ANALYSIS OF POSITIVE-PLATE RESISTANCE DURING CYCLING AND THE EFFECT OF COMPRESSION

An electrochemical cell is designed and constructed to enable in situ measurements of the resistance of both the active mass and the interph ase between the current-collector and the active mass in lead/acid tes t electrodes during cycling at well-defined degrees of compression ran ging from zero to 90 kPa. Preliminary results of measurements on posit ive electrodes are well reproducible and show that, after conditioning cycles, both the interphase resistance and the active-mass resistance are independent of compression. Time changes of the two resistances a re also studied and discussed. (C) 1997 Published by Elsevier Science S.A.