Energietechnologie: Elektrochemie gegen Wärmekraftmaschinen – ein Tribut an Wilhelm Ostwalds visionäre Aussagen

As redox‐active based supercapacitors are known as highly desirable next‐generation supercapacitor electrodes, the targeted design of two ferrocene‐functionalized (Fc(COOH)2) clusters based on coinage metals, [(PPh3)2AgO2CFcCO2Ag(PPh3)2]2⋅7 CH3OH (SC1: super capacitor) and [(PPh3)3CuO2CFcCO2Cu(PPh3)3]⋅3 CH3OH (SC2), is reported. Both structures are fully characterized by various techniques. The structures are utilized as energy storage electrode materials, giving 130 F g−1 and 210 F g−1 specific capacitance at 1.5 A g−1 in Na2SO4 electrolyte, respectively. The obtained results show that the presence of CuI instead of AgI improves the supercapacitive performance of the cluster. Further, to improve the conductivity, the PSC2 ([(PPh3)2CuO2CFcCO2]∞), a polymeric structure of SC2, was synthesized and used as an energy storage electrode. PSC2 displays high conductivity and gives 455 F g−1 capacitance at 3 A g−1. The PSC2 as a supercapacitor electrode presents a high power density (2416 W kg−1), high energy density (161 Wh kg−1), and long cycle life over 4000 cycles (93 %). These results could lead to the amplification of high‐performance supercapacitors in new areas to develop real applications and stimulate the use of the targeted design of coordination polymers without hybridization or compositions with additive materials.

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Comparative Study of the Supercapacitive Performance of Three Ferrocene‐Based Structures: Targeted Design of a Conductive Ferrocene‐Functionalized Coordination Polymer as a Supercapacitor Electrode

Miao

Rouhani

Moghanni‐Bavil‐Olyaei

et al. 2020

Chemistry A European J

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Carbon Monoxide Oxidation on Pt Single Crystal Electrodes: Understanding the Catalysis for Low Temperature Fuel Cells

2011

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Herein the general concepts of fuel cells are discussed, with special attention to low temperature fuel cells working in alkaline media. Alkaline low temperature fuel cells could well be one of the energy sources in the next future. This technology has the potential to provide power to portable devices, transportation and stationary sectors. With the aim to solve the principal catalytic problems at the anode of low temperature fuel cells, a fundamental study of the mechanism and kinetics of carbon monoxide as well as water dissociation on stepped platinum surfaces in alkaline medium is discussed and compared with those in acidic media. Furthermore, cations involved as promoters for catalytic surface reactions are also considered. Therefore, the aim of the present work is not only to provide the new fundamental advances in the electrocatalysis field, but also to understand the reactions occurring at fuel cell catalysts, which may help to improve the fabrication of novel electrodes in order to enhance the performance and to decrease the cost of low temperature fuel cells.

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Energietechnologie: Elektrochemie gegen Wärmekraftmaschinen – ein Tribut an Wilhelm Ostwalds visionäre Aussagen

Cited by 2 publications

References 35 publications

Comparative Study of the Supercapacitive Performance of Three Ferrocene‐Based Structures: Targeted Design of a Conductive Ferrocene‐Functionalized Coordination Polymer as a Supercapacitor Electrode

Comparative Study of the Supercapacitive Performance of Three Ferrocene‐Based Structures: Targeted Design of a Conductive Ferrocene‐Functionalized Coordination Polymer as a Supercapacitor Electrode

Carbon Monoxide Oxidation on Pt Single Crystal Electrodes: Understanding the Catalysis for Low Temperature Fuel Cells

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