NOVELTY - An electrolyte composition comprises: functionalized metal oxide particles; at least one solvent; and at least one ion pair or at least one scavenger; where the functionalized metal oxide particles and at least one ion pair are distributed throughout at least one solvent; and where the metal oxide particles trap impurities in the electrolyte.    USE - In article of manufacture comprising battery (comprising rechargeable battery), capacitor (claimed) and electrochemical cells.    ADVANTAGE - The metal oxide particles trap impurities (comprising water, hydrogen fluoride (HF) and other impurities) in the electrolyte. The composition in form of dispersion is stable for a period of 3-5 years. The metal oxide particles in the electrolyte lower irreversible capacity of the battery, where the irreversible capacity is lowered by at least 90%. The metal oxide particles in the electrolyte improve discharge capacity of the battery when cycling the battery at 60 degrees C, where the discharge capacity is increased by at least 10% after 4 cycles, or increased by at least 20% after 8 cycles. The scavenger in the electrolyte increases conductivity stability of the battery when cycling the battery at 60 degrees C as compared to the electrolyte composition without the scavenger, where the conductivity of the battery is increased by at least 10% after 4 hours or increased by at least 20% after 8 hours. The electrolyte compositions provide (i) exceptional ion conductivity, and reduced irreversibility between charge/discharge cycles and capacity fade versus cycles, (ii) stable dispersion and even distribution of components within the electrolyte composition, and (iii) ease of manufacturing via a simple dispersing step.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) an article of manufacture comprising: a housing; and the electrolyte composition positioned within the housing;    (2) making the electrolyte composition involving: dispersing the functionalized metal oxide particles and the at least one ion throughout the at least one solvent, where the method of making the electrolyte composition does not require any further step or steps after the dispersing step to form the electrolyte composition;    (3) making electrolyte composition involving: forming a dispersion having functionalized metal oxide particles in at least one first solvent, adding at least one second solvent to the dispersion, and removing the first solvent from the dispersion; and    (4) a battery having electrolyte composition comprising: functionalized metal oxide particles; and at least one solvent; where the metal oxide particles in the electrolyte lower irreversible capacity of the battery.