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Appl Environ Microbiol. 1964 January; 12(1): 10-12
Copyright © 1964 by the American Society for Microbiology. All Rights Reserved.

Bioelectrochemical Energy Conversion

Department of Microbiology, College of Medicine, Wayne State University, Detroit, Michigan
Research and Development, Magna Corporation, Anaheim, California

ABSTRACT

The interaction between photosynthetic microorganisms and an inert electrode material was examined. Cathodic polarization values of platinum-bearing marine algae were obtained over a wide current-density range under both illumination and dark conditions. A potential shift of 0.6 v in the cathodic direction occurred upon illumination at a current density of 4.3 µa/cm². Similar photo-induced results, involving anodic polarization, were obtained by use of resting cells of Rhodospirillum rubrum supplemented with malate. Appropriate combinations of such bioelectrodes were used to assemble an electrochemical cell capable of light-dependent production of electrical energy.