High rate performance carbon nano-cages with oxygen-containing functional groups as supercapacitor electrode materials

Jiang, Liang; Wang, Jing; Mao, Xuyan; Xu, Xiangyu; Zhang, Bo; Yang, Jie; Wang, Yunfei; Zhu, Junwu; Hou, Shifeng

doi:10.1016/j.carbon.2016.09.081

Cited by 85 publications

(42 citation statements)

References 35 publications

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“…In addition to the above templates, some particular metal nanoparticles can be used as templates for porous carbon synthesis. Hou et al synthesized a carbon nano‐cage by CO 2 reduction with the Mg metal ribbon as a reducing agent and template 166. The obtained carbon material displayed an SSA of 806 m 2 g −1 , a narrow pore size centered at 6–7 nm, and a pore volume of 1.51 cm 3 g −1 .…”

Section: Template Methodsmentioning

confidence: 99%

Synthesis Strategies of Porous Carbon for Supercapacitor Applications

et al. 2020

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Supercapacitors (SCs) have experienced a significant increase in research activity and commercialization during the past few decades. As the primary and most important electrode active material for commercial SCs, porous carbon is produced at an industrial‐scale through traditional carbonization‐activation strategies. Nevertheless, commercial porous carbon materials have some disadvantages such as high production cost, corrosion of equipment, and emission of toxic gases and byproduct pollutants during production. In recent years, huge efforts have been made to develop novel synthesis strategies for porous carbon materials. This review focuses on the pore formation mechanisms in traditional carbonization‐activation methods, emerging activation methods, template methods, self‐template methods, and novel emerging methods for the synthesis of porous carbons for SCs. Strategies developed so far for the synthesis of porous carbon materials are summarized. The mechanisms and recent advances for each strategy are reviewed. Furthermore, future directions and synthesis strategies for porous carbons are proposed.

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Section: Template Methodsmentioning

confidence: 99%

Synthesis Strategies of Porous Carbon for Supercapacitor Applications

et al. 2020

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“…From Figure a, we can see clearly that all the materials have a remarkable peak at around 26°, which is attributed to the characteristic lattice planes of graphitic carbon (002). In addition, there is a weak peak at about 44° in HCNS, corresponding to (101) diffractions of graphite carbon ,. However, this peak almost cannot be observed in GCNS5, GCNS10 and GCNS15, which might be ascribed to the graphite carbon network destroyed by large number of doping.…”

Section: Resultsmentioning

confidence: 96%

Sphere‐and‐Flake‐Structured Cu, N Co‐Doped Carbon Catalyst Designed by a Template‐Free Method for Robust Oxygen Reduction Reaction

Xiang

Huang

et al. 2019

ChemElectroChem

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The suitable structural design of carbon catalysts is a straightforward strategy to achieve a superior electrocatalytic activity for the oxygen reduction reaction. Herein, we firstly design a three-dimensional sphere-and-flake-structured Cu, N co-doped carbon catalyst, via a template-free method, for robust oxygen reduction reaction. The nanostructure is composed of graphene-like nanosheets and carbon nanospheres with abundant mesopores, which can expose numerous active sites. Cu 2 + and the copolymer of PANI and Cu 2 + and melamine play important roles in the construction of the sphere-and-flake structure. By optimizing the addition of melamine, the structure of the catalyst can be successfully controlled. The as-constructed GCNS10 material possesses a large amount of Cu-N x sites and exhibits an excellent electrocatalytic activity for the oxygen reduction reaction, delivering a limiting current density (6.14 mA cm À 2 at À 0.1 V) and stability superior to those of commercial Pt/C materials in 0.1 M KOH solution. These satisfactory performances suggest that GCNS10 is promising as a next-generation non-noble-metal oxygen reduction reaction catalyst. Besides, using an air cathode with the GCNS10 catalyst works well in a Zn-air battery, indicating that GCNS10 can be used in such devices.

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“…Generally, external-templating strategies offer precise control over diverse morphologies as mentioned above, and they can be further extended to build core-shell/hollow and other complex nanoarchitectures that synergize the accessible interior spaces/active interfaces into a single system. 18,56,57 For example, Yu's group reported a new rigid-interface-induced outward contraction approach to fabricate hollow mesoporous carbon nanocubes with MOF as the precursor (Fig. 5a).…”

Section: Morphology Controlmentioning

confidence: 99%