Both batch-to-batch(B2 B)and roll-to-roll(R2 R)processes can be used for mass production of graphene films.Because of the simplicity of equipment,the B2 B process is more commonly used in laboratory research.In contra...Both batch-to-batch(B2 B)and roll-to-roll(R2 R)processes can be used for mass production of graphene films.Because of the simplicity of equipment,the B2 B process is more commonly used in laboratory research.In contrast,the R2 R process is more industrially preferred because it is easier to automate and more compatible with the subsequent transfer process.Up to now,the research on R2 R process has mainly focused on the design of the reactor or the loading configuration,but the in-depth understanding on the growth kinetics is lack.In this paper,we investigated the evolution of graphene growth and revealed that the graphene domain density grown by the R2 R process was larger than that by the B2 B process with the same reaction parameters,which was attributed to different reaction profiles between the two processes.Furthermore,the defective graphene could be healed with elongated reaction time.With the optimized R2 R process,graphene films with quality comparable to those grown by conventional B2 B process could be achieved.Our research will promote the development of the mass-production technique for graphene films.展开更多
基金supported by the National Natural Science Foundation of China(51772043,51802036)Shenzhen Science and Technology Program((2021)105)。
文摘Both batch-to-batch(B2 B)and roll-to-roll(R2 R)processes can be used for mass production of graphene films.Because of the simplicity of equipment,the B2 B process is more commonly used in laboratory research.In contrast,the R2 R process is more industrially preferred because it is easier to automate and more compatible with the subsequent transfer process.Up to now,the research on R2 R process has mainly focused on the design of the reactor or the loading configuration,but the in-depth understanding on the growth kinetics is lack.In this paper,we investigated the evolution of graphene growth and revealed that the graphene domain density grown by the R2 R process was larger than that by the B2 B process with the same reaction parameters,which was attributed to different reaction profiles between the two processes.Furthermore,the defective graphene could be healed with elongated reaction time.With the optimized R2 R process,graphene films with quality comparable to those grown by conventional B2 B process could be achieved.Our research will promote the development of the mass-production technique for graphene films.
