Electrochemical and thermal behavior of copper coated type MAG-20 natural graphite

Lu, Wenquan; Donepudi, V. S.; Prakash, Jai; Liu, J.; Amine, Khalil

doi:10.1016/s0013-4686(01)00883-0

Cited by 30 publications

(13 citation statements)

References 12 publications

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“…It resulted in superior electrochemical properties of the material, such as an increased electric conductivity and therefore improved high rate capability [20,21]. It was noted that possible reasons for the observed improvements are the suppression of solvent cointercalation and an improved lithium ion charge transfer at the graphite/electrolyte interface [19].…”

Section: Introductionmentioning

confidence: 99%

“…The major drawbacks of the reported coating methods are their high costs, the complexity of the processes, the usage of harmful chemicals (e.g. formaldehyde) and the influence of obtained byproducts [19,20]. Due to the disadvantages mentioned above copper coatings are, to our knowledge, not yet applied in commercial applications.…”

Section: Introductionmentioning

confidence: 99%

“…The synthesis proceeds via a gas phase reaction by the thermal decomposition of copper formates. In addition, the long-term cyclability of copper coated graphite was not yet investigated, charge/discharge cycling was only performed up to 25 cycles [19,20]. For any of the above mentioned applications this is insufficient.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries

Licht

Homeyer

Bösebeck

et al. 2015

Zeitschrift Für Physikalische Chemie

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Graphitic materials are currently the state-of-the-art anode materials for lithium ion secondary batteries. By chemical modification, the electrochemical performance of the pristine materials can be improved. In this paper we report on the preparation of nanostructured copper particles on graphite by thermal decomposition of copper formate. With this technique a novel, simple and low cost method for a homogeneous deposition of nanostructured copper particles on graphite was established. Different amounts of copper were realized and their influence on the electrochemical behavior of the active material was investigated.The copper particles had a size distribution between 50 nm and 300 nm. Electrochemical measurements displayed an improved performance of the synthesized composite material compared to the pristine material. Cyclic voltammetry showed a suppressed cointercalation of solvated lithium and an increased formation of the solid electrolyte interphase (SEI). Battery cycling demonstrated an increased discharge capacity and cycling stability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries

Licht

Homeyer

Bösebeck

et al. 2015

Zeitschrift Für Physikalische Chemie

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“…Several studies concerning copper deposition processes have been reported, such as, photoelectrodeposition [13], sputtering [14], electrodeposition [15], PVD-processes [16] wetness technique [17] and electroless deposition [18]. Among these methods, electrochemical deposition offers good filling capability, low-cost, and it is a fast alternative process to produce copper particle modified electrode.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of copper electrodeposition and photoelectrodeposition on boron doped diamond

Couto

Ribeiro

Migliorini

et al. 2013

Diamond and Related Materials

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Copper (Cu) electrodeposition and photoelectrodeposition on highly boron-doped diamond films (BDD) were investigated, at two different pH solutions. Cu particles were deposited in the potentiostat mode and under UV irradiation. The as-grown as well as the Cu modified BDD films were characterized by Raman Spectroscopy and Scanning Electron Microscopy. The copper photocatalytic deposition on BDD was discussed taking into account the influence of the photogenerated electrons for photoelectrodeposition process at both acid and neutral pH solutions. Under UV irradiation, the copper deposits presented higher density and uniformity all over the crystal faces when compared with those without UV irradiation.This behavior may be attributed to BDD semiconductor character due to its photogenerated electrons which enhanced the copper reduction reaction.

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“…It is anticipated that the 4 wetting problem could be overcome by coating the carbon nanofibre with copper before the consolidation process. Different coating techniques can be used, such as sputtering [16], electrodeposition [17,18], wetness technique [19], but the method of choice for metallization and interconnection which has emerged in recent years is electroless deposition due to its low cost, fast deposition rate, good filling capability, good uniformity and low process temperatures [20][21][22][23]. The deposition of Cr interlayers onto the CNF before Cu deposition has also been explored with the objective of improving the adhesion of Cu on CNF.…”

mentioning

confidence: 99%

Thermomechanical properties of copper–carbon nanofibre composites prepared by spark plasma sintering and hot pressing

Ullbrand

Córdoba

Tamayo-Ariztondo

et al. 2010

Composites Science and Technology

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Several types of carbon nanofibres (CNF) were coated with a uniform and dense copper layer by electroless copper deposition. The coated fibres were then sintered by two different methods, spark plasma sintering (SPS) and hot pressing (HP). The Cu coating thickness was varied so that different volume fraction of fibres was achieved in the produced composites. In some cases, the CNF were pre-coated with Cr for the improvement the Cu adhesion on CNF. The results show that the dispersion of the CNF into the Cu matrix is independent of the sintering method used. On the contrary, the dispersion is directly related to the efficiency of the Cu coating, which is tightly connected to the CNF type. Overall, strong variations of the thermal conductivity (TC) of the composites were observed (20-200 W/mK) as a function of CNF type, CNF volume fraction and Cr content, while the coefficient of thermal expansion (CTE) in all cases was found to be considerably lower than Cu (9.9-11.3 ppm/K). The results show a good potential for SPS to be used to process this type of materials, since the SPS samples show better properties than HP samples even though they have a higher porosity, in applications where moderate TC and low CTE are required.

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Electrochemical and thermal behavior of copper coated type MAG-20 natural graphite

Cited by 30 publications

References 12 publications

Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries

Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries

A comparative study of copper electrodeposition and photoelectrodeposition on boron doped diamond

Thermomechanical properties of copper–carbon nanofibre composites prepared by spark plasma sintering and hot pressing

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