Sn-doped TiO2 modified carbon to support Pt anode catalysts for direct methanol fuel cells

Li, Yabei; Liu, Chuntao; Li, Yanying; Feng, Bo; Li, Li; Pan, Hengyu; Kellogg, Williams; Higgins, Drew; Wu, Gang

doi:10.1016/j.jpowsour.2015.03.155

Cited by 79 publications

(36 citation statements)

References 66 publications

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“…This resulted in a slow rate of reduction leading to the performance reduction. This was in agreement with Li (2007) that when zeolite-A loading in the Nafion membrane was increased from 5 to 15 wt%, the methanol permeability decreased from 2.3×10 -6 cm 2 /s to around 1×10 -6 cm 2 /s leading to the worsening performance.…”

Section: Effect Of Mor Content On Power Densitysupporting

confidence: 91%

“…At present, DAFCs are to be improved in several areas for better performance, such as catalysts at the electrodes (Cheng et al, 2015;Jurzinsky et al, 2015;Li et al, 2015), design of flow field (Wu et al, 2016), and proton-exchange membrane (Sha Wang et al, 2015). Nafion is a good candidate for the proton exchange membrane in DAFC because it has a lot of superior properties such as high ionic conductivity (Yoonoo et al, 2011), as well as high thermal and chemical stabilities.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Application of response surface methodology to optimize direct alcohol fuel cell power density for greener energy production

Charoen

Prapainainar

Sureeyatanapas

et al. 2017

Journal of Cleaner Production

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Please cite this article as: Charoen K, Prapainainar C, Sureeyatanapas P, Suwannaphisit T, Wongamornpitak K, Kongkachuichay P, Holmes SM, Prapainainar P, Application of response surface methodology to optimize direct alcohol fuel cell power density for greener energy production, Journal of Cleaner Production (2016Production ( ), doi: 10.1016Production ( /j.jclepro.2016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractEnergy production from direct alcohol fuel cells depends strongly on the operating conditions. In this research, the aim was to find the best conditions of direct methanol fuel cells (DMFC) and direct ethanol fuel cells (DEFC) to obtain the maximum power density with the response surface method using Program Design Expert 7.0.0. M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPTThree related independent variables, including operating temperature in the range of 30-70°C, alcohol flow rate in the range of 5-50 ml/min, and alcohol concentration in the range of 0.5-3 M, were covered. Nafion117 was used as an electrolyte and Pt-Ru and Pt were used as catalysts in anode and cathode, respectively. The effect of those variables on the maximum power density was illustrated in the form of quadratic models which predicted the appropriate operating conditions. The Nafion membrane was modified by adding mordenite (MOR) to improve its alcohol permeability. The result from response revealed that the higher operating temperatures and higher alcohol concentrations led to an increase in maximum power density, in both the DMFC and DEFC. The DMFC had a higher maximum power density and greater current than the DEFC had. This was because methanol was easier to oxidize than ethanol In addition, it was found that the MOR content of 1.47 wt% in the Nafion composite membrane reduced the alcohol permeability

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Section: Effect Of Mor Content On Power Densitysupporting

confidence: 91%

Section: Accepted Manuscriptmentioning

confidence: 99%

Application of response surface methodology to optimize direct alcohol fuel cell power density for greener energy production

Charoen

Prapainainar

Sureeyatanapas

et al. 2017

Journal of Cleaner Production

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“…Relative to conventional carbon materials, transition metal oxide/sulfide catalysts are inherently more stable than carbon in oxidizing environments . Among the various studied oxides, perovskites with a general ABO 3 formula hold the greatest promise to be efficient bifunctional ORR/OER NPMCs .…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Perovskite Oxide Catalysts for Oxygen Reduction and Evolution in Alkaline Media

Gupta

Kellogg

et al. 2015

Chemistry An Asian Journal

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203

134

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Oxygen electrocatalysis, namely of the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), governs the performance of numerous electrochemical energy systems such as reversible fuel cells, metal-air batteries, and water electrolyzers. However, the sluggish kinetics of these two reactions and their dependency on expensive noble metal catalysts (e.g, Pt or Ir) prohibit the sustainable commercialization of these highly innovative and in-demand technologies. Bifunctional perovskite oxides have emerged as a new class of highly efficient non-precious metal catalysts (NPMC) for oxygen electrocatalysis in alkaline media. In this review, we discuss the state-of-the-art understanding of bifunctional properties of perovskites with regards to their OER/ORR activity in alkaline media and review the associated reaction mechanisms on the oxides surface and the related activity descriptors developed in the recent literature. We also summarize the present strategies to modify their electronic structure and to further improve their performance for the ORR/OER through highlighting the new concepts relating to the role of surface redox chemistry and oxygen deficiency of perovskite oxides for the ORR/OER activity. In addition, we provide a brief account of recently developed advanced perovskite-nanocarbon hybrid bifunctional catalysts with much improved performances.

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“…Doping elements involve metals and non‐metals: Mo‐doping can further improve the intrinsic CO tolerance of TiO 2 , and thus the complex could be served as a better support for loading Pt . Li et al . replaced Ti 4+ in TiO 2 lattice with Sn 4+ via a simple solvothermal process to prepare Ti 0.9 Sn 0.1 O 2 solid solution.…”

Section: Ti Si‐based Supportsmentioning

confidence: 99%

Synergistic Supports Beyond Carbon Black for Polymer Electrolyte Fuel Cell Anodes

Huang

Babu

et al. 2018

ChemCatChem

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Polymer electrolyte fuel cells (PEFCs) are among the most advanced energy technologies with low operating temperatures, high energy densities, ease of transportation and storage. However, the deficiencies such as low activity and high cost of the electrocatalysts at anodes greatly hinder their commercialization. The commonly used carbon black supports lack the capacity of regulation over the supported noble metals towards efficient electro‐catalytic oxidation of fuels. In this Mini‐Review, the prerequisite factors in advanced supports are outlined, ranging from self‐supported precious metal alloys as well as non‐noble metal materials, while simultaneously revealing the superiorities of some advanced supports beyond carbon black in terms of electronic conductivity, synergy with surface precious metals, chemical and electrochemical stability, and other possible interactions. The effects arisen from microscopic morphology, nano‐structure, and composition on the electrocatalytic activity/stability are also discussed. Finally, several of the most promising supports are highlighted, and the research trends of synergistic supports in future PEFCs are predicted.

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Sn-doped TiO2 modified carbon to support Pt anode catalysts for direct methanol fuel cells

Cited by 79 publications

References 66 publications

Application of response surface methodology to optimize direct alcohol fuel cell power density for greener energy production

Application of response surface methodology to optimize direct alcohol fuel cell power density for greener energy production

Bifunctional Perovskite Oxide Catalysts for Oxygen Reduction and Evolution in Alkaline Media

Synergistic Supports Beyond Carbon Black for Polymer Electrolyte Fuel Cell Anodes

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