Abstract :
The mechanism of expander action is reviewed, with special emphasis on the role of its organic consituent and the method by which this constituent is derived from lignin. An alternative material, SYNTAN BNF, is proposed for application as the organic consituent. BNF also increases the overvoltage for gas evolution, which could be of specaal interestfor valve-regulated lead/acid batteries. BNF is compatible with α-oxi-naphtholic acid (AONA), an inhibitor of lead oxidation.
Keywords :
SYNTAN BNF , Lead/acid batteries , Negative plates , Expanders
