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Storage Applications (storage + application)

Distribution by Scientific Domains

Polymers and Materials Science	50%
Chemistry	50%

Selected Abstracts

Nanostructured Carbon and Carbon Nanocomposites for Electrochemical Energy Storage Applications

CHEMSUSCHEM CHEMISTRY AND SUSTAINABILITY, ENERGY & MATERIALS, Issue 2 2010
Sheng Su
Abstract Electrochemical energy storage is one of the important technologies for a sustainable future of our society, in times of energy crisis. Lithium-ion batteries and supercapacitors with their high energy or power densities, portability, and promising cycling life are the cores of future technologies. This Review describes some materials science aspects on nanocarbon-based materials for these applications. Nanostructuring (decreasing dimensions) and nanoarchitecturing (combining or assembling several nanometer-scale building blocks) are landmarks in the development of high-performance electrodes for with long cycle lifes and high safety. Numerous works reviewed herein have shown higher performances for such electrodes, but mostly give diverse values that show no converging tendency towards future development. The lack of knowledge about interface processes and defect dynamics of electrodes, as well as the missing cooperation between material scientists, electrochemists, and battery engineers, are reasons for the currently widespread trial-and-error strategy of experiments. A concerted action between all of these disciplines is a prerequisite for the future development of electrochemical energy storage devices. [source]

Microencapsulation of n -Eicosane as Energy Storage Material

CHINESE JOURNAL OF CHEMISTRY, Issue 5 2004
Xiao-Zheng Lan
Abstract For heat energy storage application, polyurea microcapsules containing phase change material, n -eicosane, were synthesized by using interfacial polymerization method with toluene-2,4-diisocyanate (TDI) and diethylenetriamine (DETA) as monomers in an emulsion system. Poly(ethylene glycol)octyl-phenyl ether (OP), a nonionic surfactant, was the emulsifier for the system. The experimental result indicates that TDI was reacted with DETA in a mass ratio of 3 to 1. FT-IR spectra confirm the formation of wall material, polyurea, from the two monomers, TDI and DETA. Encapsulation efficiency of n -eicosane is about 75%. Microcapsule of n -eicosane melts at a temperature close to that of n -eicosane, while its stored heat energy varies with core material n -eicosane when wall material fixed. Thermo-gravimetric analysis shows that core material n -eicosane, micro- n -eicosane and wall material polyurea can withstand temperatures up to 130, 170 and 250 °C, respectively. [source]

Tailoring Hydrogen Storage Materials Towards Application

ADVANCED ENGINEERING MATERIALS, Issue 5 2006
M. Dornheim
Abstract A breakthrough in hydrogen storage technology was achieved by preparing nanocrystalline hydrides using high-energy ball milling and the use of suitable catalysts/additives. These new materials show fast or in case of Mg-based hydrides very fast absorption and desorption kinetics within minutes, thus qualifying lightweight Mg- or Al-based hydrides for storage applications. This article summarizes our current understanding of the kinetics of Mg-based light metal hydrides, describes an approach for a cost-effective processing technology and highlights some promising new developments in lightweight metal hydride research. [source]

Superior-Performance Polymeric Composite Materials for High-Density Optical Data Storage,

ADVANCED MATERIALS, Issue 5 2009
Riccardo Castagna
High-resolution holographic gratings are obtained using a combination of a multifunctional acrylate (DPHP/HA), a low-molecular-weight glass-forming liquid epoxy-aromatic resin (TPMTGE), and a UV-photoinitiator (Irgacure 819). Their optical properties (sensitivity, transparency, and optical shrinkage) are promising for high-density optical data storage applications. [source]

PHYSICAL PROPERTIES OF TWO POPULAR INDIAN POTATO VARIETIES

JOURNAL OF FOOD PROCESS ENGINEERING, Issue 4 2006
D.K. SINGH
ABSTRACT Physical properties of potatoes, often required for analyzing heat and mass transfer during cooling and storage applications, were determined for the Kufri Jyoti and Kufri Sinduri varieties. The average values of linear dimensions, Dp, Sp, Ra, mass, ,, Acand A of these two varieties were measured. The Kufri Jyoti was found to have comparatively more variations in a, b and c than the Kufri Sinduri. The average values of Dp, Sp, Ra, ,, Acand A for the Kufri Jyoti and Kufri Sinduri were found to be 4.647 and 3.692 cm; 82.45 and 86.65%; 82.99 and 91.78%; 1113.3 and 1092.1 kg/m3; 30.86 and 12.10 cm2; and 79.05 and 47.10 cm2, respectively. The average values of ,, Dv, average Dpi, ,and bulk density for the Kufri Jyoti and Kufri Sinduri in a commercially used 50-kg gunny bag were found to be 0.42 ± 0.01 and 0.43 ± 0.008; 4.998 and 4.056 cm, 4.817 ± 0.534 and 3.922 ± 0.211 cm, 0.58 and 0.57; and 647.6 and 622.5 kg/m3, respectively. Relationships were also established for calculating the A of potato as a function of volume and weight. [source]

Polymerization in Nanocrystalline Diamond Films by Oxygen Incorporation

PLASMA PROCESSES AND POLYMERS, Issue 9 2006
Kungen Teii
Abstract Summary: Structure and resistivity of nanocrystalline diamond films deposited using microwave Ar-rich/O2/CH4 plasmas have been examined as a function of the O2/CH4 ratio from 0 to 0.53. Addition of O2 to Ar-rich/CH4 plasmas likely reduced the density of C2 radicals due to loss reactions of O atoms with CH4 and CHx radicals. The Raman peak of diamond at 1,332 cm,1 was overlapped by the D peak of sp2 -bonded, disordered carbon and its intensity was a little enhanced by the O2 addition, while the average size of sp2 -bonded carbon clusters in nondiamond phases was increased. Oxygen was incorporated into the films in forms of CO bonds, which bridged the carbon clusters themselves, and formed polymer-like, large-unit structures. The resistivity of the films was drastically increased from the order of 10,4 up to 104 ,,·,m with a small O2 addition (1.2 vol.-% in total pressure), providing novel sensor and storage applications based on oxygen incorporation and desorption. Decomposition of a Raman spectrum showing the diamond, D and G modes of amorphous carbon, and trans -polyacetylene peaks. The insert represents a typical SEM image showing a film surface. [source]