ONE-DIMENSIONAL MANGANESE DIOXIDE (MNO2) NANOSTRUCTURES SUCH AS NANORODS, NANOWIRES, AND NANOFIBERS HAVE GENERATED INTENSE RESEARCH INTERESTS OVER THE PAST RECENT YEARS DUE TO THEIR SUPERIOR OPTICAL, ELECTRICAL, CATALYTIC, MAGNETIC AND ELECTROCHEMICAL PROPERTIES [1]. SUCH MANGANESE DIOXIDE NANOSTRUCTURES ARE OF CONSIDERABLE IMPORTANCE IN TECHNOLOGICAL APPLICATIONS AND HAVE BEEN INTENSIVELY INVESTIGATED AS PROMISING ELECTRODE MATERIALS IN PRIMARY/SECONDARY BATTERIES AND ELECTROCHEMICAL CAPACITORS DUE TO THEIR EXCELLENT ELECTROCHEMICAL PROPERTIES, LOW-COST, ENVIRONMENTALLY BENIGN, AND EASE OF PREPARATION [2]. VARIOUS APPROACHES HAVE BEEN USED TO FABRICATE MANGANESE DIOXIDE, SUCH AS SELF-REACTING MICROEMULSION, PRECIPITATION, ROOM-TEMPERATURE SOLID REACTION, SONOCHEMICAL AND Hydrothermal METHODS [3]. THE Hydrothermal METHOD IS A POWERFUL SYNTHESIS APPROACH FOR SYNTHESIZING VARIOUS FORMS OF MANGANESE OXIDES AND AFFORDS VARIOUS ADVANTAGEOUS FEATURES INCLUDING THE USE OF MILD SYNTHESIS. IN THIS WORK, NANO-SIZED MANGANESE OXIDE WAS SYNTHESIZED USING HNO3 AND KMNO4 IN THE PRESENCE OF POLYETHYLENE GLYCOL AS A SURFACTANT UNDER Hydrothermal CONDITION. X-RAY DIFFRACTION (XRD) AND SCANNING ELECTRON MICROSCOPE (SEM) WERE USED TO CHARACTERIZE THE STRUCTURE AND MORPHOLOGY OF SYNTHESIZED POWDER.