Influence of substituted benzaldehydes and their derivatives as inhibitors for hydrogen evolution in lead/acid batteries

The influence of substituted benzaldehydes and their derivatives as inhibitors for hydrogen evolution on smooth and porous negative electrodes of the lead/acid system is investigated by cyclic voltammetric measurements. The experiments have been carried out with and without the presence of antimony. The effect of the inhibitors can be distinguished by a moderate and a strong inhibiting action. Use of these inhibitors in flooded lead/acid batteries can reduce water loss during cycling by 50%.