POLYPYRROLE NANOWIRE CAPABLE OF IMPROVING THE LIFETIME PROPERTY OF AN ELECTRODE BY APPLYING TO A NEGATIVE ELECTRODE MATERIAL OF A LITHIUM ION SECONDARY BATTERY, AND A PRODUCTION METHOD THEREOF

摘要

PURPOSE: A polypyrrole nanowire is provided to offer excellent surface and structure intensity by forming a mash type structure.;CONSTITUTION: A polypyrrole nanowire is connected to each other to form a mash type structure. The polypyrrole nanowire contains a tin oxide particle. The tin oxide particle is combined to the inside and the surface of the polypyrrole nanowire forming the mash type structure. The polypyrrole nanowire has the cross-sectional diameter of 60-200 nm, and the average diameter of the tin oxide particle is 2-30 nm. A production method of the polypyrrole nanowire comprises a step of applying negative pressure to an aqueous solution including nitric acid, sodium nitrate, and pyrrole. The aqueous solution contains 0.2-1.6 M of nitric acid, 0.1-1 M of sodium nitrate, and 0.1005 M of pyrrole. The negative pressure is applied in -0.6-(-1.0) VSCE for 5-20 minutes. The temperature of the aqueous solution is maintained at 15-30°C. The aqueous solution additionally contains 0.01-0.1 M of stannic salt.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Reduction electrode : Cu foil; (BB) Oxidation electrode : Pt; (CC) Applied voltage: -0.6V_SCE ~ -1.0V_SCE; (DD) Electrodeposition time: 5 min-15 min; (EE) Solution temperature: 15°C-30°C