Abstract
It has been a long-standing challenge to prepare graphene with green and efficient synthesis technique. In this work, we report a simple and cost-effective approach to fabricate few-layer graphene through the reaction between Mg melt and CO2 gas at conventional melting conditions. The results indicated that the as-fabricated graphene has high graphitization degree and small thickness. In addition, the reaction temperature has great impact on the quality of the as-fabricated graphene, and they possess relatively the best quality when prepared at 750 ℃. When serving as lithium storage materials, the as-fabricated graphene exhibits excellent rate capability and cycling performance with a reversible capacity of 130 m Ah g?1 after 1000 cycles at a current density of 1.0 A g?1. The porous graphene produced by removing nano-sized MgO particles contains numerous defects and C[dbnd]O groups, which could provide more adsorption sites for lithium storage. This study opens up an avenue to synthesize graphene from greenhouse gases. The as-fabricated graphene possesses great potential employed as lithium storage materials. Data availability: The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.
NSTL
Elsevier