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运用微乳液法,以醋酸盐为原料,草酸为沉淀剂,CTAB为表面活性剂,乙二醇为单一溶剂首先合成前驱体ZnCo2(C2O4)3纳米线,然后用ZnCo2(C2O4)3纳米线作为牺牲模板经过煅烧合成多孔的ZnCo2O4纳米线。用FT-IR、XRD、SEM、TEM和电化学性能测试,研究得到的产物的形貌结构和电化学性能。结果表明:合成了具有一维结构的尖晶石结构的ZnCo2O4纳米线,由于具有较大的比表面积和多孔性,更有利于锂离子的嵌入与脱出,其初始放电比容量达1841mAh.g-1,25次循环后容量还能达到765mAh.g-1,整体的库伦效率维持在100%左右,循环性能良好。
The microemulsion method was used to synthesize precursor ZnCo2 (C2O4) 3 nanowires with acetate as raw material, oxalic acid as precipitating agent, CTAB as surfactant and ethylene glycol as single solvent. As a sacrificial template after calcination synthesis of porous ZnCo2O4 nanowires. The FT-IR, XRD, SEM, TEM and electrochemical properties were used to investigate the morphology and electrochemical properties of the product. The results show that the ZnCo2O4 nanowires with one-dimensional spinel structure are more suitable for the intercalation and delamination of lithium ions because of their large specific surface area and porosity. The initial discharge specific capacity of ZnCo2O4 nanowires is 1841mAh.g- 1,25 cycles after the capacity can reach 765mAh.g-1, the overall efficiency of the Coulomb maintained at about 100%, cycling performance is good.