no 5 alkaline battery.Properties of lithium silicate batteries

　　Lithium silicate aqueous solution is a colorless transparent or slightly milky white liquid, odorless, non-toxic, non flammable, and alkaline (pH=11-12). Like Sodium metasilicate, lithium silicate aqueous solution is easy to gel after adding acidic substances. However, since the Ionic radius of lithium is much smaller than the Ionic radius of sodium and potassium, the lithium silicate aqueous solution also has some unique properties: the performance of lithium silicate aqueous solution is closely related to the size of silica gel particles, for example, the SiO2 particle is 1 m μ Left or right, the product is clear and transparent, with low viscosity, and excellent storage and usage performance (water resistance, fire resistance, weather resistance, etc.); And when SiO2 particles are about 3 m μ When the solution is in a micro colloidal form, it has high viscosity, poor storage stability, and poor usability. Lithium silicate aqueous solution allows for a modulus of up to 8, a SiO2 content of 20%, and still has low viscosity and good stability. Lithium silicate aqueous solution has self drying properties and can generate a dry film that is insoluble in water, with excellent resistance to dry wet alternation. Lithium silicate aqueous solution precipitates when heated, but if the precipitate does not overheat or dehydrate, it can still dissolve again after cooling. Lithium silicate aqueous solution has the characteristic of reacting with the surfaces of glass, steel, aluminum, and fibers with hydrophilic surfaces to form a film. It can be carried out above 60 ℃, and the higher the temperature, the faster the reaction. Due to different preparation methods, SiO2 in lithium silicate aqueous solutions can be in a crystalline or colloidal state, while usually stable colloidal SiO2 solutions have little or no crystalline SiO2; When used as a coating, the performance of the coating film made of SiO2 crystalline silicate is significantly better than that of the coating film made of colloidal silicate. It is worth noting that the dry film formed by lithium silicate aqueous solution on smooth surfaces (metal, glass, etc.) is discontinuous, with poor adhesion, peeling, and powder shedding. However, the mixed use of lithium silicate and Sodium metasilicate or potassium silicate can not only reduce the cost, but also improve the film forming reaction of lithium silicate.

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