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1.642 Aktuelle Fachpublikationen zum Thema temperature

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A new room temperature and solvent free carbon coating procedure for battery electrode materials

17.09.2013 | Alexandre Ponrouch; Alejandro R Goni; Moulay Tahar Sougrati; Mohamed Ati; Jean-Marie Tarascon; Jessica Nava-Avendaño ..., Energy & Environmental Science, 2013

Carbon coating on battery electrode active material powders is a common practice in order to improve their electronic conductivity and the battery calendar life by limiting side reactions (i.e. active material surface degradation and electrolyte decomposition). Such coating is currently achieved ...


High Performance Sensors Based on Molybdenum Disulfide Thin Films

12.09.2013 | Kangho Lee, Riley Gatensby, Niall McEvoy, Toby Hallam, Georg S. Duesberg, Advanced Materials, 2013

High performance sensors based on molybdenum disulfide (MoS2) grown by sulfurization of sputtered molybdenum layers are presented. Using a simple integration scheme, it is found that the electrical conductivity of MoS2 films is highly sensitive to NH3 adsorption, consistent with n‐type ...


GaAs Nanowires: From Manipulation of Defect Formation to Controllable Electronic Transport Properties

09.09.2013 | Ning Han; Jared J. Hou; Fengyun Wang; SenPo Yip; Yu-Ting Yen; Zai-xing Yang; Guofa Dong; TakFu Hung; Yu-Lun Chueh; J ..., ACS Nano, 2013

Reliable control in the crystal quality of synthesized III–V nanowires (NWs) is particularly important to manipulate their corresponding electronic transport properties for technological applications. In this report, a “two-step” growth process is adopted to achieve single-crystalline GaAs NWs, ...


Mechanical, electrical, and dielectric properties of polyvinylidene fluoride/short carbon fiber composites with low‐electrical percolation threshold

05.09.2013 | Ranvijai Ram, Mostafizur Rahaman, Dipak Khastgir, Journal of Applied Polymer Science, 2013

Abstract In this investigation, polyvinylidene fluoride (PVDF)/short carbon fiber (SCF) composites have been prepared by solution casting technique to enhance electrical and dielectric properties with very low‐electrical percolation threshold (0.5 phr SCF). The effect of SCF content on ...


Synthesis and characterization of conductive composite films of polyisoprene/PA12@ PANI

04.09.2013 | Douniazed Mezdour, Jean‐François Pilard, Mohamed Tabellout, Shoko Odake, Salah Sahli, Journal of Applied Polymer Science, 2013

ABSTRACT Polyamide@Polyaniline powders of core‐shell structure are known to have reduced conduction thresholds useful to maintain the mechanical and optical properties of the matrix. However, difficulties emerge at the synthesis stage, where dissolving the matrix without damaging the ...


Joule heating effects on particle immobilization in insulator‐based dielectrophoretic devices

03.09.2013 | Roberto C. Gallo‐Villanueva, Michael B. Sano, Blanca H. Lapizco‐Encinas, Rafael V. Davalos, ELECTROPHORESIS, 2013

In this work, the temperature effects due to Joule heating obtained by application of a DC electric potential were investigated for a microchannel with cylindrical insulating posts employed for insulator based dielectrophoresis (iDEP). The conductivity of the suspending medium, the local ...


Effect of Mo6S3I6 nanowires on the dielectric properties of poly(ϵ‐caprolactone)

03.09.2013 | Šarūnas Svirskas, Džiugas Jablonskas, Vytautas Samulionis, Austė Kuprevičiūtė, Jūras Banys, Seow Jecg Chin, Tony McNally, physica status solidi (a), 2013

The broadband dielectric properties of composites of poly(ϵ‐caprolactone) (PCL) and Mo6S3I6 (MoSI) nanowires at loadings up to 5 wt% were investigated. Three different relaxations were observed for these composites, two relaxations are associated with the polymer matrix and the lower ...


Synthesis and Characterization of Nonsubstituted and Substituted Proton-Conducting La6–xWO12–y

03.09.2013 | Janka Seeger; Mariya E. Ivanova; Wilhelm A. Meulenberg; Doris Sebold; Detlev Stöver; Tobias Scherb; Gerhard Schumach ..., Inorganic Chemistry, 2013

Mixed proton–electron conductors (MPEC) can be used as gas separation membranes to extract hydrogen from a gas stream, for example, in a power plant. From the different MPEC, the ceramic material lanthanum tungstate presents an important mixed protonic–electronic conductivity. Lanthanum tungstate ...


Defects and Transport Properties in TiNb2O7

02.09.2013 | Wen Xing, Liv‐Elisif Kalland, Zuoan Li, Reidar Haugsrud, Journal of the American Ceramic Society, 2013

The electrical conductivity of TiNb2O7 was characterized as a function of temperature, and . The total conductivity was independent of in the low oxygen partial pressure regime, while a dependency of was observed at higher oxygen partial pressures. The conductivity increased with increasing ...


Effects of doping concentration on the microstructural and optoelectrical properties of boron doped amorphous and nanocrystalline silicon films

02.09.2013 | Author(s): Chao Song , Xiang Wang , Rui Huang , Jie Song , Yanqing Guo, Materials Chemistry and Physics, 2013

Publication date: 15 October 2013 Source:Materials Chemistry and Physics, Volume 142, Issue 1 Author(s): Chao Song , Xiang Wang , Rui Huang , Jie Song , Yanqing Guo Boron doped hydrogenated amorphous silicon thin films were prepared by plasma-enhanced chemical vapor deposition ...


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