Article ID Journal Published Year Pages File Type
180176 Electrochemistry Communications 2010 4 Pages PDF
Abstract

Hollow microspheres composed of phase-pure ZnFe2O4 nanoparticles (hierarchically structured) have been prepared by hydrothermal reaction. The unique hollow spherical structure significantly increases the specific capacity and improves capacity retention of this material. The product of each phase transition during initial discharge (ZnFe2O4 ↔ Li0.5ZnFe2O4 ↔ Li2ZnFe2O4 → Li2O + Li–Zn + Fe) and their structural reversibility are recognized by X-ray diffraction and electrochemical characterization. The products of the deeply discharged (Li–Zn alloy and Fe) and recharged materials (Fe2O3) were clarified based on high resolution transmission electron microscopic technique and first-principle calculations.

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Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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