After adding graphene material to lithium-ion batteries, charging, discharging, and conductivity are more than 10 times faster than the original batteries. They can be fast charged with 110-240V household electricity (fully charged in 15-25 minutes), reducing the causes of heat generation and aging-related fires, and increasing battery life by several times.
However, there are two main directions for integrating graphene technology into the battery industry: one is as a conductive additive, and the other is as a negative electrode material.
If graphene is used as an anode material, its high cost will be a significant barrier. Analysis suggests that if graphene is used as the main anode material in power batteries, the cost of electric vehicles will be extremely high; however, if it is used as an additive, the cost will be acceptable.
However, if used as a conductive additive, it is still essentially a lithium battery. Furthermore, graphene cannot achieve superconductivity at room temperature, and compared to cheaper additives, it does not offer much advantage.
Furthermore, graphene batteries are not a new technology; they have been validated in laboratories for many years. Theoretically, they can help improve battery charging acceptance, but their impact on other performance aspects is limited. Moreover, the graphene manufacturing process is more complex, and its cost is much higher than that of conventional graphite, and even the widely favored silicon anode. Ensuring the stability of graphene across multiple batches is also more difficult.
Solving problems such as low-cost, high-quality graphene preparation and graphene blocking lithium-ion channels has become a crucial issue for the commercialization of graphene batteries. Furthermore, many challenges remain before they can be successfully implemented in mass-produced vehicles.
