TITLE:
Potentiometric Measurement of State-of-Charge of Lead-Acid Batteries Using Polymeric Ferrocene and Quinones Derivatives
AUTHORS:
Touma B. Issa, Pritam Singh, Murray V. Baker, Todd Lee
KEYWORDS:
Surface Modified Electrodes, Ferrocene, Quinone, State-of-Charge, Lead-Acid Battery
JOURNAL NAME:
Journal of Analytical Sciences, Methods and Instrumentation,
Vol.4 No.4,
December
11,
2014
ABSTRACT: Measurement of state-of-charge of lead-acid batteries using
potentiometric sensors would be convenient; however, most of the
electrochemical couples are either soluble or are unstable in the battery
electrolyte. This paper describes the results of an investigation of poly
(divinylferrocene) (PDVF) and Poly(diethynylanthraquinone) (PAQ) couples in
sulfuric acid with the view to developing a potentiometric sensor for lead-acid
batteries. These compounds were both found to be quite stable and undergo reversible
reduction/oxidation in sulfuric acid media. Their redox potential difference
varied linearly with sulfuric acid concentration in the range of 1 M - 5 M (i.e. simulated lead-acid electrolyte
during battery charge/discharge cycles). A sensor based on these compounds has
been investigated.