Therefore the novel gel electrolyte, a blend of colloidal and fumed silica, has great potential for application in the gelled electrolyte valve-regulated lead-acid batteries.
Sulfuric acid concentration changes the discharge and charge properties of lead-acid battery [ 16 ]. The open circuit potential of a lead-acid battery cell is a function of sulfuric acid concentration according to Nernst equation.
Addition of 6 % ( w / w) fumed silica to 30 % ( w / w) sulfuric acid, for preparation of gelled electrolyte, increased the battery performance significantly. According to the results of the transmission electron and optic microscope images of the gel electrolytes, the three-dimensional gel structure was prepared successfully.
According to the experimental results, the fumed silica-based gel electrolyte system has a great potential for application in the gelled electrolyte VRLA batteries. Chang Y, Mao X, Zhao Y, Feng S, Chen H, Finlow D (2009) J Power Sources 191:176–183
In this paper, fumed and colloidal silica were combined to prepare a novel mixed gel electrolyte for overcoming the disadvantages of gel electrolytes prepared with fumed or colloidal silica, thereby improving the physical and electrochemical properties and optimizing the overall performance of the gel electrolyte. 2. Experimental 2.1.
The gel electrolytes containing colloidal silica have advantages of simple preparation, storage and gel perfusion, and low cost.