Corrosion of carbon support for PEM fuel cells by electrochemical quartz crystal microbalance

Hung, Chih-Cheng; Lim, P.Y.; Chen, Jiann‐Ruey; Shih, Han C.

doi:10.1016/j.jpowsour.2010.07.015

Cited by 51 publications

(42 citation statements)

References 28 publications

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“…Hence, the composite is prone to deterioration in the PEM fuel cell environment which can decrease the electrical performance with time. The susceptibility of MWNTs to electrochemical oxidation in PEM fuel cell environments has been recognized by several authors, especially at high potentials [22,23]. The results obtained in this work evidence that the deterioration of the corrosion resistance of MWNT-added ABSegraphite composites can take place even though electrochemical oxidation was not perceived to be relevant for the electrical conductivity of the composites according to the experimental conditions employed here.…”

Section: Time (Days)supporting

confidence: 54%

“…Shao et al [22] explained this behavior by the difficult access of oxygen atoms to the closed rolled up coaxial graphene sheets of carbon nanotubes. Hung et al [23] used electrochemical quartz crystal microbalance to assess the mass change induced by corrosion of carbon blacks and MWNTs in deaerated H 2 SO 4 solution at room temperature. They showed that the highly ordered graphitic structure of MWNTs provided better corrosion resistance than the more amorphous conventional carbon black particles.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion and thermal stability of multi-walled carbon nanotube–graphite–acrylonitrile–butadiene–styrene composite bipolar plates for polymer electrolyte membrane fuel cells

Oliveira

Ett

Antunes

2013

Journal of Power Sources

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h i g h l i g h t s < Development of ABSegraphiteeMWNT composite bipolar plates. < EIS successfully applies for understanding the corrosion mechanism of the composites. < MWNT concentration strongly affects the corrosion behavior of the ABSegraphite composites. < The best balance of properties was for the ABS-graphite composite with addition of 2 wt.% MWNT. a b s t r a c tComposite bipolar plates based on the proper mixing of multi-walled carbon nanotubes (MWNTs), synthetic graphite particles and acrylonitrileebutadieneestyrene (ABS) powder have been produced by hot compression molding. The corrosion properties of the molded plates were assessed through electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves. Through-plane and in-plane electrical conductivities were determined. The relevance of electrochemical oxidation to the electrical conductivity of the composites was assessed by cyclic voltammetry. Thermal stability of the composites was examined by thermogravimetric analysis (TGA). The morphology of fractured surfaces of the plates was observed by scanning electron microscopy. The incorporation of MWNTs increased the inplane and through-plane electrical conductivity of the ABSegraphite composites. There was, though, a corresponding reduction of the corrosion resistance. The thermal behavior was little affected by the addition of MWNTs.

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Section: Time (Days)supporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Corrosion and thermal stability of multi-walled carbon nanotube–graphite–acrylonitrile–butadiene–styrene composite bipolar plates for polymer electrolyte membrane fuel cells

Oliveira

Ett

Antunes

2013

Journal of Power Sources

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“…Consequently, a measurable property of the electrocatalyst such as the electrochemical surface area (ECSA) of the supported Pt particles is often related to a parameter of the corrosion treatment, such as number of CVs [25,26,30], potential pulses [20] or potential hold time [22,32], analogous to in situ AST approaches. These methodologies have also been enhanced by utilising analytical techniques such as transmission electron microscopy (TEM) [25,26], secondary electron microscopy (SEM) [21], atomic force microscopy (AFM) [30,32], X-ray photoelectron microscopy (XPS) [20,30,32] and EQCM [24]. Alternatively, corrosion half-cell studies may also focus on the dissolution of pure Pt electrodes [33].…”

Section: Introductionmentioning

confidence: 99%

Comparative DEMS study on the electrochemical oxidation of carbon blacks

Ashton

Arenz

2012

Journal of Power Sources

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“…Moreover, other catalyst supports [19,20] including inorganic compounds or composite supports have been used to mitigate the negative influence of carbon corrosion [21][22][23] on fuel cell performance.…”

Section: Introductionmentioning

confidence: 99%

Effects of Carbonization Temperature and Time during Carbon Riveting Process on the Stability of Pt/C Catalyst

et al. 2014

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Effects of carbonization temperature and time during carbon riveting process on the stability of Pt/C catalysts have been investigated systematically. X‐ray diffraction, transmission electron microscopy, cyclic voltammograms, and accelerated potential cycling tests have been performed to characterize the catalysts. The experimental results show that the activity of the riveted Pt/C catalyst decreases with the increasing of the heat‐treated temperature and the extension of heat‐treated time due to sintering of Pt nanoparticles. The stability of the carbon riveted Pt/C catalysts exhibits the increasing trend with the increase of the carbonization time and temperature. Considering both of the activity and stability of the riveted Pt/C catalysts, the optimized carbonization temperature and time are 400 °C and 60 min for a Pt/VulcanXC‐72 catalyst with starting particle size before carbonization of 2.2 nm and 20 wt% platinum loading, respectively.

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Corrosion of carbon support for PEM fuel cells by electrochemical quartz crystal microbalance

Cited by 51 publications

References 28 publications

Corrosion and thermal stability of multi-walled carbon nanotube–graphite–acrylonitrile–butadiene–styrene composite bipolar plates for polymer electrolyte membrane fuel cells

Corrosion and thermal stability of multi-walled carbon nanotube–graphite–acrylonitrile–butadiene–styrene composite bipolar plates for polymer electrolyte membrane fuel cells

Comparative DEMS study on the electrochemical oxidation of carbon blacks

Effects of Carbonization Temperature and Time during Carbon Riveting Process on the Stability of Pt/C Catalyst

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