A melamine-assisted chemical blowing synthesis of N-doped activated carbon sheets for supercapacitor application

Wang, Yiliang; Xuan, Huaqing; Lin, Gaoxin; Wang, Fan; Chen, Zhi; Dong, Xiaoping

doi:10.1016/j.jpowsour.2016.04.069

Cited by 196 publications

(89 citation statements)

References 51 publications

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“…[79][80][81][82][83] A lot of works have proven that the in situ doping is superior as it can enhance the N content and avoid the introduction of oxygen-bearing group. The NC materials can be prepared by the pyrolysis of a N-containing precursor, which is known as in situ doping, or by a lowtemperature postdoping process using carbon nanomaterials.…”

Section: Nitrogen-doped Carbonmentioning

confidence: 99%

Metal‐Organic Framework‐Derived Carbons for Battery Applications

Zheng

Jin

et al. 2018

Advanced Energy Materials

197

112

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batteries, sodium-selenium (Na-Se) batteries, Li-tellurium (Li-Te) batteries, and Na-S batteries) have their own distinctive applications due to their various characteristics. To explore new materials with high performance, large studies have been devoted to the development of nextgeneration batteries.Porous carbon (PC) materials possess many unique properties due to their large surface areas, high conductivity, large pore volumes, high thermal stability, and surface functionalities, [22][23][24] leading to their wide use in energy storage and conversion. Traditionally, PC can be obtained via various methods, such as the direct heat treatment of organic precursors, hard template or nanocast methods, and soft template methods. However, the production of PC from these methods cannot be scaled-up because of certain barriers (disordered structure with wide size distributions, complicated processes, etc.). [23,25,26] Metal-organic frameworks (MOFs) have drawn wide research interest as a novel class of porous materials that are crystalline materials consisting of metal ions and organic ligands. [4,21,[27][28][29][30][31] Since the report on the MOF-templated synthesis of PC in 2008, [32] a large number of studies have been reported on the use of MOFs as suitable precursors/templates for carbon synthesis. [22,26,[33][34][35] At present, a large number of studies indicate that zeolitic imidazolate framework-8 (ZIF-8), MOF-5, MIL-125 (Ti) (MIL = Materials of Institute Lavoisier), and ZIF-67 with excellent thermal stability and unique porous structures are the more commonly used MOF precursors (Scheme 1). [3,36,37] All of them, ZIF-8, possessing nitrogen-containing ligands, has high porosity and thermal stability. [38][39][40] MOF-5 possesses excellent thermal stability, high porosity, and so on. [41] MIL-125, an active photocatalyst, includes cyclic octamers of TiO 2 octahedra. [42,43] ZIF-67 has a tunable pore aperture, highly stable structure, and catalytic activity. [37,44,45] The above-mentioned MOFs have been widely used for gas adsorption, molecular separation, catalysis, batteries, supercapacitors, and so on. [13,14,33] Moreover, carbon hybrids containing nanostructured metal species (e.g., metal oxides (MOs)) are likely to form under in situ carbonization conditions. [46] Compared with the carbonaceous materials from conventional precursors, MOF-derived carbon materials have significant advantages with high specific surface areas, tailorable porosities, unique morphologies, and easy functionalization with other heteroatoms. [14,23,31] For example, Xu and co-workers [47] obtained 1D carbon nanorods via the pyrolysis The applications of carbon and carbon-based materials with high porosity, high surface area, and functionalities based on metal-organic framework precursors and/or templates have attracted significant research interest in recent years, particularly in the field of batteries. The chemical and physical properties of carbon and carbon-based materials obtained by the heat treatment of various metal-organic ...

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Section: Nitrogen-doped Carbonmentioning

confidence: 99%

Metal‐Organic Framework‐Derived Carbons for Battery Applications

Zheng

Jin

et al. 2018

Advanced Energy Materials

197

112

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“…In Figure a, there are two peaks for all samples. One peak is located at ≈1347 cm −1 ( D ‐band), which means that there is a disordered carbon structure . The other one is at 1588 cm −1 ( G ‐band), indicating an ordered graphite lattice.…”

Section: Resultsmentioning

confidence: 99%

Balancing Porosity and Oxygen‐Containing Functionalities of Hierarchically Porous Carbons for Enhanced Capacitive Supercapacitors

et al. 2019

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Herein, a strategy by balancing porosity and oxygen‐containing functionalities is successfully developed to efficiently modulate pore structures as well as relevant capacitive performance toward hierarchically porous carbon materials. It is revealed that the mass ratio of sodium citrate (producing porosity by a self‐template) and F‐127 (producing both porosity and pseudocapacitance) exerts a crucial role for achieving the aforementioned objective. In addition, when the mass ratio of sodium citrate to F‐127 reaches up to 1:1, the carbon sample delivers an excellent cycling stability of 98% within 10 000 cycles and the superior energy densities of 3.6 and 10.6 W h kg−1 when using 6 m KOH and 1 m Na2SO4 (voltage up to 1.8 V) as electrolytes, respectively, in a two‐electrode configuration. Thereby, by balancing the porosity (contribution to transport of electrolytes) and oxygen functionalities (contribution to additional pseudocapacitance), the present carbon materials enable integrated capacitive improvement for supercapacitors. The present scientific strategy of balancing porosity and heteroatom‐doping functionalities can be readily extended for producing other kinds of porous carbon materials especially used in the area of supercapacitors.

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“…The specific capacitance, C m (F g −1 ), of the electrode in a three‐electrode system was calculated from the GCD curve by using Equation :

true C_{m} = \frac{I Δ t}{m Δ V}

…”

Section: Methodsmentioning

confidence: 99%

Hierarchical Hybrids Integrated by Dual Polypyrrole‐Based Porous Carbons for Enhanced Capacitive Performance

Chen

et al. 2017

Chemistry A European J

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Architectural design of nitrogenous polymer-based carbons represents a facile and efficient strategy to improve performance because of their morphological diversity, tailorability, and N-containing structure. In this research, 0D and 1D forms of polypyrrole-derived porous carbons (A-PCS and A-PCT, respectively) are first integrated into nitrogen-doped hierarchically porous A-PCS/PCT hybrids by applying an easy multistep method. This integration, along with chemical activation, prevents serious agglomeration of carbon particles or tubes and creates a connected porous network structure, leading to improved textural properties (high surface area of 1684 m g , high pore volume of 1.57 cm g , and hierarchical porosity). Thus, A-PCS/PCT hybrids in a three-electrode setup reach high specific capacitances of 224 and 206 F g at 1 and 20 A g , respectively, with high rate capability (92 % capacitance retention). A symmetrical supercapacitor with A-PCS/PCT electrodes presents the highest power and energy densities of 12.6 kW kg and 8.58 Wh kg , respectively, and exceptional cycling life and stability with 92.4 % retention for up to 20 000 cycles. This study on conductive polymer-based hybrid materials may guide the design of architectures with new structures for applications in energy storage and conversion technologies.

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A melamine-assisted chemical blowing synthesis of N-doped activated carbon sheets for supercapacitor application

Cited by 196 publications

References 51 publications

Metal‐Organic Framework‐Derived Carbons for Battery Applications

Metal‐Organic Framework‐Derived Carbons for Battery Applications

Balancing Porosity and Oxygen‐Containing Functionalities of Hierarchically Porous Carbons for Enhanced Capacitive Supercapacitors

Hierarchical Hybrids Integrated by Dual Polypyrrole‐Based Porous Carbons for Enhanced Capacitive Performance

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