Yeom, Da-Young Jeon, Woojin Tu, Nguyen Dien Kha Yeo, So Young Lee, Sang-Soo Sung, Bong June Chang, Hyejung Lim, Jung Ah Kim, Heesuk 2024-01-20T07:03:04Z 2024-01-20T07:03:04Z 2021-09-04 2015-05-05 2045-2322 https://pubs.kist.re.kr/handle/201004/125457 For the utilization of graphene in various energy storage and conversion applications, it must be synthesized in bulk with reliable and controllable electrical properties. Although nitrogen-doped graphene shows a high doping efficiency, its electrical properties can be easily affected by oxygen and water impurities from the environment. We here report that boron-doped graphene nanoplatelets with desirable electrical properties can be prepared by the simultaneous reduction and boron-doping of graphene oxide (GO) at a high annealing temperature. B-doped graphene nanoplatelets prepared at 1000 degrees C show a maximum boron concentration of 6.04 +/- 1.44 at %, which is the highest value among B-doped graphenes prepared using various methods. With well-mixed GO and g-B2O3 as the dopant, highly uniform doping is achieved for potentially gram-scale production. In addition, as a proof-of-concept, highly B-doped graphene nanoplatelets were used as an electrode of an electrochemical double-layer capacitor (EDLC) and showed an excellent specific capacitance value of 448 F/g in an aqueous electrolyte without additional conductive additives. We believe that B-doped graphene nanoplatelets can also be used in other applications such as electrocatalyst and nano-electronics because of their reliable and controllable electrical properties regardless of the outer environment. English NATURE PUBLISHING GROUP NITROGEN-DOPED GRAPHENE COVALENT ORGANIC POLYMERS CHEMICAL-VAPOR-DEPOSITION EFFICIENT ELECTROCATALYSTS MONOLAYER GRAPHENE FACILE PREPARATION CARBON NANOTUBES REDUCTION OXIDE FRAMEWORK High-concentration boron doping of graphene nanoplatelets by simple thermal annealing and their supercapacitive properties Article 10.1038/srep09817 1 SCIENTIFIC REPORTS, v.5 SCIENTIFIC REPORTS 5 scie scopus 000353904500001 2-s2.0-84929192285 Multidisciplinary Sciences Science & Technology - Other Topics Article NITROGEN-DOPED GRAPHENE COVALENT ORGANIC POLYMERS CHEMICAL-VAPOR-DEPOSITION EFFICIENT ELECTROCATALYSTS MONOLAYER GRAPHENE FACILE PREPARATION CARBON NANOTUBES REDUCTION OXIDE FRAMEWORK