Effect of additional nickel on crystallization degree evolution of expanded graphite during ball-milling and annealing

Wang, Liqin; Yue, Xueqing; Zhang, Fucheng; Zhang, Ruijun

doi:10.1016/j.jallcom.2010.03.063

Cited by 11 publications

(8 citation statements)

References 31 publications

(29 reference statements)

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“…This phenomenon might be caused by the agglomeration and the renement of the graphitic structure during high temperature annealing, which could be seen from XRD patterns. 31 Fig. S4 † shows the thermogravimetric analysis (TGA) of the ball milled graphite.…”

Section: Resultsmentioning

confidence: 99%

Ball milling: a green mechanochemical approach for synthesis of nitrogen doped carbon nanoparticles

et al. 2013

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Technological and scientific challenges coupled with environmental considerations have attracted a search for robust, green and energy-efficient synthesis and processing routes for advanced functional nanomaterials. In this article, we demonstrate a high-energy ball milling technique for large-scale synthesis of nitrogen doped carbon nanoparticles, which can be used as an electro-catalyst for oxygen reduction reactions after a structural refinement with controlled thermal annealing. The resulting carbon nanoparticles exhibited competitive catalytic activity (5.2 mA cm(-2) kinetic-limiting current density compared with 7.6 mA cm(-2) on Pt/C reference) and excellent methanol tolerance compared to a commercial Pt/C catalyst. The proposed synthesis route by ball milling and annealing is an effective process for carbon nanoparticle production and efficient nitrogen doping, providing a large-scale production method for the development of highly efficient and practical electrocatalysts.

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Section: Resultsmentioning

confidence: 99%

Ball milling: a green mechanochemical approach for synthesis of nitrogen doped carbon nanoparticles

et al. 2013

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“…1(e), the diffraction peaks of graphite have almost disappeared in the C-10h composite. This is likely to be related to a reduction in the crystallite thickness in the cdirection of graphite, or introduction of disordered graphene planes during the milling process, 27 which will be further demonstrated by later SEM and TEM observations. Fig.…”

Section: Electrochemical Measurementsmentioning

confidence: 86%

“…By contrast, as shown in Fig.1(e), the diffraction peaks of graphite have almost disappeared in the C-10h composite. This is likely to be related to a reduction in the crystallite thickness in the cdirection of graphite, or introduction of disordered graphene planes during the milling process,27 which will be further demonstrated by later SEM and TEM observations. Fig.2(a), (b) and (c) show the back-scattered electron SEM images of P-2.5h, P-7.5h and P-10h composites, respectively, while Fig.2(d)shows that of C-10h for comparison.…”

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confidence: 86%

Enhancing the performance of Sn–C nanocomposite as lithium ion anode by discharge plasma assisted milling

Liu

Zeng

et al. 2012

J. Mater. Chem.

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An efficient synthesis method, namely dielectric barrier discharge plasma assisted milling (P-milling), is used for the first time to prepare Sn-C anode materials for lithium ion batteries. By short-time P-milling, a unique Sn-C nanocomposite is obtained with a microstructure of multi-scale Sn particles homogeneously dispersed in a graphite matrix. The P-milled Sn-C nanocomposite anodes exhibit much better electrochemical performance with higher reversible capacity and better cyclability in comparison with those obtained by conventional milling (C-milling). Our results demonstrate that discharge plasma assisted milling is a simple and efficient method to prepare Sn-C composite anodes on a large scale with good performance for lithium ion battery applications.

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“…EG is a worm-like and porous material, it has large surface areas, which makes EG to be a green adsorption material and a good support for catalysts [4]; Moreover, studies on the composites of EG and photocatalyst have been carried on by domestic and foreign scholars [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Expanded Graphite with TiO<sub>2</sub> Composites

Wang

Xiang

Zhao

et al. 2011

AMR

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The composites of expanded ghaphite with TiO2(EG/TiO2) have been prepared in the method of precursor mixing, and the optimum preparation conditions have been studied. The morphology and crystal structure of the EG/TiO2composites have been characterized by the means of SEM and XRD. Also their performance of decolorization for methyl orange solution has been researched. The results are shown as follows: the EG/TiO2composites maintain the rich porous and network structure of EG, and a lot of anatase TiO2particles widely distribute on surfaces and in layers of EG. Compared with TiO2sol, taking tetrabutyl titanate as titanium source, the prepared EG/TiO2composites have better performance. Increasing the added amount of tetrabutyl titanate, the decolorization rate of methyl orange solution increases at first, and then decreases. When adding 2 mL tetralbutyl titanate, the decolorization rate is at the peak, up to 98.4%. These results show the composites have excellent performance of decolorization for methyl orange solution. We suppose it is mainly due to the interaction between the adsorption of EG and the degradation of TiO2particles.

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Effect of additional nickel on crystallization degree evolution of expanded graphite during ball-milling and annealing

Cited by 11 publications

References 31 publications

Ball milling: a green mechanochemical approach for synthesis of nitrogen doped carbon nanoparticles

Ball milling: a green mechanochemical approach for synthesis of nitrogen doped carbon nanoparticles

Enhancing the performance of Sn–C nanocomposite as lithium ion anode by discharge plasma assisted milling

Preparation and Characterization of Expanded Graphite with TiO<sub>2</sub> Composites

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