An electrode comprising of graphene nanopowder inserted in an enclosed structure in anodic aluminium oxide coated with PANI by using low temperature hydrothermal process

Elements like C and its allotropes (Graphene) Sn, Al, Ge, and their compounds are commonly used anodic materials in Li-ion secondary batteries. Out of them Graphene is a promising anodic material for Li-ion batteries as it having high theoretical capacity of 4100 mAh/g as it formed Li4.4C. However, the formation of Li4.4C induces a large volume expansion in the electrode and leads to a rapid drop in capacity. To overcome this problem many experiments and theoretical efforts have been focused on enhancing structural stability of Graphene in electrode. Several methods have been also reported for the fabrication of three-dimensional electrode arrays. In this study, we report an improvement of the cycling performance of graphene nanopowder-based electrode. Graphene nanopowder was inserted and confined on the anodic aluminum oxide coated with polyaniline (PANI) by using a new method. It is confirmed from this study that cycling behavior of the graphene powder electrode can be significantly improved by using the method proposed in this study.