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以碳纳米管(CNTs)、锡酸钾(K2SnO3)、葡糖糖为原料,通过一步水热法并辅以简单的热处理工艺,制备出CNTs/SnO2@C及CNTs/SnO2一维壳核结构复合纳米材料,随后对CNTs/SnO2@C、CNTs/SnO2、CNTs材料进行结构、形貌及其锂存储特性分析。研究结果表明,一步水热法可以制备出CNTs/SnO2@C材料。结果分析表明,CNTs/SnO2@C材料分散性好,SnO2负载量高,其中SnO2的质量分数高达60%,碳包覆层的质量分数约为15%,该材料在100mA/g的充放电电流下循环50次后的放电比容量达到45616 mAh/g。
CNTs / SnO2 @ C and CNTs / SnO2 single-walled core-shell structures were prepared by one-step hydrothermal method and simple heat treatment using carbon nanotubes (CNTs), K2SnO3 and glucose as raw materials Composite nanomaterials, and then the structure, morphology and lithium storage properties of CNTs / SnO2 @ C, CNTs / SnO2 and CNTs materials were analyzed. The results show that CNTs / SnO2 @ C materials can be prepared by one-step hydrothermal method. The results show that the CNTs / SnO2 @ C material has good dispersibility and high SnO2 loading, in which the mass fraction of SnO2 is up to 60% and the mass fraction of carbon coating is about 15%. The charge-discharge current After 50 cycles, the specific discharge capacity reached 45616 mAh / g.