CAJ | 학술논문

以KMnO4、H2O2和（NH4）6Mo7O24.4H2O为原料,制备了MnO2-MoO3前驱物,并将其用氨水溶解,得到非晶MnO2。用XRD、TEM及EDAX进行了表征,样品为非晶MnO2。用电极循环伏安研究其电容性能：在1 mol·L^-1Na2SO4溶液中,电位窗口为-0.2-0.8 V（vs SEC）范围内,5 mV·s^-1的扫描速度下,制备的非晶MnO2比电容为356.72 F·g^-1,经过100次循环后,电容量仅下降了5.5%,具有良好的可逆循环性能。
이KMnO4、H2O2화（NH4）6Mo7O24.4H2O위원료,제비료MnO2-MoO3전구물,병장기용안수용해,득도비정MnO2。용XRD、TEM급EDAX진행료표정,양품위비정MnO2。용전겁순배복안연구기전용성능：재1 mol·L^-1Na2SO4용액중,전위창구위-0.2-0.8 V（vs SEC）범위내,5 mV·s^-1적소묘속도하,제비적비정MnO2비전용위356.72 F·g^-1,경과100차순배후,전용량부하강료5.5%,구유량호적가역순배성능。
Amorphous MnO2 was prepared by using KMnO4,H2O2 and (NH4)6Mo7O24·4H2O as raw materials via depositing,washing, calcining, and dissolving with ammonia. The synthesized product was characterized by XRD, TEM ,EDAX, and the test results show that the product is amorphous MnO2. The capacitive performance of MnO2 was measured by cyclic voltammetry (CV) method. The results indicate that in 1 mol·L^-1 Na2SO4 electrolyte in the range of-0.2-0.8 V (vs SCE),at the scan rate of 5 mV·s^-1,amorphous MnO2 exhibits a specific capacitance value of 356.72 F·g^-1. Its capacitance only decreases 5.5% after 100 cycles, which shows the excellent cycling stability.