Application of carbon nanotubes in lithium-ion batteries

Abstract

Battery demand as a power source has skyrocketed due to the electric car market’s explosive growth. Because of its high energy density, lack of memory effect, low self-discharge rate, environmental friendliness, and extended cycle life, lithium-ion batteries, or LIBs, are widely employed in electric cars, aircraft, and other sectors. However, the use of traditional carbon materials in LIBs has led to relatively low specific capacity, limited charging and discharging rates, and low first-time charging and discharging efficiencies Carbon nanotubes (CNTs), with their high electrical conductivity, excellent mechanical properties, and thermal conductivity, can bring higher capacity, better cycling stability, excellent thermal conductivity, as well as lightweight and flexibilization to LIBs. Therefore, this paper first introduces the basic properties of CNTs and their preparation methods. Then, their roles in the positive and negative electrodes of LIBs are discussed respectively. Finally, an outlook on the future development of LIBs is made. This has a reference value for the future development of LIBs.