Πλοήγηση ανά Θέμα "Methanol"

Cross-double dumbbell-like Pt–Ni nanostructures with enhanced catalytic performance toward the reactions of oxygen reduction and methanol oxidation

Gong W., Jiang Z., Wu R., Liu Y., Huang L., Hu N., Tsiakaras P., Shen P.K. (2019)

Investigating on well-defined structure-engineering and atomic arrangement of fuel cell catalysts with high activity has attracted considerable research interest the last decade. Specially, unique nanostructures, which ...

Direct alcohol fuel cells: Challenges and future trends

Brouzgou, A.; Tzorbatzoglou, F.; Tsiakaras, P. (2011)

Among the most considered future alternative energy conversion systems are fuel cells. A fuel cell is an electrochemical device that continuously and directly converts chemical energy to electricity with the most common ...

The effect of methanol and ethanol cross-over on the performance of PtRu/C-based anode DAFCs

Song, S.; Zhou, W.; Liang, Z.; Cai, R.; Sun, G.; Xin, Q.; Stergiopoulos, V.; Tsiakaras, P. (2005)

In the present work, the cross-over rates of methanol and ethanol, respectively, through Nafion®-115 membranes at different temperatures and different concentrations have been measured and compared. The changes of Nafion®-115 ...

The effect of microwave operation parameters on the electrochemical performance of Pt/C catalysts

Song, S.; Liu, J.; Shi, J.; Liu, H.; Maragou, V.; Wang, Y.; Tsiakaras, P. (2011)

In the present work, the effect of the microwave operation parameters on the heating behaviour of ethylene glycol (EG) solution and thereafter on the physicochemical and electrochemical properties of Pt/C catalysts have ...

Efficient Pt-free electrocatalyst for oxygen reduction reaction: Highly ordered mesoporous N and S co-doped carbon with saccharin as single-source molecular precursor

Hua Y., Jiang T., Wang K., Wu M., Song S., Wang Y., Tsiakaras P. (2016)

Despite that nitrogen (N) and sulfur (S) co-doped ordered mesoporous carbon (OMC) as Pt-free catalyst for oxygen reduction reaction (ORR) shows a desirable performance, the synthesis method is always complicated and ...

Enhanced oxygen reduction and methanol oxidation reaction over self-assembled Pt-M (M = Co, Ni) nanoflowers

Li X., Liu Y., Zhu J., Tsiakaras P., Shen P.K. (2022)

Herein, we introduce a facile approach to synthesize a unique class of Pt-M (M = Ni, Co) catalysts with a nanoflower structure for boosting both oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR). By ...

A facile soft-template synthesis of ordered mesoporous carbon/tungsten carbide composites with high surface area for methanol electrooxidation

Wang, Y.; He, C.; Brouzgou, A.; Liang, Y.; Fu, R.; Wu, D.; Tsiakaras, P.; Song, S. (2012)

Ordered 2D hexagonal mesoporous carbon/tungsten carbide (OMC/WC) composite nanomaterials have been successfully synthesized for the first time by the soft-template method with ammonium metagungstate as tungsten precursor ...

Hierarchically skeletal multi-layered Pt-Ni nanocrystals for highly efficient oxygen reduction and methanol oxidation reactions

Li S., Tian Z.Q., Liu Y., Jang Z., Hasan S.W., Chen X., Tsiakaras P., Shen P.K. (2021)

Pt based materials are the most efficient electrocatalysts for the oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) in fuel cells. Maximizing the utilization of Pt based materials by modulating their ...

Highly stable cathodes for proton exchange membrane fuel cells: Novel carbon supported Au@PtNiAu concave octahedral core-shell nanocatalyst

Feng H., Luo Y., Yan B., Guo H., He L., Qun Tian Z., Tsiakaras P., Kang Shen P. (2022)

Despite the remarkable research efforts, the lack of ideal activity and state-of-the-art electrocatalysts remains a substantial challenge for the global application of fuel cell technology. Herein, is reported the synthesis ...

An investigation of WC stability during the preparation of Pt@WC/OMC via a pulse microwave assisted polyol method

Wang, K.; Pan, Z.; Tzorbatzoglou, F.; Zhang, Y.; Wang, Y.; Tsiakaras, P.; Song, S. (2015)

In the present work, the WC stability during the preparation of Pt@WC/OMC (Ordered Mesoporous Carbon) electrocatalysts, through a pulse microwave-assisted polyol method, is investigated by the aid of X-ray diffraction and ...

Molybdenum-modified and vertex-reinforced quaternary hexapod nano-skeletons as efficient electrocatalysts for methanol oxidation and oxygen reduction reaction

Huang L., Wei M., Hu N., Tsiakaras P., Kang Shen P. (2019)

Noble metal binary and ternary catalysts have become a new class of fuel cell electrocatalysts due to their high catalytic activity. However, improvement is still necessary to reduce the consumption of Pt and obtain the ...

A novel sulfur-nitrogen dual doped ordered mesoporous carbon electrocatalyst for efficient oxygen reduction reaction

Jiang T., Wang Y., Wang K., Liang Y., Wu D., Tsiakaras P., Song S. (2016)

Despite nitrogen doped carbon (NC) materials as metal-free electrocatalysts for oxygen reduction reaction (ORR) have shown desirable performance, the state-of-the-art of NC materials is still far from satisfaction for ...

Ordered mesoporous tungsten carbide/carbon composites promoted Pt catalyst with high activity and stability for methanol electrooxidation

Wang, K.; Wang, Y.; Liang, Z.; Liang, Y.; Wu, D.; Song, S.; Tsiakaras, P. (2014)

The current anode materials used for direct methanol fuel cells (DMFCs) are expensive and not sufficiently durable for commercial development. One of the major challenges lies in the development of an inexpensive, efficient ...

Pt/CN-doped electrocatalysts: Superior electrocatalytic activity for methanol oxidation reaction and mechanistic insight into interfacial enhancement

Long G.-F., Li X.-H., Wan K., Liang Z.-X., Piao J.-H., Tsiakaras P. (2017)

Nitrogen-doped ordered mesoporous carbon (NOMC) is studied as the support to synthesize a Pt/CN-doped catalyst for methanol oxidation reaction (MOR). The effects of carbon dimension and metal loading are investigated by ...