| 초록 |
Carbon nanomaterials-based interlayers are developed to efficiently trap polysulfides in Lithium-Sulfur batteries. However, high thermal/chemical energy requirements and lengthy period of time consumption to produce such materials remain challenges. Here, a fast and scalable laser-induced photothermal method to produce graphene-based battery interlayer from commercialized paper is demonstrated. Multiple laser photothermal irradiation on fire-retardant treated paper enables to obtain highly porous graphitic carbon membrane. Our laser induced graphene-based battery interlayer physically absorbs and traps polysulfides, and coulombically repulse ions; it enables high capacity of 973 mAhg-1 at 0.5 C with low-capacity decay rate, low self-discharge rate, and high-capacity retention. Our paper-based laser manufacturing of the porous graphitic carbon interlayer has future potential for cost-reduction in high-performance energy storing systems. |
