نتایج جستجو برای: electrochemical properties

تعداد نتایج: 911496  

Massoud Fazli S. Mehdi Golabi Yousef Rastegar Mirzaei

The electrochemical behavior of nifedipine (I), nitrendipine(II) and their photodegradation products has been studied by employing electrochemical techniques in chloroform and in 1:4 mixture of chloroform-isopropanol using piperidinium perchlorate (PPC) as supporting electrolyte. It has been shown that I and II undergo in a 4e, 4H+ irreversible reduction reaction, while the reduc...

Journal: :Journal of synchrotron radiation 2012
Anke Hagen Marie Lund Traulsen Wolff Ragnar Kiebach Bjoern Sejr Johansen

Solid oxide fuel cells (SOFCs) are able to produce electricity and heat from hydrogen- or carbon-containing fuels with high efficiencies and are considered important cornerstones for future sustainable energy systems. Performance, activation and degradation processes are crucial parameters to control before the technology can achieve breakthrough. They have been widely studied, predominately by...

Journal: :Physical chemistry chemical physics : PCCP 2013
Hugo Nolan Niall McEvoy Gareth P Keeley Stephen D Callaghan Cormac McGuinness Georg S Duesberg

Nitrogen-doped Pyrolytic Carbon (N-PyC) films were employed as an electrode material in electrochemical applications. PyC was grown by via non-catalysed chemical vapour deposition and subsequently functionalised via exposure to ammonia-hydrogen plasma. The electrochemical properties of the N-PyC films were investigated using the ferri/ferro-cyanide and hexaamine ruthenium(III) chloride redox pr...

1999
Hongge Pan Yun Chen Chunsheng Wang Xinhua Wang Changpin Chen Qidong Wang

In this paper the effect of concentration of KOH solution containing 0.02 M borohydride on the electrochemical properties of Ml(NiCoAl) hydrogen storage alloys, including the high rate dischargeability, exchange current density I , limiting current density I , 5 0 L and diffusion of hydrogen in the hydride, by means of linear polarization, anodic polarization, cathodic polarization, and electro...

Journal: :Accounts of chemical research 2017
Yujie Zhu Tao Gao Xiulin Fan Fudong Han Chunsheng Wang

Understanding of the thermodynamic and kinetic properties of electrode materials is of great importance to develop new materials for high performance rechargeable batteries. Compared with computational understanding of physical and chemical properties of electrode materials, experimental methods provide direct and convenient evaluation of these properties. Often, the information gained from exp...

Journal: :physical chemistry and electrochemistry 0

a new schiff base 2-aminothiophenol furfural self assembled monolayer (sam) has been fabricated on a bare gold electrode as a novel sensor for determination of dopamine. electrochemical impedance spectroscopywas utilized to investigate the properties of the au 2-aminothiophenol furfural self assembled monolayermodified electrode (au atf sam-me) using the [fe(cn)6]3-/4- redox couple. the electro...

2015
Mengning Ding Qiyuan He Gongming Wang Hung-Chieh Cheng Yu Huang Xiangfeng Duan

In situ monitoring electrochemical interfaces is crucial for fundamental understanding and continued optimization of electrocatalysts. Conventional spectroscopic techniques are generally difficult to implement for in situ electrochemical studies. Here we report an on-chip electrical transport spectroscopy approach for directly probing the electrochemical surfaces of metallic nanocatalysts in ac...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2005
Kuanping Gong Yiming Yan Meining Zhang Lei Su Shaoxiang Xiong Lanqun Mao

This review addresses recent developments in electrochemistry and electroanalytical chemistry of carbon nanotubes (CNTs). CNTs have been proved to possess unique electronic, chemical and structural features that make them very attractive for electrochemical studies and electrochemical applications. For example, the structural and electronic properties of the CNTs endow them with distinct electr...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

recent progress in nanotechnology and electrochemical methods can be applied to fine control of the size, crystal structure, and surface properties of iron oxide nanoparticles. here we appliedcathodic electrochemical deposition (ced) as an efficient and effective tactic for synthesisand double coating of surface of superparamagnetic iron oxide nanoparticles (spions). in first step, bare fe3o4 n...

Journal: :Organic & biomolecular chemistry 2012
Ganapathy Balaji Andrea M Della Pelle Bhooshan C Popere A Chandrasekaran S Thayumanavan

We report the syntheses and properties of thienopyrrole based unsymmetrical and extended heteroacenes, which are isoelectronic with heptacene (30π) and nonacene (38π), respectively. Optical and electrochemical properties of these seven and nine rings fused systems are studied. The optoelectronic properties of the syn and anti-isomers of the unsymmetrical heteroacenes are also compared. The infl...

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