Two-Dimensional Planar Supercapacitor Based on Zinc Oxide/ Manganese Oxide Core/Shell Nano-architecture
RIS ID
115436
Abstract
We report the fabrication and performance of zinc oxide core/manganese oxide shell (ZnO/MnO 2 ) three-dimensional nanostructured planar supercapacitor. In this particular fabrication, ZnO nanorods were grown over FTO substrate followed by the successive ionic layer adsorption and reaction (SILAR) deposition of MnO 2 nanostructure on ZnO nanorods. The quality of the ZnO/MnO 2 electrode was optimized by performing various cycles of SILAR deposition of MnO 2 layer over ZnO core. The electrode with 7 cycles of MnO 2 deposition demonstrated maximum electrochemical performance with area capacitance of 14 mF cm ¿2 and the same condition was utilized for the fabrication of a symmetric planar supercapacitor. This ZnO/MnO 2 3D architecture planar supercapacitor showed maximum area capacitance of 5 mF cm ¿2 in 1 M Na 2 SO 4 aqueous electrolyte with good energy density of 4.07 x 10 ¿7 Wh cm ¿2 and power density of 3.19 mW cm ¿2 . Moreover, this planar supercapacitor shows an excellent electrochemical performance with comparable long term cyclic stability.
Publication Details
Raj, C. Justin., Rajesh, M., Manikandan, R., Sim, J. Yong., Yu, K. Hyun., Park, S. Yeup., Song, J. Ho. & Kim, B. Chul. (2017). Two-Dimensional Planar Supercapacitor Based on Zinc Oxide/ Manganese Oxide Core/Shell Nano-architecture. Electrochimica Acta, 247 949-957.