Electrochemical Engineering of Battery Systems.
Abstract
Changes in diffusely reflected light scattered from a battery electrode (Cd negative) have been shown to be well correlated with the electrochemical behavior. Change in the diffusely reflected light from the current collector side of a cadmium negative (anode for discharge) precedes the onset of rapid passivation type of polarization determined at the front (solution) side of the porous electrode. The chemical change of Cd to Cd(OH)2 during discharge is considered to cause the variation of optical parameters for light scattering and absorption and thus the change in diffuse reflectance. The monitoring by optical changes corresponding to the material changes of the current collector region of the anode permits determination of the essential features of the profile without disturbing the battery operation. Thus, cycling effects on the current redistribution can be analyzed and effective battery performance evaluated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1973
- Accession Number
- AD0914248
Entities
People
- Leonard Nanis
Organizations
- University of Pennsylvania