The acidity of Lead One of the most cost-effective ways to store energy is through batteries. The construction of this battery involves two electrodes, one of which is made of lead and the other of which is made of lead oxide. These electrodes are submerged in a solution of sulfuric acid and water. The lead combines with the sulfuric acid in the battery to make lead sulfate when it generates energy. When lead oxide reacts with hydrogen and sulphuric acid, it produces lead sulfate and water.