CAJ | 학술논문

采用硝酸锰(Mn(NO3)2)、甘氨酸(NH2CH2COOH)为原料，利用溶液燃烧法将锰氧化物通过一步反应直接包覆在碳纸表面，获得三维且具有纳米多孔结构的四氧化三锰/碳复合电极材料。利用扫描电镜(SEM)及X射线衍射(XRD)对该材料的表面形貌、结构和物相进行分析表征。采用Princeton电化学工作站和Arbin 超电容测试系统对材料的电化学性能进行测试。结果表明：通过调整反应物 Mn(NO3)2与 NH2CH2COOH 的比例，可获得不同包覆形貌的锰/碳复合材料。Mn(NO3)2与NH2CH2COOH的物质的量比n(Mn(NO3)2)/n(NH2CH2COOH)为1时，得到锰氧化物连续包覆的三维纳米多孔复合电极材料。所制备的电极材料的电化学性能优良，在0.5 A/g的电流密度下，比容量达到201 F/g。在5 A/g的电流密度下循环1000次后，仍保持94%的初始容量。
채용초산맹(Mn(NO3)2)、감안산(NH2CH2COOH)위원료，이용용액연소법장맹양화물통과일보반응직접포복재탄지표면，획득삼유차구유납미다공결구적사양화삼맹/탄복합전겁재료。이용소묘전경(SEM)급X사선연사(XRD)대해재료적표면형모、결구화물상진행분석표정。채용Princeton전화학공작참화Arbin 초전용측시계통대재료적전화학성능진행측시。결과표명：통과조정반응물 Mn(NO3)2여 NH2CH2COOH 적비례，가획득불동포복형모적맹/탄복합재료。Mn(NO3)2여NH2CH2COOH적물질적량비n(Mn(NO3)2)/n(NH2CH2COOH)위1시，득도맹양화물련속포복적삼유납미다공복합전겁재료。소제비적전겁재료적전화학성능우량，재0.5 A/g적전류밀도하，비용량체도201 F/g。재5 A/g적전류밀도하순배1000차후，잉보지94%적초시용량。
A novel solution combustion synthesis method was used to prepare 3-D nanoporous Mn3O4/C composite electrode, with manganese oxide covered uniformly on the surface of carbon paper. Manganous nitrate (Mn(NO3)2)and glycine (NH2CH2COOH) were used as reactants. The morphology, microstructure and phase composition of the as-prepared samples were characterized by scanning electron microscopy and X-ray diffraction analysis. The electrochemical studies of the hybrid structure were conducted in Princeton workstation and Arbin systerm. Different morphologies of manganese oxide were obtained by tuning the ratio of the reactants. And the results show that the composite possesses a continuous, uniform morphology when the ration of manganous nitrate and NH2CH2COOH is 1:1. The hybrid structure shows excellent electrochemical performance, with a specific capacitance of 201 F/g at a current density of 0.5A/g, as well as good long-term cycle stability, with a retention of 94% of the initial capacitance after 1000 cycles.