부산대학교 도서관

Abstract Understanding the electrical transport properties of individual nanostructures is of great importance to the construction of high-performance nanodevices. NiCo2O4 nanowires have been investigated widely as the electrodes in electrocatalysis, supercapacitors, and lithium batteries. However, the exact electrical transport mechanism of an individual NiCo2O4 nanowire is still ambiguous, which is an obstacle for improving the performance improvement of energy storage devices. In this work, NiCo2O4 nanowires were prepared successfully by thermal transformation from the CoNi-hydroxide precursors. The electrical transport properties of an individual NiCo2O4 nanowire and its temperature-dependent conduction mechanisms were studied in detail. The current-voltage characteristics showed that an ohmic conduction in a low electrical field ( 3025 V/cm). A semiconductive characteristic is found in the temperature-dependent conductivity in the NiCo2O4 nanowire; the electrical conduction mechanism at low temperature (T