Easy synthesis of hollow core, bimodal mesoporous shell carbon nanospheres and their application in supercapacitor

You, Bo; Yang, Jun; Sun, Yingqiang; Su, Qingde

doi:10.1039/c1cc15348j

Cited by 137 publications

(70 citation statements)

References 42 publications

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“…For example, Yang and co-workers reported the synthesis of hollow carbon nanospheres by carbonizing its hollow nanosphere precursor obtained through a silica sphere-assisted hard templating method. 28 The resulting hollow carbon nanospheres showed a high surface area (1704 m 2 g -1 ), large bimodal mesopores (6.4 and 3.1 nm), and large pore volumes (1.6 cm 3 g -1 ). With such a design, a specific capacitance of 251 F g -1 at 50 mV s -1 was achieved for the hollow carbon nanospheres.…”

Section: Hollow 0d Nanostructuresmentioning

confidence: 99%

Supercapacitor electrode materials: nanostructures from 0 to 3 dimensions

Tetard

Zhai

et al. 2015

Energy Environ. Sci.

2,288

1,039

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The ever-growing global demand of energy together with the depletion of fossil fuels makes it critical to develop sustainable and renewable energy resources. Developing relevant energy storage systems (e.g. batteries and supercapacitors) is essential to utilizing sustainable and renewable energy resources. A supercapacitor is highly beneficial in storing renewable energy. For example, when light is not shining or wind is not blowing, the energy needs to be stored in devices like batteries and supercapacitors. Among the efforts of building efficient supercapacitors, electrode materials with rational nanostructured designs have offered major improvements in performance over the past several years. This review article is intended to examine recent progress in nanostructuring supercapacitor electrode materials, highlighting the fundamental understanding of the relationship between structural properties and electrochemical performances, as well as an outlook on the next generation of nanostructured supercapacitor electrodes design. REVIEW This journal isSupercapacitors have drawn considerable attention in recent years due to their high specific power, long cycle life, and ability to bridge the power/energy gap between conventional capacitors and batteries/fuel cells. Nanostructured electrode materials have demonstrated superior electrochemical properties in producing high-performance supercapacitors. In this review article, we describe the recent progress and advances in designing nanostructured supercapacitor electrode materials based on various dimensions ranging from zero to three. We highlight the effect of nanostructures on the properties of supercapacitors including specific capacitance, rate capability and cycle stability, which may serve as a guideline for the next generation of supercapacitor electrode design.

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Section: Hollow 0d Nanostructuresmentioning

confidence: 99%

Supercapacitor electrode materials: nanostructures from 0 to 3 dimensions

Tetard

Zhai

et al. 2015

Energy Environ. Sci.

2,288

1,039

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“…In addition, modified CS have been prepared through a bottom-up self-assembly approach by using different functional pre cursors or post-synthesis modification. Many researchers have used this technique to produce uniform cs-NCS or ys-NCS spheres with adjustable shell thickness, such as carbon-metal, carbon-silica, metal-carbon, silica-carbon or metal-oxide-carbon, which will be presented briefly in the following section [51][52][53][54] . The Stöber method is efficient, feasible, low cost, easy to scale up and offers tremendous opportunities 13 for designing various functional NCS at the molecular level ( Table 1).…”

Section: Microemulsion Polymerization Synthesismentioning

confidence: 99%

Molecular-based design and emerging applications of nanoporous carbon spheres

et al. 2015

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Over the past decade, considerable progress has been made in the synthesis and applications of nanoporous carbon spheres ranging in size from nanometres to micrometres. This Review presents the primary techniques for preparing nanoporous carbon spheres and the seminal research that has inspired their development, presented potential applications and uncovered future challenges. First we provide an overview of the synthesis techniques, including the Stöber method and those based on templating, self-assembly, emulsion and hydrothermal carbonization, with special emphasis on the design and functionalization of nanoporous carbon spheres at the molecular level. Next, we cover the key applications of these spheres, including adsorption, catalysis, separation, energy storage and biomedicine — all of which might benefit from the regular geometry, good liquidity, tunable porosity and controllable particle-size distribution offered by nanoporous carbon spheres. Finally, we present the current challenges and opportunities in the development and commercial applications of nanoporous carbon spheres

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“…Recent research efforts have introduced external surface structures, e.g. onion-like carbons [10] or, carbon hollow spheres [11] approaches to enhance power densities. However, these alternatives still exhibit low specific surface areas and limited charge storage capabilities.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of carbon core–shell pore structures and their performance as supercapacitors

Ariyanto

Dyatkin

Zhang

et al. 2015

Microporous and Mesoporous Materials

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High-power supercapacitors require excellent electrolyte mobility within the pore network and high electrical conductivity for maximum capacitance and efficiency. Achieving high power typically requires sacrificing energy densities, as the latter demands a high specific surface area and narrow porosity that impedes ion transport. We present a novel solution for this optimization problem: a nanustructured core-shell carbonaceous material that exhibits a microporous carbon core surrounded by a mesoporous, graphitic shell. Our tunable synthesis parameters yielded a structure that features either a sharp or a gradual transition between the core and shell sections. Electrochemical supercapacitor testing using organic electrolyte revealed that these novel core-shell materials outperform carbons with homogeneous pore structures. The hybrid core-shell materials showed a combination of good capacitance retention, typical for the carbon present in the shell and high specific capacitance, typical for the core material. These materials achieved power densities in excess of 40 kW kg -1 at energy densities reaching 27 Wh kg -1 .

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Easy synthesis of hollow core, bimodal mesoporous shell carbon nanospheres and their application in supercapacitor

Cited by 137 publications

References 42 publications

Supercapacitor electrode materials: nanostructures from 0 to 3 dimensions

Supercapacitor electrode materials: nanostructures from 0 to 3 dimensions

Molecular-based design and emerging applications of nanoporous carbon spheres

Synthesis of carbon core–shell pore structures and their performance as supercapacitors

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