Effects of Temperature and Concentration on the Structure and Specific Capacitance of Manganese Oxide Deposited in Manganese Acetate Solution

J.-K. Chang; W.-T. Tsai
September 2004
Journal of Applied Electrochemistry;Sep2004, Vol. 34 Issue 9, p953
Academic Journal
The deposition of manganese oxide on a carbon substrate in manganese acetate solution by anodic deposition was investigated. The effects of electrolyte concentration (0.05–1 m) and temperature (0–50 °C) on the characteristics of the oxide prepared were explored. The surface morphology of the oxide deposited was examined by scanning electron microscopy (SEM). Oxide whiskers were found on the deposited film surface, and they became coarser and longer when deposited at a high temperature. X-ray photoelectron spectroscopy (XPS) was carried out to examine the composition of the deposit. The results indicated that the oxides deposited at 0 and 25 °C contained trivalent and tetravalent manganese oxide. However, the mixture of bivalent and trivalent oxide was found when the deposition temperature was raised to 50 °C. Moreover, the amount of anhydrous Mn oxide (i.e., Mn–O–Mn) and water content in the deposit gradually decreased with increasing deposition temperature. The concentration of manganese acetate could affect the oxidation state of manganese ions as well as the morphology of the oxide deposited. Cyclic voltammetry (CV) was used to evaluate the electrochemical performance of the oxide deposited. The results showed that the specific capacitance of the manganese oxide increased with decreasing deposition temperature. Moreover, an optimum value of specific capacitance was found for the oxide deposited in 0.5 m manganese acetate solution.


Related Articles

  • Experimental and theoretical study of the photoelectron spectra of MnO[sub x][sup -](x=1-3) clusters. Gutsev, Gennady L.; Rao, B. K.; Rao, B.K.; Jena, P.; Li, Xi; Xi Li; Wang, Lai-Sheng; Lai-Sheng Wang // Journal of Chemical Physics;7/22/2000, Vol. 113 Issue 4 

    We report a combined experimental and theoretical investigation of MnO[sub x][sup -] and MnO[sub x](x=1-3) clusters. Theoretically, geometrical configurations of various isomers of the clusters were optimized and vertical detachment energies for the anions were evaluated. The ground state of...

  • CO Oxidation Over Monolayer Manganese Oxide Films on Pt(111) Martynova, Y.; Soldemo, M.; Weissenrieder, J.; Sachert, S.; Polzin, S.; Widdra, W.; Shaikhutdinov, S.; Freund, H.-J. // Catalysis Letters;Nov2013, Vol. 143 Issue 11, p1108 

    Ultrathin manganese oxide films grown on Pt(111) were examined in the low temperature CO oxidation reaction at near atmospheric pressures. Structural characterization was performed by X-ray photoelectron spectroscopy, Auger electron spectroscopy, high-resolution electron energy loss...

  • Spectroscopic investigation of interfacial interaction of organic compounds and manganese oxides. Shaikh, Nabil // New Mexico Journal of Science;Dec2015, Vol. 49 Issue 1, p18 

    Water reuse has become a necessary practice in semi-arid regions. However, a new generation of emerging organic micropollutants has been increasingly scrutinized in water sources. The oxidation of organic micropollutants by reaction with manganese oxides [MnOx] has been widely studied but little...

  • Electrical transport and optical emission of MnxZr1-xO2(0≤x≤0.5) thin films. Zippel, J.; Lorenz, M.; Lenzner, J.; Grundmann, M.; Hammer, T.; Jacquot, A.; Böttner, H. // Journal of Applied Physics;Aug2011, Vol. 110 Issue 4, p043706 

    Mnx Zr1-x O2 (MnZO) thin films were grown by pulsed-laser deposition on single crystalline yttria-stabilized zirconia (YSZ) and a-plane sapphire substrates with manganese contents from 0 up to about 50 at.%. A fully stabilized cubic structure occurs for Mn contents x equal or larger than 20 at....

  • Metal-insulator transition characteristics of VO2 thin films grown on Ge(100) single crystals. Yang, Z.; Ko, C.; Ramanathan, S. // Journal of Applied Physics;Oct2010, Vol. 108 Issue 7, p073708 

    Phase transitions exhibited by correlated oxides could be of potential relevance to the emerging field of oxide electronics. We report on the synthesis of high-quality VO2 thin films grown on single crystal Ge(100) substrates by physical vapor deposition and their metal-insulator transition...

  • Manganese oxide anodized from manganese films electrodeposited at different cathodic currents and its capacitive performance. Wenpo Li; Xiuli Zuo; Tangman Lv; Shengtao Zhang // Advanced Materials Research;2014, Issue 926-930, p932 

    Nanostructured manganese oxide films were obtained by electro-oxidation of manganese films electrodeposited at two typical cathodic currents of 65 mA cm-2 (EDM-65 oxide) and 150 mA cm-2 (EDM-150 oxide) from sulfate solutions with additives. Obtained Mn oxide films were studied by scanning...

  • Growth and electrical transport study in pulsed laser deposited Sr2CoO4 thin film on (001) MgO substrate. Pandey, Pankaj K.; Choudhary, R. J.; Phase, D. M. // AIP Conference Proceedings;Feb2013, Vol. 1512 Issue 1, p634 

    We succeeded to synthesize oriented film of Sr2CoO4 (SCO) on single crystalline (001) MgO substrate using pulsed laser deposition (PLD) technique. Structural and electrical properties of the grown thin film are studied using xray diffraction, x-ray photoemission spectroscopy, magnetization and...

  • Electronic Study of Al substituted La0.7Ca0.3MnO3 Using Photoemission Spectroscopy. Phase, D. M.; Kumar, Manish; Wadikar, A. D.; Choudhary, R. J. // AIP Conference Proceedings;2014, Vol. 1591, p1087 

    Polycrystalline samples of La0.7Ca0.3Mn1-XAlXO3 (X=0, 0.05, 0.15) are prepared using solid state reaction route. Photoemission spectroscopy measurements were performed on these samples to investigate their electronic properties. Al shows 3+ oxidation state in both Al doped samples while no...

  • Chemical state of the surface of mechanically activated MnO oxides. Fetisov, A.; Kozhina, G.; Fetisov, V.; Pastukhov, E. // Journal of Applied Spectroscopy;May2011, Vol. 78 Issue 2, p240 

    X-ray photoelectron spectroscopy is used to study MnO, MnO, and MnO manganese oxide surfaces subjected to mechanical activation by means of high intensity grinding. It is found that MnO is the most thermodynamically stable of these oxides; mechanical activation converts the surface layers of MnO...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics