Hierarchical Porous Graphene/Ni Foam Composite with High Performances in Energy Storage Prepared by Flame Reduction of Graphene Oxide

Yang, Jing; Li, Xiaofeng; Han, Shuang; Huang, Ruling; Wang, Qianqian; Yu, Zhong‐Zhen

doi:10.1002/celc.201700405

Cited by 15 publications

(11 citation statements)

References 63 publications

(41 reference statements)

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“…To solve these problems, it is necessary to develop carbon materials with better performance. As far as we know, carbon matrix such as graphene, carbon nanotube, carbon nanofiber, carbon aerogel and activated carbon materials have been extensively studied. These materials typically exhibit superior electrochemical performance in lithium‐ion batteries, sodium‐ion batteries, and supercapacitors .…”

Section: Introductionmentioning

confidence: 99%

Dual‐Templating Approaches to Soybeans Milk‐Derived Hierarchically Porous Heteroatom‐Doped Carbon Materials for Lithium‐Ion Batteries

Peng

Han

et al. 2020

ChemistryOpen

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Biomass derived carbon materials are widely available, cheap and abundant resources. The application of these materials as electrodes for rechargeable batteries shows great promise. To further explore their applications in energy storage fields, the structural design of these materials has been investigated. Hierarchical porous heteroatom-doped carbon materials (HPHCs) with open three-dimensional (3D) nanostructure have been considered as highly efficient energy storage materials. In this work, biomass soybean milk is chosen as the precursor to construct N, O co-doped interconnected 3D porous carbon framework via two approaches by using soluble salts (NaCl/ Na 2 CO 3 and ZnCl 2 /Mg 5 (OH) 2 (CO 3 ) 4 , respectively) as hard templates. The electrochemical results reveal that these structures were able to provide a stable cycling performance (710 mAh · g À 1 at 0.1 A · g À 1 after 300 cycles for HPHC-a, and 610 mAh · g À 1 at 0.1 A · g À 1 after 200 cycles for HPHC-b) in Li-ion battery and Na-ion storage (210 mAh · g À 1 at 0.1 A · g À 1 after 900 cycles for HPHC-a) as anodes materials, respectively. Further comparative studies showed that these improvements in HPHCa performance were mainly due to the honeycomb-like structure containing graphene-like nanosheets and high nitrogen content in the porous structures. This work provides new approaches for the preparation of hierarchically structured heteroatom-doped carbon materials by pyrolysis of other biomass precursors and promotes the applications of carbon materials in energy storage fields.

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Section: Introductionmentioning

confidence: 99%

Dual‐Templating Approaches to Soybeans Milk‐Derived Hierarchically Porous Heteroatom‐Doped Carbon Materials for Lithium‐Ion Batteries

Peng

Han

et al. 2020

ChemistryOpen

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“…Thus, the capacitance of carbon‐based SCs mainly depends upon the specific surface area that accessible to the electrolyte ions. But even at extremely large surface areas (up to 3000 m 2 g −1 ), their capacitances are still relatively low (typically 150–300 F g −1 ),, owing to poor electronic conductivity and insufficient/slow ionic diffusion within the long and tortuous micropores, thus severely restricts its application in the high‐power energy storage devices. Worse still, the capacitive performance usually declines sharply with increasing mass loading, and the rate capability is also seriously limited.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of Highly Conductive Nitrogen‐Doped Hollow Carbon Microtubes Derived from Willow Catkin for Supercapacitor Applications

et al. 2019

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The rational design of carbon materials with high electrical conductivity, low tortuosity, large specific surface area, and sufficient heteroatom doping for high-performance supercapacitor application is highly desired but remains as a major challenge. Herein, by templating the natural microtubular and thin-walled structure of willow catkin, a highly conductive nitrogen-doped hollow carbon microtube material was synthesized through an integrated procedure including polymerization, pyrolysis, and activation. Robust N-doped crosslinked graphene was grafted on the internal and external walls of carbonized hollow catkin to form a sandwich structure of the derived carbon. The obtained carbon microtubes exhibit a large specific surface area (2608 m 2 g À 1 ), short and unimpeded ion-diffusion paths, high-level heteroatom doping (O: 12.5 at %, N: 3.4 at %), and excellent electrical conductivity (128 S m À 1 ). Benefitting from its desirable textural properties and favorable elemental composition, the derived electrode, without the addition of conductive additives, delivers impressive capacitance values of 408 F g À 1 (0.5 A g À 1 ) in 6 M KOH electrolyte and 420.8 F g À 1 (1 A g À 1 ) in 1 M H 2 SO 4 , as well as an outstanding rate capability and excellent cycling stability. In addition, the assembled symmetric supercapacitor displays an ultrahigh energy density of 27.3 Wh kg À 1 at 182 W kg À 1 in 1 M Na 2 SO 4 electrolyte. These advanced characteristics ensure the carbon microtubes hold great promise for energy storage/conversion applications.

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“…Currently, carbon‐based materials, such as carbon aerogels,, graphene, carbon nanotubes, carbon nanofibers and activated carbon, have been widely studied as electrode materials in energy storage devices. Among them, activated carbon has been widely applied in SCs and LIBs because of their wide availability, relatively well‐developed porosity and favorable surface area, which are important properties for increasing the capacity of energy storage devices .…”

Section: Introductionmentioning

confidence: 99%

Nitrogen, Sulfur, Phosphorous Co‐doped Interconnected Porous Carbon Nanosheets with High Defect Density for Enhancing Supercapacitor and Lithium‐Ion Battery Properties

Wang

Dang

et al. 2018

ChemElectroChem

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Porous carbon nanosheets with open 2D nanostructure have been considered a desirable and high‐efficient energy‐storage material. Herein, N, S, P co‐doped interconnected porous carbon nanosheets (CPCNs) with high defect density and open 2D ultrathin nanostructure are prepared by using a cork‐shaped soybean aerogel as carbon source. A reasonable design of the preparation technology controls the formation of the distinctive and ordered structure of intermediates during the synthetic process. The as‐prepared CPCN material is made of interconnected nanosheets with a thickness of 4.9 nm and have a maximum N‐dopant content of 5.83 at. % and a high specific surface area of 3586 m2 g−1. Due to the synergistic effects of the features, the CPCN electrode for supercapacitors has a high capacitance of 427 F g−1 with a long cycling stability of 97.42 % after 10 000 cycles. For lithium‐ion batteries, the CPCN material also exhibits an excellent capacity of 1220 mAh g−1 at 100 mA g−1 with a high rate capability and cycling stability. Moreover, a scenario through using CPCN to enhance the electrochemical performance of nano‐inorganic material proves a high scalability in the application for the products.

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Hierarchical Porous Graphene/Ni Foam Composite with High Performances in Energy Storage Prepared by Flame Reduction of Graphene Oxide

Cited by 15 publications

References 63 publications

Dual‐Templating Approaches to Soybeans Milk‐Derived Hierarchically Porous Heteroatom‐Doped Carbon Materials for Lithium‐Ion Batteries

Dual‐Templating Approaches to Soybeans Milk‐Derived Hierarchically Porous Heteroatom‐Doped Carbon Materials for Lithium‐Ion Batteries

Rational Design of Highly Conductive Nitrogen‐Doped Hollow Carbon Microtubes Derived from Willow Catkin for Supercapacitor Applications

Nitrogen, Sulfur, Phosphorous Co‐doped Interconnected Porous Carbon Nanosheets with High Defect Density for Enhancing Supercapacitor and Lithium‐Ion Battery Properties

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