TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The halogen substituted silicon compound is of formula, (X)a(R)BSic. At least one component is contacted with a vapor of the halogen substituted silicon compound.X = Cl, Br, I, At, or their combination;R = represents substituents that adhere to the rules of valence for the atoms to which they are attached, and includes H, alkyls, alkenyls, alkynyls, hydroxyl, alkoxyl, silyloxy, amino, nitro, thiol, amines, amides, phosphoryls, phosphonates, phosphines, carbonyls, carboxyls, silyls, ethers, thioethers, sulfonyls, selenoethers, ketones, aldehydes, esters, aryl, cycloalkyl, cycloalkenyl, heterocycle, polycycle, or their combination.(a+b) is (2c+2), when a is at least 1. Preferred Composition: The halogen substituted silicone compound is present during the contacting step at a stoichiometric ratio of 0.8-200 total equivalents of the halogen substituted silicone compound per total equivalents of the initial amount of water. One equivalent weight of the halogen substituted silicone compound is defines as the amount capable of reacting with one molecular weight of water under the contacting conditions. EXAMPLE - 3 dry 30 ml bottles were charged with glass beads to approximately one third the total volume. 3 similar portions of extracted cathode material were placed on top of the glass beads, one each per bottle. The first bottle was sealed for use as a comparative example. The second bottle was charged with 0.5 ml hexamethyldisilizane, and the third bottle was charged with 0.5 ml dimethyldichlorosilane. All three bottles were aged at room temperature for 72 hours and the water content of the cathode material was determined. The results showed that both dimethyldichlorosilane and hexamethyldisilizane clearly removed water from the cathode material through vapor phase contact, i.e. comparative example had 1156 ppm water, bottle (with hexamethyldisilizane) had 526 ppm water, and bottle (with dimethyldichlorosilane) had 56 ppm water.