نتایج جستجو برای: pyrolytic graphite electrode

تعداد نتایج: 78440  

Journal: :Epj Web of Conferences 2023

The thickness and uniformity characterisation of the first prototypes thin tellurium germanium targets evaporated on Highly Oriented Pyrolytic Graphite for NUMEN project is reported. contribution such to energy resolution reaction ejectiles evaluated.

Journal: :Journal of the American Chemical Society 2006
Jian-Ru Gong Hui-Juan Yan Qun-Hui Yuan Li-Ping Xu Zhi-Shan Bo Li-Jun Wan

This communication provides a facile method for distributing and dispersing molecules within a molecular template. Using the self-assembled template of oligo(phenylene-ethynylene) (OPE), organic molecules such as coronene (COR) and biomolecules such as tripeptide are controllably distributed and dispersed within this molecular template on highly oriented pyrolytic graphite (HOPG) surfaces. COR ...

2013
X. Tang X. Li Y. Wang K. Wepasnick A. Lim D. H. Fairbrother K. H. Bowen A. K. Kandalam

Size selected metal oxide, sulfide and oxynitride clusters, soft-landed onto highly ordered pyrolytic graphite (HOPG) at room temperature, have been studied in this work. Based on their size and chemical compositions, the deposited clusters have exhibited various surface structures as illustrated by in situ Scanning Tunnelling Microscope (STM) and ex situ Atomic Force Microscope (AFM). In contr...

2010
Annemarie Meyer Eva Sigmund Friedhelm Luppertz Gregor Schnakenburg Immanuel Gadaczek Thomas Bredow Stefan-S Jester Sigurd Höger

A series of dithienophenazines with different lengths of the oligomeric thiophene units (quaterthiophenes and sexithiophenes) was synthesized. The thiophene and phenazine units act as electron donors and acceptors, respectively, resulting in characteristic absorption spectra. The optical spectra were calculated using time-dependent density functional theory at the B3LYP/TZVP level and verify th...

Journal: :Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry 1970

Journal: :journal of nanostructures 2015
y. zeraatkish m. jafarian m. g. mahjani

electrochemical properties of various rock-shaped-cuo/graphite (g) composites and monoclinic structure cuo nanoparticles as the cathode versus a zinc plate as the anode in a 4m naoh electrolyte were elucidated by electrochemical impedance spectroscopy (eis) and chronopotentiometry (cp) in a two electrode configuration cell. various values of g 9, 16 and 28 wt% were prepared and studied as catho...

2017
Brandon Pollack Sunshine Holmberg Derosh George Ich Tran Marc Madou Maziar Ghazinejad

Catalytic substrate, which is devoid of expensive noble metals and enzymes for hydrogen peroxide (H₂O₂), reduction reactions can be obtained via nitrogen doping of graphite. Here, we report a facile fabrication method for obtaining such nitrogen doped graphitized carbon using polyacrylonitrile (PAN) mats and its use in H₂O₂ sensing. A high degree of graphitization was obtained with a mechanical...

Journal: :Chemical communications 2014
Vladimir V Korolkov Simon A Svatek Stephanie Allen Clive J Roberts Saul J B Tendler Takashi Taniguchi Kenji Watanabe Neil R Champness Peter H Beton

A two-dimensional porous network formed from perylene tetracarboxylic diimide (PTCDI) and melamine may be deposited from solution on the surfaces of highly oriented pyrolytic graphite (HOPG), hexagonal boron nitride (hBN) and molybdenum disulphide (MoS2). Images acquired using high resolution atomic force microscopy (AFM) operating under ambient conditions have revealed that the network forms e...

Journal: :Chemical communications 2011
Stefan-S Jester Daniela Schmitz Friederike Eberhagen Sigurd Höger

Rigid rod oligo(phenylene-ethynylene-butadiynylene)s (oPEBs), "half-rings" of two rigid rods connected via a molecular clamp unit, and shape-persistent macrocycles (cyclic "half-ring dimers") are synthesized and their self-assembled monolayers (SAMs) are investigated by scanning tunneling microscopy (STM) at the interface of 1,2,4-trichlorobenzene (TCB)/highly oriented pyrolytic graphite (HOPG)...

Journal: :Physical chemistry chemical physics : PCCP 2014
Sanketh R Gowda Kevin G Gallagher Jason R Croy Martin Bettge Michael M Thackeray Mahalingam Balasubramanian

It is well known that Li-ion cells containing manganese oxide-based positive electrodes and graphite-based negative electrodes suffer accelerated capacity fade, which has been attributed to the deposition of dissolved manganese on the graphite electrodes during electrochemical cell cycling. However, the reasons for the accelerated capacity fade are still unclear. This stems, in part, from confl...

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