Insertion materials

Polymers are used as inserts for pins and contacts. Important properties of the commonly used insert materials have been compiled (31). Polysulfones are high temperature thermoplastics that have high rigidity, low creep, excellent thermal stabiHty, flame resistance, low loss tangents, and low dielectric constants. The principal weakness of polysulfones is their low chemical resistance. 

A nuclear chain reaction can be controlled by inserting materials within the fuel that deprive the fuel of... 

Feed nozzle type Insert material Nozzle tip... 

The reactions of these insertion materials, except for LiMnO, [19, 20], consist of electron and lithium-ion insertion into, or extraction from, each matrix without the destruction of its core structure this is called a topotactic reaction. A series of LiCovNi, v02 (0 < y < 1)) and... 

Table 1. Theoretical capacities, rechargeable capacities, average operating voltages, and energy densities of secondary lithium batteries with insertion materials...

Of these requirements (1) - (4) relating to the energy density and requirements (8) and (10) associated with safety are most important behavior criteria for insertion materials for lithium-ion batteries, even in basic research. 

An Innovative LiAlj/4NiiM02 Insertion Material for Lithium-Ion Batteries... 

Beginning in the early 1980s [20, 21] metallic lithium was replaced by lithium insertion materials having a lower standard redox potential than the positive insertion electrode this resulted in a "Li-ion" or "rocking-chair" cell with both negative and positive electrodes capable of reversible lithium insertion (see recommended papers and review papers [7, 10, 22-28]). Various insertion materials have been proposed for the anode of rechargeable lithium batteries,... 

The optoelectronic properties of the oxygen-inserted materials have also been measured.308 Compared to the parent ladder polysilanes, the absorption bands are blue shifted, as would be expected on insertion of a conjugation-inhibiting moiety. 

Given the importance of particle size to rate capabilities in Li+ batteries, preparation of nanostructures of Li+ insertion material for possible use as electrodes in Li+ batteries seemed like an obvious extension of our work on nanomaterials. The fact that these nanostructures can be prepared as high-density ensembles that protrude from a surface like the bristles of a brush (Fig, 2A) seemed particularly useful for this proposed application because the substrate surface could then act as a current collector for the nanostructured battery electrode material. 

Chu, Y.Q. and Q.Z. Qin. 2002. Fabrication and characterization of silver-V205 composite thin films as lithium-ion insertion materials. Chem. Mater. 14 3152-3157. 

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