SYNTHESIS AND INVESTIGATION OF NANOSTRUCTURED MIXED COBALT-NICKEL OXIDES IN SILICA MATRIX

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ROOHI AZAM; FARSI HOSSEIN; MOGHIMINIA SHOKUFE

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Seminar Paper

Paper Information

Seminar: IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR
Year:2014 | Issue:11

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Title

SYNTHESIS AND INVESTIGATION OF NANOSTRUCTURED MIXED COBALT-NICKEL OXIDES IN SILICA MATRIX

Author(s)

ROOHI AZAM | FARSI HOSSEIN | MOGHIMINIA SHOKUFE | Issue Writer Certificate

Keywords

NANOCOMPOSITE

SILICA MATRIX

SUPERCAPACITOR

NICKEL OXIDE

COBALT OXIDE

Abstract

SUPER CAPACITORS CAN BE A SUITABLE RESPONSE TO ACCRUING DEMAND TO THE CLEAN ENERGY TECHNOLOGY BECAUSE OF THEIR HIGHER ENERGY DENSITIES COMPARED TO CONVENTIONAL CAPACITORS AND THEIR HIGHER POWER DENSITIES AND CYCLE LIFE COMPARED TO BATTERIES [1]. THEREFORE, THERE ARE SEVERAL TRENDS TO FIND APPROPRIATE MATERIALS FOR MAKING SUPERCAPACITORS’ ELECTRODES, WHICH SHOULD ILLUSTRATE A REVERSIBLE BEHAVIOR AND NONZERO CURRENT. NANO COMPOSITES, A COMBINATION OF NANO-DIMENSIONAL PHASES WITH DISTINCT DIFFERENCES IN STRUCTURE, CHEMISTRY AND PROPERTIES, CAN BE THE GOOD CANDIDATE FOR THIS PURPOSE. IN THIS STUDY, WE HAVE PREPARED A NANOCOMPOSITE CONTAINING OF NANOSTRUCTURED NICKELOXIDE AND COBALT OXIDE IN SILICA MEDIA BY SOL-GEL METHOD [2]. NICKEL NITRATE, COBALT NITRATE AND TETRAETHYLORTHOSILICATE IN MOLAR RATIO OF NICKEL TO COBALT SALTS OF 0, 0.35, 0.5, 0.65 AND 1 WERE DISSOLVED IN A SOLUTIONS OF ACETYL ACETONE, ETHANOL AND ETHYLENE GLYCOL. ONE DROP OF CONCENTRATED NITRIC ACID WAS TO THE REACTION MIXTURE AS THE CATALYST OF PREPARATION OF NICKEL OXIDE AND COBALT OXIDE PRECURSOR. THEN, SOL WAS PREPARED BY PUTTING THE MIXTURE IN A 70OC OVEN FOR 10 HOURS. THEN THE REACTION MIXTURE TRANSFERRED TO AN ELECTRICAL FURNACE WHICH ITS TEMPERATURE WAS ROSE TO 550OC FOR 5 HOURS. THE PREPARED NANOCOMPOSITES HAVE DIFFERENT COLORS FROM PURPLE TO BLACK DEPENDS TO THE RATIO OF NICKEL OXIDE TO COBALT OXIDE RATIO. THE CRYSTAL STRUCTURE AND MORPHOLOGY OF THE PREPARED MATERIALS WERE CERTIFIED BY XRD, SEM AND TEM. THEN, THE CAPACITIVE BEHAVIOUR OF THE PREPARED NANOCOMPOSITES WAS STUDIED BY CYCLIC VOLTAMMETRY STUDIES USING A STANDARD THREE-ELECTRODE CONSISTING OF AN AG/AGCL REFERENCE ELECTRODE, A PLATINUM GRID AUXILIARY ELECTRODE AND A CARBON PASTE WORKING ELECTRODE CONTAINING OF GRAPHITE + THE NANOCOMPOSITES POWDER IN A SOLUTION OF 1 M KOH AND THE EFFECT OF CHEMICAL COMPOSITION OF MIXED OXIDE WAS INVESTIGATED.

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APA: Copy

ROOHI, AZAM, FARSI, HOSSEIN, & MOGHIMINIA, SHOKUFE. (2014). SYNTHESIS AND INVESTIGATION OF NANOSTRUCTURED MIXED COBALT-NICKEL OXIDES IN SILICA MATRIX. IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. SID. https://sid.ir/paper/912138/en

Vancouver: Copy

ROOHI AZAM, FARSI HOSSEIN, MOGHIMINIA SHOKUFE. SYNTHESIS AND INVESTIGATION OF NANOSTRUCTURED MIXED COBALT-NICKEL OXIDES IN SILICA MATRIX. 2014. Available from: https://sid.ir/paper/912138/en

IEEE: Copy

AZAM ROOHI, HOSSEIN FARSI, and SHOKUFE MOGHIMINIA, “SYNTHESIS AND INVESTIGATION OF NANOSTRUCTURED MIXED COBALT-NICKEL OXIDES IN SILICA MATRIX,” presented at the IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. 2014, [Online]. Available: https://sid.ir/paper/912138/en

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