Potassium-ion batteries (PIBs) have attracted increasing attention in the past two years. However, the lower intercalation-type capacity of the current graphite anode has limited the development of PIBs. Herein, we report a convention-alloying-type hollow Sb2Se3@C microtube prepared via a self-templated route by employing Sb2O3 microrods as the self-sacrificial templates. In situ Raman spectra investigation confirmed that the potassium storage mechanism of the Sb2Se3@C microtubes is the convention-alloying-type with the formation of K2Se in the first convention reaction process and K3Sb phase in the following alloying reaction stage. As an anode material for PIBs, the Sb2Se3@C microtubes exhibit a capacity of 312.8 mA h g−1 at 100 mA g−1 after 40 cycles, and a rate capability of 223.3 mA h g−1 at 1 A g−1. The capacity could be maintained at 191.4 mA h g−1 at 500 mA g−1 even after 400 cycles, suggesting that the carbon-supported hollow structure is in favor of enhanced potassium storage.

Self-templating growth of Sb2Se3@C microtube: a convention-alloying-type anode material for enhanced K-ion batteries

Raman spectra of single‐crystal CoSb3 and RhSb3 and of polycrystalline IrSb3 have been studied. We have also studied four different polycrystalline‐filled skutterudite samples, Ir4LaGe3Sb9, Ir4NdGe3Sb9, Ir4SmGe3Sb9, and Fe4CeSb12, where rare‐earth ions occupy the voids in the skutterudite structure. These void‐filling ions interact with some of the lattice vibrations in this structure and produce a shift and broadening of the observed lines. The most prominent lines in all of the samples are the Sb4 ring‐breathing modes.

Raman scattering study of antimony‐based skutterudites

Complementary effects of solid lubricants in the automotive brake lining

This study details density functional theory calculations on all the polymorphs of the binary oxides of antimony (Sb2O3, Sb2O4, and Sb2O5) to assess the electronic structures and differences in bon...

C. A. Cody

Papers

Vibrational and Thermal Study of Antimony Oxides

Differential scanning calorimetric and Raman spectroscopic study of polymorphism in Na2SO4

Differential scanning calorimetric and raman spectroscopic study of polymorphism in sodium sulfate