Confined Assembly of Hollow Carbon Spheres in Carbonaceous Nanotube: A Spheres-in-Tube Carbon Nanostructure with Hierarchical Porosity for High-Performance Supercapacitor

Ze CHEN; Sunjie YE; Stephen D. EVANS; Yuanhang GE; Zhifeng ZHU; Yingfeng TU; Xiaoming YANG

doi:10.1002/smll.201704015

Confined Assembly of Hollow Carbon Spheres in Carbonaceous Nanotube: A Spheres-in-Tube Carbon Nanostructure with Hierarchical Porosity for High-Performance Supercapacitor

Ze CHEN, Sunjie YE, Stephen D. EVANS, Yuanhang GE, Zhifeng ZHU, Yingfeng TU, Xiaoming YANG^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

84 Citations (Scopus)

Abstract

Carbonaceous nanotubes (CTs) represent one of the most popular and effective carbon electrode materials for supercapacitors, but the electrochemistry performance of CTs is largely limited by their relatively low specific surface area, insufficient usage of intratube cavity, low content of heteroatom, and poor porosity. An emerging strategy for circumventing these issues is to design novel porous CT-based nanostructures. Herein, a spheres-in-tube nanostructure with hierarchical porosity is successfully engineered, by encapsulating heteroatom-doping hollow carbon spheres into one carbonaceous nanotube (HCSs@CT). This intriguing nanoarchitecture integrates the merits of large specific surface area, good porosity, and high content of heteroatoms, which synergistically facilitates the transportation and exchange of ions and electrons. Accordingly, the as-prepared HCSs@CTs possess outstanding performances as electrode materials of supercapacitors, including superior capacitance to that of CTs, HCSs, and their mixtures, coupled with excellent cycling life, demonstrating great potential for applications in energy storage.

Original language	English
Article number	1704015
Number of pages	8
Journal	Small
Volume	14
Issue number	19
Early online date	26 Mar 2018
DOIs	https://doi.org/10.1002/smll.201704015
Publication status	Published - 9 May 2018
Externally published	Yes

Bibliographical note

The data associated with this article are available from University of Leeds https://doi.org/10.5518/328.

Funding

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 21104050 and 11604045), China Postdoctoral Science Foundation (2013M541715 and 2014T70541), a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the Fundamental Research Funds for the Central Universities and Shanghai Science and Technology Commission (16PJ1400100, 17ZR1440000, and 17JC400700), and EPSRC (EP/P023266/1).

Keywords

carbon nanostructures
confined assembly
heteroatoms doping
spheres-in-tube
supercapacitors

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title = "Confined Assembly of Hollow Carbon Spheres in Carbonaceous Nanotube: A Spheres-in-Tube Carbon Nanostructure with Hierarchical Porosity for High-Performance Supercapacitor",

abstract = "Carbonaceous nanotubes (CTs) represent one of the most popular and effective carbon electrode materials for supercapacitors, but the electrochemistry performance of CTs is largely limited by their relatively low specific surface area, insufficient usage of intratube cavity, low content of heteroatom, and poor porosity. An emerging strategy for circumventing these issues is to design novel porous CT-based nanostructures. Herein, a spheres-in-tube nanostructure with hierarchical porosity is successfully engineered, by encapsulating heteroatom-doping hollow carbon spheres into one carbonaceous nanotube (HCSs@CT). This intriguing nanoarchitecture integrates the merits of large specific surface area, good porosity, and high content of heteroatoms, which synergistically facilitates the transportation and exchange of ions and electrons. Accordingly, the as-prepared HCSs@CTs possess outstanding performances as electrode materials of supercapacitors, including superior capacitance to that of CTs, HCSs, and their mixtures, coupled with excellent cycling life, demonstrating great potential for applications in energy storage.",

keywords = "carbon nanostructures, confined assembly, heteroatoms doping, spheres-in-tube, supercapacitors",

author = "Ze CHEN and Sunjie YE and EVANS, {Stephen D.} and Yuanhang GE and Zhifeng ZHU and Yingfeng TU and Xiaoming YANG",

note = "The data associated with this article are available from University of Leeds https://doi.org/10.5518/328.",

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AU - CHEN, Ze

AU - YE, Sunjie

AU - EVANS, Stephen D.

AU - GE, Yuanhang

AU - ZHU, Zhifeng

AU - TU, Yingfeng

AU - YANG, Xiaoming

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PY - 2018/5/9

Y1 - 2018/5/9

N2 - Carbonaceous nanotubes (CTs) represent one of the most popular and effective carbon electrode materials for supercapacitors, but the electrochemistry performance of CTs is largely limited by their relatively low specific surface area, insufficient usage of intratube cavity, low content of heteroatom, and poor porosity. An emerging strategy for circumventing these issues is to design novel porous CT-based nanostructures. Herein, a spheres-in-tube nanostructure with hierarchical porosity is successfully engineered, by encapsulating heteroatom-doping hollow carbon spheres into one carbonaceous nanotube (HCSs@CT). This intriguing nanoarchitecture integrates the merits of large specific surface area, good porosity, and high content of heteroatoms, which synergistically facilitates the transportation and exchange of ions and electrons. Accordingly, the as-prepared HCSs@CTs possess outstanding performances as electrode materials of supercapacitors, including superior capacitance to that of CTs, HCSs, and their mixtures, coupled with excellent cycling life, demonstrating great potential for applications in energy storage.

AB - Carbonaceous nanotubes (CTs) represent one of the most popular and effective carbon electrode materials for supercapacitors, but the electrochemistry performance of CTs is largely limited by their relatively low specific surface area, insufficient usage of intratube cavity, low content of heteroatom, and poor porosity. An emerging strategy for circumventing these issues is to design novel porous CT-based nanostructures. Herein, a spheres-in-tube nanostructure with hierarchical porosity is successfully engineered, by encapsulating heteroatom-doping hollow carbon spheres into one carbonaceous nanotube (HCSs@CT). This intriguing nanoarchitecture integrates the merits of large specific surface area, good porosity, and high content of heteroatoms, which synergistically facilitates the transportation and exchange of ions and electrons. Accordingly, the as-prepared HCSs@CTs possess outstanding performances as electrode materials of supercapacitors, including superior capacitance to that of CTs, HCSs, and their mixtures, coupled with excellent cycling life, demonstrating great potential for applications in energy storage.

KW - carbon nanostructures

KW - confined assembly

KW - heteroatoms doping

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KW - supercapacitors

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Confined Assembly of Hollow Carbon Spheres in Carbonaceous Nanotube: A Spheres-in-Tube Carbon Nanostructure with Hierarchical Porosity for High-Performance Supercapacitor

Abstract

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