Effect of Hygroscopic Platinum/Titanium Dioxide Particles in the Anode Catalyst Layer on the PEMFC Performance

Chao, Wen-Kai; Huang, Rong-Hsing; Huang, Chun‐Wei; Hsueh, Kan‐Lin; Shieu, Fuh‐Sheng

doi:10.1149/1.3428725

Cited by 17 publications

(11 citation statements)

References 48 publications

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“…The water contact angle decreased with increasing RGO content, demonstrating improved wettability. Our previous studies indicated that the optimum contact angles on the GDL containing SiO 2 , γ‐Al 2 O 3 , TiO 2 , and ZnO particles were 109°, 117°, 113°, and 116°, respectively, which were comparable with the values obtained for RGO‐2 in the present study.…”

Section: Resultssupporting

confidence: 90%

Reduced graphene oxide–coated anode gas diffusion layer for performance enhancement of proton‐exchange membrane fuel cell

et al. 2019

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Summary In this study, we produced reduced graphene oxide (RGO) by reduction of graphene oxide (GO) in Teflon‐lined autoclave, maintained at 100°C for 12 hours, and coated on the anode gas diffusion layer (GDL) of a proton‐exchange membrane fuel cell (PEMFC) to improve the cell performance. Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy analysis showed the presence of residual oxygen‐containing functional groups in RGO. Field‐emission scanning electron microscopy images revealed the uniform and adequate coating of the GDLs with RGO. The wettability of RGO‐coated GDL was determined by the sessile drop method and has optimum contact angle 117°. The power densities for the membrane electrode assembly (MEA) with RGO coated on the anode GDL were 30.92%, 41%, and 36.20% higher than those for the MEA without the RGO coating at anode gas humidified temperatures of 25°C, 45°C, and 65°C, respectively.

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Section: Resultssupporting

confidence: 90%

Reduced graphene oxide–coated anode gas diffusion layer for performance enhancement of proton‐exchange membrane fuel cell

et al. 2019

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“…Therefore, much attention has been focus to electrode modification to enhance its electrochemical properties. [7][8][9][10][11][12][13][14] Several alternative electrode materials have been proposed to improve electrode performance, such as metal electrodeposition on carbon fibers. Various metal compounds have also been deposited on graphite fibers to improve the catalytic activity for vanadium redox couples and to enhance electrode stability in acidic vanadium solution.…”

mentioning

confidence: 99%

Carbon Felt Coated with Titanium Dioxide/Carbon Black Composite as Negative Electrode for Vanadium Redox Flow Battery

Tseng

Huang

et al. 2014

J. Electrochem. Soc.

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This investigation focuses on the effect of titanium dioxide (TiO 2 ) coatings of a carbon black (XC-72) negative electrode on the performance of a vanadium redox flow battery (VRFB). TiO 2 , a hydrophilic material, was added to the carbon electrode to improve the wettability and reduce the electrical resistance of the electrode surface. The electrochemical performances of homemade TiO 2 , commercial TiO 2 , and carbon felt are investigated by using cyclic voltammetry and single-cell charge-discharge measurements. An electrode with 20 wt% of fabricated TiO 2 loading at a scan rate of 0.006 V s −1 shows a specific capacitance (C s,t ) of 186.2 F g −1 , which is 55.5% and 12.2% higher than that of pure carbon electrode (119.7 F g −1 ) and commercial TiO 2 (166.0 F g −1 ), respectively. At current density of 200 mA cm −2 , the energy storage efficiency (η E = 65.4%) of the single cell with 20 wt% homemade TiO 2 /C-containing carbon felt negative electrode is 16.0% and 6.1% higher than that of the negative electrode with raw carbon felt (η E = 56.4%) and of the negative electrode containing commercial TiO 2 /C (η E = 61.6%), respectively. These results demonstrate the potential application of TiO 2 /C electrodes for high-efficiency VRFBs at high current densities. Vanadium redox flow battery (VRFB) has been proposed as a promising candidate for large scale energy storage applications, such as load-leveling applications. VRFB can store and stabilize intermittent electricity generated from wind turbine or photovoltaic. VRBF has several advantages over other types of batteries, such as excellent electrochemical reversibility, high roundtrip efficiency, flexible, and negligible cross-contamination between positive and negative electrolytes.1-5 VRFB employs V(IV)/V(V) and V(II)/V(III) redox couples as positive and negative half-cells, respectively, with the standard open circuit cell potential approximate 1.26 V at 100% state of charge. 6Carbon felt is a typical electrode material and it has wide operating electrode potential range, chemically stable, high surface area, and reasonable price. However, carbon felt electrode shows poor electrochemical activity. Therefore, much attention has been focus to electrode modification to enhance its electrochemical properties. [7][8][9][10][11][12][13][14] Several alternative electrode materials have been proposed to improve electrode performance, such as metal electrodeposition on carbon fibers. Various metal compounds have also been deposited on graphite fibers to improve the catalytic activity for vanadium redox couples and to enhance electrode stability in acidic vanadium solution. In the literature, metal compounds deposited on carbon felts include IrO 2, 9 Ru(O 2 ), 10 and Ir, 11 whereas others include partial modification of the functional groups on the graphite surface.12,13 The coating of metal nanoparticles on the fiber of carbon felt is a promising approach. Recently, transition metal oxides, e.g. TiO 2 , ZnO, have been studied extensively as a water adsorbent for improv...

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“…There are several ways to control the water balance in PEMFCs including development of self-humidifying composite membranes [3][4][5][6][7][8], improvement of catalyst layer [9][10][11][12][13][14][15][16][17][18][19][20], and optimization of the gas diffusion layers (GDLs) [21][22][23]. Up to now, several researchers have successfully improved the water balance in PEMFCs by optimizing the component and structure of catalyst layers.…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, several researchers have successfully improved the water balance in PEMFCs by optimizing the component and structure of catalyst layers. Adding hydrophilic oxides to the anode catalyst layer turns out to be an effective way in improving cell performance under low humidification and high temperature operation conditions [9][10][11][12]. Han et al designed a self-humidified anode by adding silica (20-30 nm) into Nafion matrix of anode [10], and they observed that the cell performances increased with the increase of silica content in anodes from 0 to 6 wt.% at 60°C under the condition of without external humidification.…”

Section: Introductionmentioning

confidence: 99%

“…Han et al designed a self-humidified anode by adding silica (20-30 nm) into Nafion matrix of anode [10], and they observed that the cell performances increased with the increase of silica content in anodes from 0 to 6 wt.% at 60°C under the condition of without external humidification. Chao et al investigated the performance of PEMFCs by adding Pt/TiO 2 particle into the anode catalyst layer and they demonstrated the best cell performance was obtained with 5 wt.% Pt/TiO 2 particle addition at temperatures of anode humidifier ranging from 25 to 75°C [11]. Since water is produced at the cathode side during the fuel cell process, the water flooding at the cathode may happen.…”

Section: Introductionmentioning

confidence: 99%

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Design and investigation of dual-layer electrodes for proton exchange membrane fuel cells

et al. 2014

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Effect of Hygroscopic Platinum/Titanium Dioxide Particles in the Anode Catalyst Layer on the PEMFC Performance

Cited by 17 publications

References 48 publications

Reduced graphene oxide–coated anode gas diffusion layer for performance enhancement of proton‐exchange membrane fuel cell

Reduced graphene oxide–coated anode gas diffusion layer for performance enhancement of proton‐exchange membrane fuel cell

Carbon Felt Coated with Titanium Dioxide/Carbon Black Composite as Negative Electrode for Vanadium Redox Flow Battery

Design and investigation of dual-layer electrodes for proton exchange membrane fuel cells

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