Carbon nanotubes (CNT) have attracted the fancy of many scientists worldwide. The small dimensions, strength and the remarkable physical properties of these structures make them a very unique material with a whole range of promising applications. In this review we describe the construction of the carbon nanotube paste electrode and discuss some of the electrochemical applications of nanotubes including: (i) batteries; (ii) electric double-layer capacitors; (iii) fuel cells; (iv) solar cells; (v) electrodeposition on its surface and (vi) electroanalytical sensing.