International Journal of Hydrogen Energy
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#1Jing-Yi Xie (China University of Petroleum)H-Index: 12
#2Ruo-Yao Fan (China University of Petroleum)H-Index: 1
Last. Bin Dong (China University of Petroleum)H-Index: 54
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Abstract Rationally designing high-activity catalyst for oxygen evolution reaction (OER) is of primary importance due to its sluggish kinetic process in water splitting. Herein, we report a metallic (V) and nonmetallic (F) double doping in Co3O4 with nanoneedles structure, which is synthesized through facile oil bath and annealing. Electrochemical measurements show that the Co3O4 dopped with fluorine and vanadium (F0.2-V-Co3O4-350) only needs a low overpotential of 320 mV to afford a current den...
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#1El Mahdi Halim (University of Paris)H-Index: 4
#2Hubert Perrot (University of Paris)H-Index: 25
Last. Mama El RhaziH-Index: 12
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Abstract The development of highly efficient catalysts using inexpensive and earth-abundant metals is a crucial factor in a large-scale commercialization of direct methanol fuel cells (DMFCs). In this study, we explored a new catalyst based on copper nanodendrites (CuNDs) supported on carbon nanofibers/poly (para-phenylenediamine) (CNF/PpPD) nanocomposite for methanol oxidation reaction (MOR). The catalyst support was prepared on a carbon paste electrode by electropolymerization of para-phenylen...
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Abstract The oxygen surface kinetics and mechanism of oxygen interaction between oxygen from the gas phase and yttria-stabilised zirconia nano-sized powder have been studied by pulse 18O/16O isotope exchange (PIE) in dry (O2) and humid (mixture O2 + H2O with pH2O = 2.6 kPa at T = 22 °C) oxygen atmospheres in comparison with micro-sized powder. Dependences of the heterogeneous oxygen exchange rate (rH) in the temperature range from 550 to 900 °C, and oxygen partial pressure range in the carrier g...
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#1Yunus YıldızH-Index: 19
#2Sultan KuzuH-Index: 9
Last. Fatih ŞenH-Index: 29
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Abstract The design of new supramolecular complexes and metal-organic frameworks (MOFs) as water-oxidizing catalysts requires the stability studies because many metal-organic compounds are decomposed under the harsh conditions of water oxidation. Metal-organic frameworks have been extensively reported as catalysts for water splitting toward hydrogen production. Recently, a NiFe MOF has been claimed as an excellent catalyst for oxygen-evolution reaction (OER) under alkaline conditions (KOH (1.0 M...
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#1Kamran Ghasemzadeh (Urmia University of Technology)H-Index: 15
#2Milad Ghahremani (Urmia University of Technology)H-Index: 1
Last. Adolfo Iulianelli (National Research Council)H-Index: 35
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Abstract A comprehensive computational fluid dynamic model has been developed using COMSOL Multiphysics 5.4 software to predict the behavior of a membrane reactor in dehydrogenation of methylcyclohexane for hydrogen production. A reliable reaction kinetic of dehydrogenation reaction and a permeation mechanism of hydrogen through silica membrane have been used in computational fluid dynamic modeling. For performance comparison, an equivalent traditional fixed bed reactor without hydrogen removal ...
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Abstract Hydrogen production from water splitting is highly desired for the green and clean energy device but remains a great challenge. In this regard, cobalt-phthalocyanine (PyCoPc) and composite of PyCoPc with graphene oxide (GO) were fabricated and used as catalyst for the energy conversion. The as-synthesized PyCoPc/GO exhibits an efficient hydrogen evolution reaction due to the low overpotential ~253 mV at a 10 mA cm−2 current density with a Tafel slope ~96 mV dec−1 in alkaline media. Our ...
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#1Yan CaoH-Index: 11
#1Yan CaoH-Index: 2
Last. Naeim Farouk (Red Sea University)H-Index: 1
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Abstract Most of the gas species in the air entering the fuel cell through the cathode electrode is nitrogen. Nitrogen recognizes as the only reactant inside the fuel cell stack that remains unchanged during its internal chemical and electrochemical processes. Owing to this specific behavior of nitrogen, this study investigates the performance of two types of solid oxide fuel cells with different electrolytes (oxygen-ion conducting and proton conducting) and their electricity generation applicat...
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#1Meiting Guo (USTC: University of Science and Technology of China)H-Index: 1
#2Zijing Lin (USTC: University of Science and Technology of China)H-Index: 17
Abstract Mechanical performance analysis is important for ensuring the long-term reliability of solid oxide fuel cells (SOFCs). Thermal-mechanical models are constructed to conduct time-dependent mechanical performance analysis of SOFC stack with temperature field obtained by multiphysics modeling. The volume-averaged temperature field is used as comparison. The creep strains are examined with a time step of 10 h for 10,000 h. It reveals: (1) Uniform temperature significantly decreases the stres...
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Catalysis
Inorganic chemistry
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