A nanocrystalline structured NiO/MnO2@nitrogen-doped graphene oxide hybrid nanocomposite for high performance supercapacitors

2017 ◽  
Vol 41 (24) ◽  
pp. 15517-15527 ◽  
Author(s):  
Sivalingam Ramesh ◽  
K. Karuppasamy ◽  
Sabeur Msolli ◽  
Hyun-Seok Kim ◽  
Heung Soo Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Current Density ◽  
High Performance ◽  
Composite Electrode ◽  
Cyclic Stability ◽  
Hybrid Nanocomposite ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
A Current

A nanocrystalline NiO@MnO2/NGO hybrid composite electrode showed specific capacitance of 1490 Fg−1 at a current density of 0.5 Ag−1 and retains 98% up to 2000 cycles indicating its good cyclic stability.

High Reversible Capacity of Nitrogen-Doped Graphene as an Anode Material for Lithium-Ion Batteries

2014 ◽  
Vol 1070-1072 ◽  
pp. 459-464
Author(s):  
Chang Jing Fu ◽  
Shuang Li ◽  
Qian Wang
Keyword(s):  
Graphene Oxide ◽  
Electron Microscope ◽  
Lithium Ion Batteries ◽  
Current Density ◽  
Lithium Ion ◽  
X Ray ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
A Current

Nitrogen-doped graphene (N-rGO) was synthesized in the process of preparation of reduced graphene oxide from the expanded graphite through the improved Hummers’ method. The morphology, structure and composition of nitrogen-doped graphene oxide (GO) and N-rGO were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The nitrogen content of N-rGO was approximately 5 at.%. The electrochemical performances of N-rGO as anode materials for lithium-ion batteries were evaluated in coin-type cells versus metallic lithium. Results showed that the obtained N-rGO exhibited a higher reversible specific capacity of 519 mAh g-1 at a current density of 100 mA⋅g-1 and 207.5 mAh⋅g-1 at a current density of 2000 mA⋅g-1. The excellent cycling stability and high-rate capability of N-rGO as anodes of lithium-ion battery were attributed to the large number of surface defects caused by the nitrogen doping, which facilitates the fast transport of Li-ion and electron on the interface of electrolyte/electrode.

Synthesis of nitrogen-doped reduced graphene oxide directly from nitrogen-doped graphene oxide as a high-performance lithium ion battery anode

RSC Advances ◽  
2014 ◽  
Vol 4 (80) ◽  
pp. 42412-42417 ◽  
Author(s):  
Meng Du ◽  
Jing Sun ◽  
Jie Chang ◽  
Fan Yang ◽  
Liangjing Shi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Nitrogen Doped ◽  
Reduced Graphene ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Storage Properties

A new route has been developed to synthesize nitrogen-doped reduced graphene oxide (N-RGO) with excellent lithium storage properties.

Facile Synthesis of Co3O4/Nitrogen-Doped Graphene Composite and their Electrochemical Performances

2015 ◽  
Vol 1120-1121 ◽  
pp. 347-351
Author(s):  
Wen Xiao Bao ◽  
Qian Long Zhou ◽  
Tian Yu Zhang ◽  
Wei Long Li ◽  
Zhao Yu Ren
Keyword(s):  
Current Density ◽  
Electrode Materials ◽  
Electrochemical Performances ◽  
Cycle Stability ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Graphene Composite ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
A Current

Co3O4/Nitrogen-doped graphene (Co3O4/NG) composites were synthesized by a simple hydrothermal method. The Co3O4/NG composites show a better electrochemical performance than the Co3O4/graphene (Co3O4/G) composite. The specific capacitance of Co3O4/NG electrode is 428 F/g (290 F/g for Co3O4/G electrode) at a current density of 1 A/g. As the current density was increased from 1 to 8 A/g, the capacitance of Co3O4/NG still retained 57%, significantly larger than that of Co3O4/G (40%). Moreover, over 94% of the original capacitance was maintained after 500 cycles (72% for Co3O4/G electrode), indicating a good cycle stability of Co3O4/NG electrode materials.

Synthesis of nitrogen doped graphene from graphene oxide within an ammonia flame for high performance supercapacitors

RSC Advances ◽  
2014 ◽  
Vol 4 (98) ◽  
pp. 55394-55399 ◽  
Author(s):  
Delong Li ◽  
Chaozhi Yu ◽  
Miaosheng Wang ◽  
Yupeng Zhang ◽  
Chunxu Pan
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

3D Macroporous Nitrogen-doped Graphene Frameworks for High-Performance Supercapacitors

2014 ◽  
Vol 1644 ◽  
Author(s):  
Pingping Yu ◽  
Xin Zhao ◽  
Yingzhi Li ◽  
Qinghua Zhang
Keyword(s):  
Graphene Oxide ◽  
Specific Capacitance ◽  
High Performance ◽  
High Specific Capacitance ◽  
Cycle Life ◽  
Supercapacitor Application ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Rate Capacity

ABSTRACTA novel type of nitrogen-doped hierarchically 3D macroporous CMG films electrode (NCMG) was prepared through a facile ultrafiltration method using graphene oxide (GO) and polystyrene (PS) as precursors, then annealed in N2 atmosphere at 1000°. This NCMG electrode exhibits high specific capacitance (150 F g-1), excellent rate capacity and good cycle life (98% of initial capacitance), which can be a good candidate for supercapacitor application.

Bimetallic Mixed Metal Oxide (CuO/NiO) In Fusion with Nitrogen-doped Graphene Oxide: An Alternate Approach for Developing Potential Biocarrier

2021 ◽  
pp. 105781
Author(s):  
Periasamy Anbu ◽  
Subash C.B. Gopinath ◽  
Kandasamy Saravanakumar ◽  
Sekar Vijayakumar ◽  
Santheraleka Ramanathan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Mixed Metal Oxide ◽  
Mixed Metal ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene
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