubular geometry, monolayer superlattice structure, and uniform and conformal carbon coating, such free-standing supertubes promise high electrochemical performance while simultaneously serving as a robust platform for reliably elucidating the structure-performance relationship of lithium-ion batteries (LIBs). As a model, Fe3O4 supertubes, when used as LIB anodes, can deliver a capacity of ∼800 mAh g−1 after 500 cycles at 5 A g−1, outperforming most Fe3O4-based materials reported previously. More importantly, the structural evolution of Fe3O4 supertubes is revealed at meso-/nano-/atomic scales simultaneously upon lithiation and delithiation, which correlates well with the battery's capacity reactivation, stabilization, and degradation behaviors during the course of 500 cycles.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (52)
CITATIONS (50)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....