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中文摘要：
以氧化还原法制备石墨烯，通过水合肼还原得石墨烯，通过共沉淀法制备石墨烯／MnO2复合材料，将所得的复合材料进行SEM和XRD分析，通过电化学性能测试及在铝空气电池中的应用，得出的不同石墨烯含量的石墨烯／二氧化锰的电化学性能，发现含石墨烯50％的GN／MnO2的复合材料的效果最佳，在20，40，60，80，100和120mA／cm^2的电流密度下放电平台为1．25，1．06，0．95，O．87，0．80和0．76V。
英文摘要：
Graphene was prepared by redox using hydrazine, and graphene/MnO2 composite was prepared through coprecipitation method. The as-prepared composites were characterized by SEM and XRD, and its application in the aluminum air battery was researched by electrochemical performance test. The electrochemical performance of graphene/manganese dioxide with different graphene content was obtained. It was found that GN/MnO2 composites showed the best electrochemical performance, when the graphene content was 50 %. The discharge platform was 1.25, 1.06, 0.95, 0.87, 0.80 and 0.76 V, under the current density of 20, 40, 60, 80, 100 and 120 mA/cm^2, respectively.
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