Dendritic nanostructured FeS₂-based high stability and capacity Li-ion cathodes.

ABSTRACT: Here we show that dendritic architectures are attractive as the basis of hierarchically structured battery electrodes. Dendritically structured FeS₂, synthesized via simple thermal sulfidation of electrodeposited dendritic α-Fe, was formed into an electrode and cycled vs. lithium. The reversible capacities of the dendritic FeS₂ cathode were 560 mA h g^-1 at 0.5C and 533 mA h g^-1 at 1.0C after 50 cycles over 0.7-3.0 V. Over 0.7-2.4 V, where the electrode is more stable, the reversible capacities are 348 mA h g^-1 at 0.2C and 179 mA h g^-1 at 1.0C after 150 cycles. The good cycling performance and high specific capacities of the dendritic FeS₂ cathodes are attributed to the ability of a dendritic structur

SUBMITTER: Yu Z 

PROVIDER: S-EPMC9090669 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature