Browsing by Subject "Platinum alloys"

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 ...

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 ...

Excavated and dendritic Pt-Co nanocubes as efficient ethylene glycol and glycerol oxidation electrocatalysts

Du H., Wang K., Tsiakaras P., Shen P.K. (2019)

Noble metal electrocatalysts with excavated and dendritic architectures have recently attracted growing attention for their large accessible surface areas and high density of under-coordinated atoms. However, it is a tough ...

Facile synthesis of bimetallic Pt-Pd symmetry-broken concave nanocubes and their enhanced activity toward oxygen reduction reaction

Wu R., Tsiakaras P., Shen P.K. (2019)

In the present work, we are reporting a facile one-pot synthesis route to get Pt-Pd symmetry-broken concave nanocube (SBCNCs) structures in N, N-dimethylformamide (DMF) solutions under the effect of iodide ions and Poly ...

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 ...

High surface area tungsten carbide microspheres as effective Pt catalyst support for oxygen reduction reaction

Wang, Y.; Song, S.; Maragou, V.; Shen, P. K.; Tsiakaras, P. (2009)

In the present work, the preparation of high surface area (256 m2 g-1) tungsten carbide microspheres (TCMSs) by the aid of a simple hydrothermal method is realized and the performance of the Pt electrocatalyst supported ...

Highly efficient electrocatalysts for oxygen reduction reaction: Nitrogen-doped PtNiMo ternary alloys

Luo L., Abbo H.S., Titinchi S.J.J., Tsiakaras P., Yin S. (2019)

The relatively low efficiency of the reaction of oxygen reduction (ORR) remains among the main obstacles for hydrogen fed proton exchange membrane fuel cells (H-PEMFCs) commercialization. In the present work, PtNiMo ternary ...

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 ...

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 ...

Shell-thickness-dependent Pd@PtNi core–shell nanosheets for efficient oxygen reduction reaction

Chen Q., Chen Z., Ali A., Luo Y., Feng H., Luo Y., Tsiakaras P., Kang Shen P. (2022)

Platinum-based ultrathin core–shell nanosheets catalyst with moderate shell thickness have great potential to solve the problems of highly active catalyst for oxygen reduction reaction (ORR) within proton exchange membrane ...

Study of the products distribution during a direct ethanol PEM fuel cell operation

Andreadis, G.; Song, S.; Tsiakaras, P. (2011)

In the present work the effect of both cell discharge current and operating temperature on (a) the ethanol conversion, (b) the reaction products distribution and (c) the reaction yield towards each released product, during ...

ZIF-Mg(OH)2 Dual Template Assisted Self-Confinement of Small PtCo NPs as Promising Oxygen Reduction Reaction in PEM Fuel Cell

Chen Z., Hao C., Yan B., Chen Q., Feng H., Mao X., Cen J., Tian Z.Q., Tsiakaras P., Shen P.K. (2022)

Traditional calcination usually causes sintering of Pt, which diminishes Pt exposure in proton exchange membrane fuel cell (PEMFC) electrodes. In the present work, a facile self-confined method for synthesizing highly ...