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To improve the performance of anatase TiO2 as an anode material for sodium-ion batteries, Zn2+-doped TiO2/C composites are synthesized by a co-precipitation method. The results of XRD, EPR and XPS demonstrate that Zn2+ occupies at the Ti4+ site of TiO2 to form a solid-solution, resulting in an expansion of lattice and an increase of Ti3+ content. The expansion of lattice can enhance the stability...
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