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Growth of Carbon Nanotubes on 3D Nitrogen Doped Reduced Graphene Oxide for Lithium Ion Battery Anode
강잉보,박호석 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
The growth of carbon nanotubes (CNTs) on three-dimensional nitrogen doped reduced graphene oxide (NG) and formation of nitrogenincorporated reduced graphene oxide/iron oxide (CNT/NG-Fe) by in-situ formation of iron oxide has been successfully realized via microwave synthesis using NG and iron precursor. Compared with the RGO, the CNTs can be easily grown on the NG due to the good conductivity introduced by the presence of pyrrolic and pyridinic centers. As shown in the electrochemical performances, the discharge capacity of the 3D CNT/NG-Fe is 1208 mAh g-1 at 50 mA g-1 which is greater than 890 and 820 mAh g-1 of the CNT/G-Fe and NG. After 130 cycles at 100 mA g-1, the capacity gradually increases to 1020 mAh g-1 with the Coulombic efficiency of > 98.5 %. The enhanced capacity, rate capability and cyclic stability of the CNT/NG-Fe can be attributed to doping effect of N-configuration and unique hierarchical structure consisting of the dense CNT branches on 3D macroporous continuity.
강잉보,박호석 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
The carbon nanotubes (CNT) branches on three-dimensional nitrogen doped graphene oxide (NG) has been successfully synthesized via microwave self-assembly method. Compared with the pristine RGO, the CNTs can be more readily and uniformly grown on the 3D NG surfaces due to the good electronic conductivity by N-type configura-tions. As demonstrated by the electrochemical performances, the discharge capacity of the 3D CNT/NG-Fe is 1208 mAh g-1 at 50 mA g-1 which is greater than 890 and 820 mAh g-1 of the CNT/G-Fe and NG. After 130 cycles at 100 mA g-1, the capacity gradually increases to 1020 mAh g-1 with the Coulombic efficiency of > 98.5 % due to the hierarchical structure and formation of electrochemical active site by nitrogen doping.
강잉보,박호석 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
The growth of carbon nanotubes (CNTs) on three-dimensional nitrogen doped reduced graphene oxide (NG) and formation of nitrogen-incorporated reduced graphene oxide/iron oxide (CNT/NG-Fe) by in-situ formation of iron oxide has been successfully realized via microwave synthesis using NG and iron precursor.Compared with the RGO, the CNTs can be easily grown on the NG due to the good conductivity introduced by the presence of pyrrolic and pyridinic centers. As shown in the electrochemical performances, the discharge capacity of the 3D CNT/NG-Fe is 1208 mAh g-1 at 50 mA g-1 which is greater than 890 and 820 mAh g-1 of the CNT/G-Fe and NG. After 130 cycles at 100 mA g-1, the capacity gradually increases to 1020 mAh g-1 with the Coulombic efficiency of > 98.5 %. The enhanced capacity, rate capability and cyclic stability of the CNT/NG-Fe can be attributed to doping effect of N-configuration and unique hierarchical structure consisting of the dense CNT branches on 3D macroporous continuity.
강잉보,박호석 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
The carbon nanotubes (CNTs) branched on three-dimensional (3D) macroporous, nitrogen-incorporated reduced graphene oxide (NG)/iron oxide (CNT/NG-Fe) hybrid architectures have been prepared via an ice templating and microwave synthesis. Compared with the pristine RGO, the CNTs can be more readily and uniformly grown on the 3D NG surfaces due to the good electronic conductivity by N-type configurations. As demonstrated by the electrochemical performances, the discharge capacity of the 3D CNT/NG-Fe is 1208 mAh g<sup>-1</sup> at 50 mA g<sup>-1</sup> which is greater than 890 and 820 mAh g<sup>-1</sup> of the CNT/G-Fe and NG. After 130 cycles at 100 mA g<sup>-1</sup>, the capacity gradually increases to 1020 mAh g<sup>-1</sup> with the Coulombic efficiency of > 98.5 %. The enhanced capacity, rate capability and cyclic stability of the CNT/NG-Fe are associated with the doping effect of N-configuration and unique hierarchical structure consisting of the dense CNT branches on 3D macroporous continuity.