The influence of aluminum phosphates on graphite oxidation

Maier, Christopher R.; Jones, Linda E.

doi:10.1016/j.carbon.2005.04.006

Cited by 26 publications

(32 citation statements)

References 16 publications

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“…Hulicova-Jurcakova et al compared carbons prepared from completely different precursors, showing quite different surface areas and oxygen contents, and by using a two-electrode cell [33], where a control of the electrode potential, necessary for a meaningful comparison among oxidation currents of different materials, cannot be achieved. Moreover, they assigned the enhanced oxidation resistance to the physical blockage of active sites by phosphate groups [33], thus, using arguments employed in the thermal-oxidative gasification of carbons [35][36][37][38][39][40]. On the other hand, instead of an effect on the oxidation resistance, Huang et al have recently objected that the P-groups, especially polyphosphates, play a critical role in stabilizing the surface of carbons during the reversible electrochemical hydrogen storage at low potentials [34].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…The influence of phosphorus groups in the thermal oxidation inhibition of different carbon materials has been widely studied and discussed on the literature [35][36][37][38][39][40]. In most cases, the oxidation protection was achieved by impregnation of already-prepared carbon materials with H 3 PO 4 , phosphates and other kind of phosphorus-containing molecules, followed by a thermal treatment for their decomposition and P-anchoring on the carbon surface [35][36][37][38][39][40].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…In most cases, the oxidation protection was achieved by impregnation of already-prepared carbon materials with H 3 PO 4 , phosphates and other kind of phosphorus-containing molecules, followed by a thermal treatment for their decomposition and P-anchoring on the carbon surface [35][36][37][38][39][40]. Some authors proposed that the phosphorus species enhance the oxidation resistance by blockage (poisoning) of the active sites that are prone to suffer from oxidation, formation of a protective glassy diffusion barrier, and/or neutralization of impurities that can catalyze the oxidation of carbon materials [35][36][37][38][39][40].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…Hence, the enhanced electrooxidation resistance of these P-containing carbons could be explained in different terms to those postulated in the past [35][36][37][38][39][40]. In order to do so, the surface chemistry of electro-oxidized ACs has been analyzed to get some insights about the possible electrooxidation mechanism of P-containing porous carbons.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

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Enhanced electro-oxidation resistance of carbon electrodes induced by phosphorus surface groups

Berenguer

Ruiz-Rosas

Gallardo

et al. 2015

Carbon

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ABSTRACT:The electro-oxidation of carbon materials enormously degrades their performance and limits their wider utilization in multiple electrochemical applications.In this work, the positive influence of phosphorus functionalities on the overall electrochemical stability of carbon materials has been demonstrated under different conditions. We show that the extent and selectivity of electroxidation in P-containing carbons are completely different to those observed in conventional carbons without P.The electro-oxidation of P-containing carbons involves the active participation of phosphorus surface groups, which are gradually transformed at high potentials from less-to more-oxidized species to slow down the introduction of oxygen groups on the carbon surface (oxidation) and the subsequent generation of (C*OOH)-like unstable promoters of electro-gasification. The highest-oxidized P groups (-C-O-P-like species) seem to distribute the gained oxygen to neighboring carbon sites, which finally suffer oxidation and/or gasification. So it is thought that P-groups could act as mediators of carbon oxidation although including various steps and intermediates compared to electroxidation in P-free materials.

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced electro-oxidation resistance of carbon electrodes induced by phosphorus surface groups

Berenguer

Ruiz-Rosas

Gallardo

et al. 2015

Carbon

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“…Beside the insolubility and reaggregation tendency of graphene compounds which limit their processing and result in their nonuniform dispersion in polymer matrices [14], one of the most important problems of graphene and graphitic compounds is their oxidation in ambient air at elevated temperatures [18,19].…”

Section: Introductionmentioning

confidence: 99%

Influence of hybrid functionalized graphite nanoplatelets-tripolyphosphate on improvement in fire protection of intumescent fire resistive coating for steel structures

Mohammadi

Shariatpanahi²,

Taromi

2015

Polymer Degradation and Stability

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Aluminum phosphate modified brucite and its flame retardant and smoke suppression performance on ethylene‐vinyl acetate resin

Peng

Zhao

Wang

2020

Polymers for Advanced Techs

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A novel halogen-free flame retardant (FR) consisting of brucite, aluminum phosphate (AlP), and silane coupling agent (B/AlP/A) was prepared via co-precipitation assembly technique. The morphology, chemical compositions, size distribution, and thermal stability of B/AlP/A were investigated. When used in ethylene-vinyl acetate (EVA) resin, the B/AlP/A could significantly enhance the flame retardant and smoke suppression performance of the EVA composites, which is mainly attributed to the AIP. With 50 wt% FR loading, the peak heat release rate (PHRR) of EVA-B/AlP/A (299.2 kW Á m −2) is much lower than that of EVA-B/A (387.4 kW Á m −2). Moreover, B/AlP/A shows an excellent smoke suppression performance. For example, the smoke production rate is 0.017 m 2 Á g −1 that has been decreased by 72.1%, compared with B/A. The improvement arises from the amorphous AlP layer on brucite, which helps to create a firm and porous protective char layers on the burning EVA composites. Meanwhile, better mechanical property could be simultaneously obtained with the large FR amount. The fluffy surface of B/AlP/A has good compatibility with EVA and tangle more polymer chains, enhancing the mechanical properties. In a word, this simple and convenient method could pave the way for developing a more efficient and cost-effective brucite-based FR.

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The influence of aluminum phosphates on graphite oxidation

Cited by 26 publications

References 16 publications

Enhanced electro-oxidation resistance of carbon electrodes induced by phosphorus surface groups

Enhanced electro-oxidation resistance of carbon electrodes induced by phosphorus surface groups

Influence of hybrid functionalized graphite nanoplatelets-tripolyphosphate on improvement in fire protection of intumescent fire resistive coating for steel structures

Aluminum phosphate modified brucite and its flame retardant and smoke suppression performance on ethylene‐vinyl acetate resin

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