TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The electroactive particles have an average diameter of 10 nm to 20 mu m, and the concentration of the electroactive particles is 20-95 wt.%. The stress versus strain curve of the composite electrode is free of a peak or inflection point between a strain of 0-2% as measured according to ASTM D882-97 using sample type D638-03 IV, and/or the composite electrode has a tensile strain at failure of greater than 8%, when tested according to ASTM D882-97. The metal salt includes one or more alkali metal salt, and/or one or more alkaline earth metal salt. The composite electrode includes a lithium salt comprising lithium trifluoromethane sulfonate, lithium hexafluorophosphate, lithium hexafluoroarsenate, lithium imide, lithium tris(trifluoromethane sulfonate) carbide, lithium tetrafluoroborate, lithium borofluoride, lithium bromide, lithium thiocyanate, lithium perchlorate, lithium aluminum chloride, lithium trifluoromethanesulfonyl amide, LiC6H5SO3, LiCH3SO3, LiSbF6, LiNbF6, LiB(CF3)4, LiBF(CF3)3, LiBF2(CF3)2, LiBF3(CF3), LiB(C2F5)4, LiBF(C2F5)3, LiBF2(C2F5)2, LiBF3(C2F5), LiB(CF3SO2)4, LiBF(CF3SO2)3, LiBF2(CF3SO2)2, LiBF3(CF3SO2), LiB(C2F5SO2)4, LiBF(C2F5SO2)3, LiBF2(C2F5SO2)2, and/or LiBF3(C2F5SO2). The composite electrode further comprises a carbonate solvent. The alkylaluminum catalyst includes triisobutylaluminum (preferred), triethylaluminum, and/or tri-n-hexylaluminum. The triisobutylaluminum is present at 1-30 mmol per mole of EO.    TECHNOLOGY FOCUS - POLYMERS - Preferred Process: The EO-containing copolymer is prepared using an alkylaluminum catalyst. The process further comprises: activating the alkylaluminum catalyst by contacting it with a Lewis base initiator to form the activated alkylaluminum catalyst; and quenching the catalyst by adding a compound bearing an active proton. The temperature of the process is 10-45 degrees C. Preferred Components: The EO-containing copolymer is a random copolymer and the additional monomer includes propylene oxide. The EO-containing copolymer is a reaction product from a synthesis using a catalyst, which is essentially free of calcium. The EO-containing copolymer has a glass transition temperature of less than -30 degrees C, and/or a crystallinity of less than 40 wt.%. The EO-containing polymer has a mole fraction of ethylene oxide, X(EO) of greater than 0.88. The copolymer has a blockiness index of greater than 0.75. EXAMPLE - Nitrogen was purged in a pressure-rated reactor with a steel agitator at 75 degrees C for 4 hours. The reactor was cooled to 32 degrees C, and charged with dry isopentane (420 g), 3 g of Cabot SpectrAl 51 (RTM: Alumina) in hexane (60 g) and propylene oxide (1.7 g). Then, 6.6 ml of 1 mole/l solution of triisobutylaluminum in hexane was injected. Triethylamine (0.22 g) was added. Ethylene oxide and propylene oxide were then fed at a rate of 26.4 g/hour and 2.6 g/hour, respectively and worked up to give a random copolymer of ethylene oxide and propylene oxide (a1). Then, (a1) was mixed at a molar ratio of 12 to give a composition.