Abstract

Carbon nanotubes (CNTs), CNT hybrid nanocomposites, and nanotechnology may play an essential role in revolutionizing the device applications for energy conversion and storage. This chapter provides an overview on the development of CNT applications in energy conversion and storage. The contents of this chapter include (1) an introduction of integrated CNTs into solar cells and thermocells to increase the energy conversion efficiency; (2) a summary on the discovery of nitrogen-doped vertically aligned CNTs (VA-CNTs) as a highly active cathode in fuel cells, Li-ion batteries, and supercapacitors and vertically aligned nitrogen-doped coral-like carbon fiber (VA-NCCF) arrays as a high-performance air cathode in Li-air batteries; and (3) a summary on CNT nanocomposites that exhibited high energy capacity in lithium-ion batteries and high specific capacitance in electrochemical supercapacitors.

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