Sulfur-doped ZnFe₂O₄ nanoparticles with enhanced lithium storage capabilities

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• 作者：Longying Nie ; Huijun Wang ; Jingjing Ma ; Sheng Liu ; Ruo Yuan
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：52
• 期：7
• 页码：3566-3575
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

Sulfur-doped ZnFe₂O₄ nanoparticles were synthesized through sulfurizing ZnFe₂O₄ nanoparticles in the hydrothermal process using Na₂S as the sulfur source. The content of sulfur dopant was tuned from 0.70 to 1.26 wt% by controlling concentrations of Na₂S solutions. When evaluated as anode materials for lithium-ion batteries, sulfur-doped ZnFe₂O₄ nanoparticles exhibited much higher reversible capacities, better rate performances, and more excellent cycling stabilities than the pristine ZnFe₂O₄ nanoparticles. After 60 cycles at a current density of 100 mA g−1, the electrode of sulfur-doped ZnFe₂O₄ nanoparticles (1.26 wt%) delivered a reversible specific capacity of 604 mA h g−1, while the pristine ZnFe₂O₄ electrode only remained 200 mA h g−1.