So sánh khả năng phóng điện của cặp điện cực Pb-PbO2 trong dung dịch axit metasunfonic và axit floroxilixic

Abstract

The HBF₄ and H₂SiF₆ acids are often used as electrolyte for lead reserves batteries, but these are relatively durable acids and harmful to the environment. Meanwhile CH₃SO₃H acid is biodegradable to form sulfate ions (SO₄^2-) and carbon dioxide (CO₂) in the natural environment, thus it’s more environmentally friendly. This paper presents the results of using CH₃SO₃H acid as electrolyte for lead batteries in different temperatures, acid concentrations and rate of number of acid moles/number of PbO₂ moles, in comparison to H₂SiF₆ acid. In the some determined conditions, CH₃SO₃H acid can be use as an electrolyte for lead reserves batteries.The 30 % CH₃SO₃H solution, rates of number of acid moles/number of PbO₂ moles is 5.0 ​​and the working temperature > 20 °C are suitable conditions for using as liquid electrolyte of the reserve battery. While discharging at 30 °C, we received the E_bat. = 1897 mV, the maximum discharge voltage = 1694 mV and discharge time = 251s (with discharge voltages ≥ 1650 mV).