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ÌâÄ¿£ºUniform yolk¨Cshell Sn4P3@C nanospheres as high-capacity and cycle-stable anode materials for sodium-ion batteries ×÷ÕߣºJun Liu,bc Peter Kopold,b Chao Wu,b Peter A. van Aken,b Joachim Maier,b Yan Yu*ab * Corresponding authors £¨ÎÒ¿Æ´ó½ÌÊÚţţણ¡£© a Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, China E-mail: yanyumse@ustc.edu.cn b Max Planck Institute for Solid State Research, Heisenbergstr. 1, Stuttgart, Germany c School of Materials Science and Engineering, South China University of Technology, Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, Guangzhou 510641, China ÕªÒª£ºUniform yolk¨Cshell Sn4P3@C nanospheres were facilely synthesized via a top-down phosphorized route with yolk¨Cshell Sn@C nanospheres as the precursor. As anode materials for Na-ion batteries, they exhibit very high reversible capacity (790 mA h g−1), superior rate capability (reversible capabilities of 720, 651, 581, 505, and 421 mA h g−1 at 0.2C, 0.4C, 0.8C, 1.5C, and 3C, respectively) and stable cycling performance (a high capacity of 360 mA h g−1 at 1.5C after long 400 cycles). GA.gif |
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