نتایج جستجو برای: nickel ion

تعداد نتایج: 237256  

2016
Roberto Frias

8 This paper addresses different techniques for modelling electrochemical energy storage (ES) devices in insular power 9 network applications supported on real data. The first contribution is a comprehensive performance study between a set of 10 competing electrochemical energy storage technologies: Lithium-ion (Li-ion), Nickel–Cadmium (NiCd), Nickel–Metal 11 Hydride (NiMH) and Lead Acid (PbA) ...

2012
Doina Hritcu Gianina Dodi Marcel Ionel Popa

Composite chitosan-magnetite microparticles (Fe-Cc) were evaluated as a new adsorbent for cobalt and nickel ion separation from aqueous solutions. Sorption batch experiments were conducted for optimizing the pH, initial target ion concentration and adsorbent amount. The experimental data were fitted using Langmuir, Freundlich, and respectively DubininRadushkevich isotherm models. The Langmuir m...

1999
Joe Ho Mark L. Polak W. C. Lineberger

Negative ion photoelectron spectra of Ni, , Pd,, and Pt, are presented for electron binding energies up to 3.35 eV at an instrumental resolution of 8-10 meV. The metal cluster anions are prepared in a flowing afterglow ion source. Each dimer exhibits multiple low-lying electronic states and a vibrationally resolved ground state transition. Franck-Condon analyses yield the anion and neutral vibr...

Journal: :Nanoscale 2012
Gongming Wang Xihong Lu Teng Zhai Yichuan Ling Hanyu Wang Yexiang Tong Yat Li

We report a seed-mediated hydrothermal growth of free-standing nickel hydroxide [Ni(OH)(2)] and nickel oxide (NiO) nanoflake arrays and their implementation as electrodes for non-enzymatic glucose sensors. Ni(OH)(2) nanoflakes were converted into porous NiO nanoflakes upon thermal annealing in air at temperatures of 300 °C or above. NiO nanoflake-arrayed sensors achieve an excellent glucose sen...

2005
Donald A. Palmer Pascale Bénézeth David J. Wesolowski

The solubility of NiO(cr) was measured using flow techniques and a potentiometric method from ca. 0 to 350°C in aqueous solutions as a function of pH. A more limited study of the solubility of -Ni(OH)2(cr) was conducted by both techniques to 200°C. These results indicate that the transition temperature at which nickel hydroxide dehydrates to form the oxide is ca. 75°C, much lower than previousl...

2010
Cheyenne McKibbin Kyle Root

In this study, two species of algae from two different areas impacted by acid mine drainage (AMD) were analyzed for metal ion accumulation. The two species of algae collected were Klebsormidium and Entransia. Both algal species are located in an area of high metal ion concentrations and low pH (ranging from 2.28 to 2.89). The study assessed the concentration of iron, manganese, zinc, copper and...

2012
A. Mahmoodi M. Ghoranneviss M. Mojtahedzadeh S. H. Haji Hosseini M. Eshghabadi

The growth behavior of carbon nanotubes synthesized from C2H2 at the temperature range of 700 to 900°C and using thermal chemical vapor deposition (TCVD) method has been investigated. Thin films of nickel (Ni) catalyst, were coated on SiO2 substrates by ion beam sputtering technique. The formation of catalytic nickel nanoparticles was much increased when using NH3 as the environment gas which i...

2008
E. Matei M. Enculescu M. Sima R. Neumann I. Enculescu

In the last decade, the deposition of metallic nanowires with magnetic properties proved to be an attractive field due to the wide range of potential applications; one can prepare nanowires with exotic properties, like anisotropic or giant magnetoresistance [1-3], which are suitable as building blocks in the development of devices such as magnetic field sensors or nonvolatile RAM memories. In t...

2008
H. Kollmus M. Bender W. Assmann R. Dörner C. Halfpap B. Kindler A. Krämer H. Reich-Sprenger

For an optimal functionality and a high durability of the planned SIS18 beam loss collimators a low ion-induced desorption yield of the collimator material is required. Gold coated copper was found to be the material of choice: copper has a high thermal conductivity, a high specific heat and can be produced with high purity for reasonable prizes. The gold layer prevents the copper from oxidatio...

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