Abstract
Aligned carbon nanotube (A-CNT) has been widely studied due to their extensive potential applications. Despite the fact that catalyst chemical vapor deposition (C-CVD) process influences A-CNT growth, catalyst and catalyst-support thin films preparation is also another major key role. Challenges and future perspectives in the A-CNT growth will also be discussed. Carbon nanomaterial especially CNT possesses remarkably significant achievements towards the development of sustainable energy storage applications. As compared to the entangled CNTs, aligned or well organized CNTs have advantages in specific surface area and ion accessibility in which, more electrolyte ions can access to CNT surfaces for better charge storage performance. CVD known as the most popular technique to produce CNTs enables the use of various substrates and CNT can grow in a variety of forms, such as powder, films, aligned or entangled. Also, CVD is a simple and economic technique, and has good controllability of direction and CNT dimension. High purity of as-grown CNTs is also another beauty of the CVD technique. The current trend and performance of devices utilizing CNTs as electrode material is also extensively discussed.
