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The viscosity of sulphuric-acid solutions used for battery electrolytes

1933; Volume: 10; Issue: 6 Linguagem: Inglês

10.6028/jres.010.057

2376-9815

G. W. Vinal, D. Norman Craig,

Thermodynamic properties of mixtures

The viscosity of sulphuric-acid solutions used for the elecrolyte in lead-acid storage batteries is a factor affecting the diffusion of the electrolyte through the porous material of the plates and separators.The decreased capacity of batteries at low temperatures is attributable in part to increase in viscosity of the electro- lyte.Storage batteries are commonly used under widely different conditions of temperature, but data for the viscosity of the electrolyte at temperatuers below C. have not been previously available.The viscosity of sulphuric-acid solu- tions containing 10 to 50 per cent acid has now been measured over a temperature range from +30°C. to -50°C , the measurements for some solutions being limited, however, by their freezing points.Below 0°C .the viscosity of the solutions increases rapidly as the temperature is diminished.