초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제117회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Supercapacitive performance of vanadium oxide nanostructure synthesized via simple co-precipitation technique

2016년 2월 24일 16시 38분 54초
ELEC.P-512 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 21일 (목요일) 11:00~12:30
저자 및
Ramu Manikandan, MURU GESAN RAJESH, 문미미, 유국현1,*
동국대학교 화학과, Korea
1한국원자력의학원 신개념치료기술개발 플랫폼구축사업단, Korea
Pseudocapacitance, a faradic redox process involving on the surface or near surface of the materials offers a high energy density at high charge-discharge rates. Generally metal oxide, metal hydroxide, metal sulfide and conducting polymer are used as pseudocapacitive materials for supercapacitor application. So far various metal oxides, such as RuO2, CoO, NiO and IrO2 have been reported to be used as pseudocapacitance electrode material. However, their prohibitive cost has motivated the search for alternative metal oxides. In this regard, TiO2, MnO2, V22O5 and SnO2 have emerged as a promising supercapacitor material because their low cost and their environment friendliness. Among this vanadium oxide has been recently attracted for pseudocapacitance electrode material due to its high theoretical capacitance and easy synthesis of stable layered structure. Moreover, the redox-activity of vanadium oxides with multiple oxidation states (V+5, V+4, V+3 and V+2) can effectively enhances the electrochemical properties for supercapacitor application. In this present work, we prepared vanadium oxide nanostructure by simple co-precipitation technique using VOSO4.xH2O and NaOH solution. Moreover, the effect of various mole concentrations of NaOH (0.5ml, 1ml and 10ml) solution on the vanadium oxide nanostructure was studied. The structural and morphological properties of vanadium oxide were studied using XRD, SEM and EDAX analysis. The electrochemical behavior of the vanadium oxide electrodes were investigated by means of cyclic voltammetry (CV), galvanostatic charge/discharge technique and electrochemical impedance spectroscopy in 1M Na2SO4 as an electrolyte. The vanadium oxide nanostructure based supercapacitor electrodes shows excellent electrochemical properties with comparable stability.