CRYSTALLOGRAPHIC CHANGES DURING OXIDATION (CHARGING) OF THE SILVER ELECTRODE. PART I. INITIAL OXIDATION OF AN INDUSTRIAL SINTERED PLAQUE.
NAVAL RESEARCH LAB WASHINGTON D C
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The Ag electrode was studied during oxidation using the optical microscope. As a preliminary to other, more detailed experiments, the oxidation during the first charge of an unused sintered Ag plaque was observed as Ag was converted first to Ag2O and then to AgO. The initial oxidation occurred on the smaller particles of Ag, and these were usually completely oxidized by the end of charge, whereas the larger Ag particles were left largely unconverted. The rate of reaction was quite unequal in different areas of the electrode. AgO crystals were larger than Ag2O crystals and may have blocked the surface in some areas. Both particle size of Ag and the formation of dense layers of AgO may have limited complete oxidation and may partially have been responsible for the inability of the electrode to produce the full capacity that was theoretically possible. Author
- Physical Chemistry
- Electrochemical Energy Storage