“…2A, C1s peak of graphene is deconvoluted into three peaks located at 286.1 eV, 285.2 eV and 284.3 eV, which are assigned to CeO, sp 3 -C and sp 2 -C, respectively. For deconvoluted C1s peak of boron-doped graphene, a new peak located at 283.4 eV is observed, which can be assigned to CeB bond, indicating that boron atoms have already been bonded to carbon atoms [38]. Also, it can be observed that the ratio of sp 2 -C is considerably decreased from 74.98% for graphene to 53.29% for boron-doped graphene, which results from the boron doping into sp 2 -C network and is consistent with the Raman spectroscopy results.…”