Necklace-like Hollow Carbon Nanospheres from the Pentagon-Including Reactants:  Synthesis and Electrochemical Properties

Wu, Changzheng; Zhu, Xi; Ye, Lila; Ouyang, Chuanzi; Hu, Shuangquan; Lei, Lanyu

doi:10.1021/ic060827f

Cited by 66 publications

(36 citation statements)

References 34 publications

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“…Probably, the most relevant re-60 search in this area has been done by Beguin, Frackowiak 61 and co-workers [13][14][15][16][17][18][19]. Similar results have been obtained 62 by other authors using ordered porous carbons with tailored 63 pore size [12], carbon blacks [20] or necklace-like hollow car-64 bon nanospheres [21]. From these studies, the role of porosity 65 has been discussed as well as the importance of the dangling 66 carbon atoms in the hydrogen storage.…”

mentioning

confidence: 61%

Effect of surface chemistry on electrochemical storage of hydrogen in porous carbon materials

Bleda-Martı́nez

Pérez

Linares-Solano

et al. 2008

Carbon

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A B S T R A C TPorous carbon materials, with different porosities and surface chemistry have been prepared and characterized to obtain a better understanding of the mechanism of the electrochemical storage of hydrogen. The hydrogen storage capacity depends, not only on the porosity of the material, but also on the surface chemistry, which is a critical factor. The results show that the higher the amount of surface oxygen groups, the lower is the hydrogen uptake. Measurement of the number of active carbon sites shows the important role of the unsaturated carbon atoms in the process. In situ Raman spectroscopy has been used in order to further explore the structural changes in the carbon material during the chargedischarge processes. This technique has allowed us to observe the formation of the C(sp 2 )AH bonds during the cathodic process and its reversibility during the oxidation step.Ó 2008 Published by Elsevier Ltd. 29 Introduction 30Carbon materials have been extensively studied as electrodes 31 for energy storage devices since they present a very interest-32 ing electrochemical behaviour. These materials may have 33 high electrical conductivity and can both donate and accept 34 electrons [1]. Carbon electrodes have a good polarizability 35 and their properties are tuneable depending on the porosity, 36 thermal treatment, microtexture, hybridization, content of 37 heteroatoms, etc. Moreover, they are chemically stable in 38 most solvents and present relatively low cost and easy pro-39 cessability [2]. One important application is in rechargeable 40 batteries in which carbon materials are used as a lithium res-41 ervoir at the negative electrode [1]. Additionally, the storage of 42 energy in supercapacitors, based on the electrical double 43 layer and pseudocapacitance of carbon materials, has also 44 been deeply analysed with very promising results [2][3][4]. 45A different electrochemical application is the electrochem-46 ical storage of hydrogen by electrodecomposition of water in 47 alkaline medium at cathodic conditions. Several nanostruc-48 tured carbon materials, mainly nanotubes (CNT), have been 49 tested for this application [5][6][7][8][9][10][11]. However, the results ob-50 tained present an important scattering. In fact, taking into ac-51 count theoretical calculations and experimental results, it is 52 highly unlikely that a significant amount of hydrogen can 53 be stored in CNT [8]. The different results could be justified 54 by the different degree of purity of the samples (CNT often 55 contain amorphous and disordered carbonaceous material 56 or residual metal catalyst) [8,12]. 57 Porous carbons have also been extensively studied for this 58 application, giving higher values for hydrogen storage and 59 much better reproducibility. Probably, the most relevant re-60 search in this area has been done by Beguin, Frackowiak 61 and co-workers [13][14][15][16][17][18][19]. Similar results have been obtained 62 by other authors using ordered porous carbons with tailored 63 pore size [12], carbon blacks [...

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mentioning

confidence: 61%

Effect of surface chemistry on electrochemical storage of hydrogen in porous carbon materials

Bleda-Martı́nez

Pérez

Linares-Solano

et al. 2008

Carbon

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“…Many reactions have also been performed with chlorinated carbon reactants, e.g. C 2 Cl 4 [90] and the products obtained have included hollow carbon nanospheres [91]. Lv et al have reported on the effect of using chlorine-containing precursors to synthesize micrometer-long continuous FeNi nanowires inside thin-walled CNTs [92].…”

Section: Halidesmentioning

confidence: 99%

The use of organometallic transition metal complexes in the synthesis of shaped carbon nanomaterials

Nyamori

Mhlanga

Coville

2008

Journal of Organometallic Chemistry

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“…Here, the 3D CNNWs obtained by the reaction of ferrocene with CCl 4 , C 2 Cl 4 , and C 4 Cl 6 showed high surface areas of 564, 680, and 552 m 2 /g, respectively, which were all higher than those of other carbon nanostructures in the previous reports [16,17] .…”

Section: Surface Area Studies Of Cnnwsmentioning

confidence: 49%

A simple solution route to assemble three-dimensional (3D) carbon nanotube networks

Luo

Ning

2009

Sci. Bull.

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Necklace-like Hollow Carbon Nanospheres from the Pentagon-Including Reactants: Synthesis and Electrochemical Properties

Cited by 66 publications

References 34 publications

Effect of surface chemistry on electrochemical storage of hydrogen in porous carbon materials

Effect of surface chemistry on electrochemical storage of hydrogen in porous carbon materials

The use of organometallic transition metal complexes in the synthesis of shaped carbon nanomaterials

A simple solution route to assemble three-dimensional (3D) carbon nanotube networks

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