摘要
采用稀释后的氨水作为反应试剂合成Co_3O_4和NiO过渡金属氧化物,是一种环保简单的方法。以Co_3O_4为例将活性物质与导电剂乙炔黑按照不同的摩尔比(4∶1、6∶1、8∶1和10∶1)制备电极,在1 mol/L的KOH电解质溶液中采用三电极测试系统进行电化学测试,结果显示:当摩尔比为8∶1时电极材料具有最佳的电化学性能,Co_3O_4呈现出了典型的赝电容特性,在1 A/g的电流密度下比电容达到394 F/g。按照此摩尔比(8∶1)对NiO进行测试,比电容达到了140F/g。
Using diluted ammonia as a reagent to synthesize Co3O4 and NiO transition metal oxides is an environmentally friendly and relatively simple method. Using Co3O4 as an example, the active material and the conductive agent acetylene black were electrochemically tested in a 1 mol/L KOH electrolyte solution at different mole ratios that was 4∶1, 6∶1, 8∶1 and 10∶1, using a three-electrode test system. The results show that when the mole ratio is 8∶1, the electrode material shows that the perfect electrochemical performance and the Co3O4 exhibits a typical pseudocapacitance with a specific capacitance of 395 F/g at a current density of 1 A/g. Based on this mole ratio, for NiO the specific capacitance is found to be 140 F/g.
作者
丁晓丽
努热曼古丽.图尔荪
菅赛赛
马承愚
吴瑶瑶
DING Xiao-li;NUERMANGULI Tuersun;JIAN Sai-sai;MA Cheng-yu;WU Yao-yao(College of Chemistry and Environmental Science, Kashgar University, Kashgar Xinjiang 844006, China;School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China)
出处
《电源技术》
CAS
北大核心
2019年第4期626-627,632,共3页
Chinese Journal of Power Sources
基金
国家自然科学基金(21173039)
高等学校博士学科专项科研基金(20110075110001)
