Synthesis and properties of Sn-doped α-FeOOH nanoparticles

Popov, Nina; Ristić, Mira; Robić, Marko; Gilja, Vanja; Krehula, Ljerka Kratofil; Musić, Svetozar; Krehula, Stjepko

doi:10.1007/s11696-021-01802-9

Cited by 10 publications

(1 citation statement)

References 63 publications

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“…With the development of portable electronics and electric vehicles, advanced lithium-ion batteries (LIBs) have become urgently desirable [ 1 , 2 , 3 , 4 , 5 ]. The key issue for high performance batteries (high energy/power density) is developing advanced anode materials with high specific capacity and high electronic/ionic conductivity.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical-Structured Fe2O3 Anode with Exposed (001) Facet for Enhanced Lithium Storage Performance

et al. 2023

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The hierarchical structure is an ideal nanostructure for conversion-type anodes with drastic volume expansion. Here, we demonstrate a tin-doping strategy for constructing Fe2O3 brushes, in which nanowires with exposed (001) facets are stacked into the hierarchical structure. Thanks to the tin-doping, the conductivity of the Sn-doped Fe2O3 has been improved greatly. Moreover, the volume changes of the Sn-doped Fe2O3 anodes can be limited to ~4% vertical expansion and ~13% horizontal expansion, thus resulting in high-rate performance and long-life stability due to the exposed (001) facet and the unique hierarchical structure. As a result, it delivers a high reversible lithium storage capacity of 580 mAh/g at a current density of 0.2C (0.2 A/g), and excellent rate performance of above 400 mAh/g even at a high current density of 2C (2 A/g) over 500 cycles, which is much higher than most of the reported transition metal oxide anodes. This doping strategy and the unique hierarchical structures bring inspiration for nanostructure design of functional materials in energy storage.

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