Coke powder heat-treated with boron oxide using an Acheson furnace for lithium battery anodes

Properties of graphitized boron-doped coal-based coke powders as anode for lithium-ion batteries

“…However, the changing trend of XRD parameters are not constant, with further increase of boron added to 10.0 wt.%, the d 002 value finally increase dramatically to 0.3377 nm larger than 0.3367 nm the d 002 value of 0.0B26. This result is in good agreement with previous reports [17][18][19][20].…”

“…3a shows that as the increases of the graphite transition temperatures, both the reversible capacities and coulombic efficiencies of the 5.0 wt.% B doped ones have different degrees of improve. The tendency was the same as that for other graphitizable carbon [18,19]. Moreover, Fig.…”

“…It was reported that there is linearity between the reversible capacity and the crystalline parameters of anode materials [20]. The deviation is due to the difference of overpotential, which depends on the amount of doped boron and the residual compound remaining as B 4 C, which does not contribute to the electrochemical reaction [18,[21][22][23][24]. Unlike this, the coulombic efficiencies of boron-doped coal-based coke powders are comparable as that of 0.0B26, 2.5B26, 5.0B26, 7.5B26 and 10.0B26 are 75.90%, 75.39%, 78.55%, 76.86% and 77.0%, respectively.…”

“…As the substituted boron atom acts as an electron acceptor, the presence of boron should be beneficial for lithium intercalation/deintercalation behavior of the samples, while B 4 C is not an active material for lithium intercalation [18,[22][23][24], thus a parallel decrease of the reversible capacities should be at first expected. Therefore, the highest reversible capacity was obtained by 2.5B26 because of the lowest B 4 C content.…”

Roll-to-Roll Scale Fabrication of High-Performance Graphene-Assembled Film Cathode Current Collectors for Lithium-Ion Batteries

“…Toward the crucial improvement of the overall performance and the promotion of the practical application of GF in LIBs, a commercially economical and efficient Acheson graphitization process is innovatively used for graphitization. The Acheson graphitization is a centralized processing method that is commonly involved in the fabrication of graphite anode materials for LIBs. , During such a process, the products being treated can be graphitized at a higher temperature than conventional furnaces, giving rise to greater electrical and thermal conductivities of the obtained products. Additionally, the centralized processing method can greatly reduce the total cost and is one of the most effective means to realize economic value.…”