Principle: Nano-silica gel electrolyte for lead-acid batteries and its preparation method relate to the production technology of colloidal electrolyte for lead-acid batteries special for electric bicycles. Nano-silica gel electrolyte was prepared from lead-acid analytical pure sulfuric acid, fumed silica nano-powder, sodium sulfate and deionized water. After mixing, polyacrylamide and sodium polyacrylate are added as gel regulators, and a small amount of lanthanum sulfate, cerium sulfate, tungsten oxide and molybdenum oxide are added. Avoid the adverse effects caused by the use of sodium silicate colloid. Using fumed silica nano-powder as gel and adding some trace chemical components, a new colloidal electrolyte was formed, which improved the gel-forming characteristics, increased the capacity of the battery and prolonged the service life of deep discharge cycle. As an electrolyte replacing the original sulfuric acid aqueous solution electrolyte, the rheological property of colloidal electrolyte is improved, and the electrolysis process of water can be effectively controlled at the end of battery cycle charging.
Lithium battery is a battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. The first lithium battery came from the great inventor Edison. Because the chemical characteristics of lithium metal are very active, the processing, storage and use of lithium metal have very high requirements for the environment. So lithium batteries have been useless for a long time.
Principle: At present, lithium-ion batteries are divided into liquid lithium-ion batteries (LIB) and polymer lithium-ion batteries (PLB). Among them, the liquid lithium ion battery refers to the secondary battery in which the Li+ intercalation compound is positive and negative. The anode adopts lithium compound LiCoO2 or LiMn2O4, and the cathode adopts lithium-carbon sandwich compound. Lithium-ion battery has the advantages of high working voltage, small volume, light weight, high energy, no memory effect, no pollution, small self-discharge and long cycle life, and is an ideal energy source for the development of 2 1 century.