Graphene Nanocomposites for Enhanced Lithium-Ion Battery Performance

Lithium-ion batteries (LIBs) are pivotal in contemporary energy storage, serving a wide array of applications including portable devices, electric vehicles (EVs), and renewable energy grids. Lithium-ion batteries (LIBs) are favoured for energy storage due to their greater energy density, extended cycle life, and lightweight construction, surpassing older chemistries such as lead-acid and nickel-cadmium batteries. Nevertheless, the increasing need for high-performance applications reveals substantial problems posed by the intrinsic constraints of LIB technology, especially regarding energy density, cycle stability, and overall efficiency. The limitations mostly arise from the materials employed in lithium-ion battery electrodes and electrolytes, such as graphite, which put theoretical restrictions on energy storage capacity. To tackle these issues, researchers are investigating innovative materials and hybrid designs, with graphene-based nanocomposites seeming as a potential option. Graphene, a two-dimensional carbon allotrope, possesses distinctive characteristics such as superior electrical conductivity, remarkable surface area, and outstanding mechanical strength. These attributes allow graphene to augment ion and electron transport, bolster structural integrity, and alleviate problems such as active material degradation and volume expansion during charge-discharge cycles—crucial aspects influencing the durability and efficacy of lithium-ion batteries (LIBs). This study examines the capability of graphene-based nanocomposites to address the shortcomings of conventional lithium-ion battery technology. This study examines how these materials may markedly improve energy density and cycle stability, the mechanisms responsible for their exceptional performance, and the obstacles that persist in attaining broad use. This paper provides a thorough review of graphene’s contribution to the evolution of lithium-ion battery technology, aiming to enhance the efficiency, s