Monodisperse Carbon Nanospheres with Hierarchical Porous Structure as Electrode Material for Supercapacitor

Yang, Xiutao; Xia, Hui; Liang, Zhongguan; Li, Haiyan; Yu, Hongwen

doi:10.1186/s11671-017-2318-z

Cited by 41 publications

(14 citation statements)

References 18 publications

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“…As shown in Fig. 3c, the aMCSs-0.4 electrode exhibits an excellent specific capacitance of 310 F g −1 at a current density of 0.5 A g −1 , which is higher than other similar MCS electrodes [12–14]. The high specific capacitance benefits from the large surface areas and heteroatoms doped.…”

Section: Resultsmentioning

confidence: 88%

“…From the perspective of materials chemistry, porous carbon materials with different morphology and structure such as carbon aerogels [7], fibers [8], nanotubes [9], nanospheres [10], and activated carbon [11] have been synthesized successfully. Recently, monodisperse carbon spheres (MCSs) have gained considerable investigation into functional electrode materials for energy storage and conversion devices because of the unique properties such as high stack density, inherent short ion diffusion path way, and good structural stability [12, 13]. The precise control over the morphology, dispersity, smooth surface, and particle size of the MCSs has been the key to meet the requirement for some special practical applications [14].…”

Section: Introductionmentioning

confidence: 99%

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Formation of Monodisperse Carbon Spheres with Tunable Size via Triblock Copolymer-Assisted Synthesis and Their Capacitor Properties

et al. 2019

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A facile hydrothermal polymerization method has been developed for the preparation of monodisperse carbon spheres (MCSs) using the triblock copolymer F108 as surfactant. The synthesis is based on the ammonia-catalyzed polymerization reaction between phenol and formaldehyde (PF). The resultant MCSs have a perfect spherical morphology, smooth surface, and high dispersity. The particle sizes can be tuned in a wide range of 500~2400 nm by adjusting the dosage of the PF precursor. The activated MCSs with suitable heteroatoms (N and O) doped and a large specific surface area (960 m 2 g− 1 ) were obtained. A high-performance electrode of electrical double-layer capacitors fabricated by those active material have an excellent specific capacitance (310 F g −1 at 0.5 A g −1 ) and outstanding cycling stability (92% capacitance retention after 10,000 cycles). This work provides a new opportunity for the fabrication of MCSs with potential applications. Electronic supplementary material The online version of this article (10.1186/s11671-019-2952-8) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Formation of Monodisperse Carbon Spheres with Tunable Size via Triblock Copolymer-Assisted Synthesis and Their Capacitor Properties

et al. 2019

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“…More recently, the chemical activation of spherical carbons has been carried out using sodium hydroxide, zinc chloride, phosphoric acid and potassium hydroxide [32,33,34]. For example, Yang et al [35] reported on the KOH activation of CSs obtained by a hydrothermal reaction of a triblock copolymer Pluronic F108 (PEO 132 -PPO 50 -PEO 132 ) template and phenolic resin as the carbon source. A specific capacitance of 182 F g −1 was recorded for the aggregated CSs at a specific current of 0.2 A g −1 with a capacitance retention of 70.5%.…”

Section: Introductionmentioning

confidence: 99%

Deciphering the Structural, Textural, and Electrochemical Properties of Activated BN-Doped Spherical Carbons

et al. 2019

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In this study, the effect of K2CO3 activation on the structural, textural, and electrochemical properties of carbon spheres (CSs) and boron and nitrogen co-doped carbon spheres (BN-CSs) was evaluated. Activation of the CSs and BN-CSs by K2CO3 resulted in increased specific surface areas and ID/IG ratios. From the X-ray photoelectron spectroscopy (XPS) results, the BN-CSs comprised of 64% pyridinic-N, 24% pyrrolic-N and 7% graphitic-N whereas the activated BN-CSs had 19% pyridinic-N, 40% pyrrolic-N and 22% graphitic-N displaying the effect of activation on the type of N configurations in BN-CSs. A possible BN-co-doping and activation mechanism for the BN-CSs is proposed. Electrochemical analysis of the electrode materials revealed that BN doping, carbon morphology, structure, and porosity played a crucial role in enhancing the capacitive behavior of the CSs. As a proof of concept, a symmetric device comprising the activated BN-CSs displayed a specific power of 800 W kg−1 at a specific current of 1 A g−1 within an operating cell potential of 1.6 V in a 3 M KNO3 electrolyte. The study illustrated for the first time the role of K2CO3 activation in influencing the physical and surface properties of template-free activated BN-CSs as potential electrode materials for energy storage systems.

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“…These hollow carbon nanospheres reveal prospective electrochemical performance. Yang and his co‐workers reported monodisperse carbon nanospheres with hierarchical porous structure which exhibit high specific surface and good specific capacitance . Zhang's group developed a valuable approach to prepare mesoporous carbon hollow spheres with superb electrochemical performance .…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Nitrogen‐Doped Mesoporous Hollow Carbon Nanospheres for High‐Performance Supercapacitors

et al. 2018

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We report the facile preparation of nitrogen‐doped mesoporous hollow carbon nanospheres (N‐MHCNS) by directly carbonizing hollow polypyrrole nanospheres that are derived from in situ polymerization. Here, we use a novel soft template (PMMA‐PBMA‐PMAA) as the core. At 700 °C, the obtained N‐MHCNSs (denoted N‐MHCNS700) show superior electrochemical performance. In 1 M HCl electrolyte, N‐MHCNS700 exhibits a capacitance as high as 275.5 F g−1 at a current density of 1 A g−1 and a high rate capability, retaining 54.4 % of the initial capacitance at the current density of 20 A g−1. In addition, the specific capacitance of N‐MHCNS700 is approximately 100 % retained at a current density of 10 A g−1 after 5000 cycles, indicating amazing stable cycling performance. The excellent electrochemical performance can be derived from the amorphous graphitic carbon, hollow nanosphere structure, mesoporous properties, and nitrogen doping effect.

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Monodisperse Carbon Nanospheres with Hierarchical Porous Structure as Electrode Material for Supercapacitor

Cited by 41 publications

References 18 publications

Formation of Monodisperse Carbon Spheres with Tunable Size via Triblock Copolymer-Assisted Synthesis and Their Capacitor Properties

Formation of Monodisperse Carbon Spheres with Tunable Size via Triblock Copolymer-Assisted Synthesis and Their Capacitor Properties

Deciphering the Structural, Textural, and Electrochemical Properties of Activated BN-Doped Spherical Carbons

Facile Synthesis of Nitrogen‐Doped Mesoporous Hollow Carbon Nanospheres for High‐Performance Supercapacitors

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