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中文摘要：
以草酸为络合剂，采用共沉淀法制得前驱体，再在氧气气氛中、500℃下煅烧2h，制备纳米多孔钴酸锌（ZnCo2O4）材料。XRD、SEM、透射电镜（TEN）和热重．差热分析（TG-DTA）测试结果表明：材料是由纳米颗粒（20—50nm）组成的纯相多孔ZnCo2O4，前驱体的热分解有2个明显的热失重过程。电化学性能测试结果表明：在0．01—3．00V充放电，当电流为100mA／g时，首次、第50次循环的放电比容量分别为1443．2mAh／g和1275．1mAh／g；当电流为500mA／g、1000mA／g和1500mA／g，平均放电比容量分别为1039mAh／g、854mAh／g和636mAh／g。
英文摘要：
Zinc cobaltate（ ZnCo2 04 ）material with porous nanostructure was prepared by using oxalic acid as complex agent to pre- pare precursor by co-precipitation method and calcining at 500 ℃ for 2 h in oxygen atmosphere. The test results of XRD, SEM, transmission electron microscopy（TEM） and thermal gravimetrlc-differential thermal analysis （TG-DTA） showed that the material had a high purity and a good crystallinity,composed of uniform ZnCo204 nanocrystals with a diameter of 20 ~ 50 nm. Two distinct weight loss steps were found in the TG process. The test results of electrochemical performance tests showed that when cycled in 0. 01 ~ 3.00 V and at the current of 100 mA/g,the specific discharge capacities of initial and 50th cycle were 1 443.2 mAh/g and 1 275. 1 mAh/g, respectively, at the current of 500 mA/g, 1 000 mA/g and 1 500 mA/g, the average specific discharge capacities were 1 039 mAh/g,854 mAh/g and 636 mAh/g,respeetively.
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