Application of High Modulus Silica Sol Electrolyte in Lead-acid Battery

Abstract

High modulus silica sol of n/m=52 sodium silicate aqueous sol was prepared by compressing and filtering sodium silicate aqueous solution without loss of SiO2 content. The SiO2 content can increase from 14.2% to 30%. The high modulus silica sol are mixed with acidic water to prepare a high modulus silica sol electrolyte, which is then produced into 6-DZM-20 Ah electric bicycle batteries. A combination of intermittent current-changing charging process, simple electrolyte production process, brings about reduced energy consumption and cost. The battery with the high modulus silica sol electrolyte shows enhanced stability, deep cycling performance, long service life, strong resistance to harsh environments, low self-discharge rate, low floating current, and excellent heat resistance.