【摘要】 通过调控溶液中的离子强度,制备Fe₃O₄与氧化石墨烯的复合材料,该方法环境友好且简单。进一步研究Fe₃O₄/GO复合材料作为锂离子电池负极材料的性能,结果与Fe₃O₄纳米颗粒相比有着显着的改善。在电流密度为500mA/g时,充放电循环100次后,Fe₃O₄/GO复合材料的放电比容量仍有930mAh/g。更多还原

【Abstract】 Fe₃O₄/GO composites were prepared, by engineering the ionic strength in solutions, which is friendly and simple. The applications of Fe3O4/GO composites as lithium ion battery anode materials were further investigated. The results show that Fe₃O₄/GO composites exhibit significant improvements over Fe₃O₄ nanoparticles. Galvanic charge-discharge test using Fe₃O₄/GO composites shows a specific capacity of 930 m Ah/g. after 100 cycles at 500 m A/g current rate. GO can improve electronic conductivity, and rich wrinkles in GO can provide extra space for volume expansion of Fe₃O₄ and prevent the electrode from disruption.更多还原