Contact to Mercury using Polypyrrole Coatings
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
The remarkable stability of the organic metal, polypyrrole, can be brought to bear on the problem of corroding contacts to mercury pools. Electrical contacts to pools of mercury are made by immersing wire electrodes (e.g., platinum or steel) into the pool. After a period of time, the contact degrades, evidenced by increasing noisiness of the contact. An overcoating of the conducting polymer, polypyrrole, over the wire maintains good electrical contact and at the same time prevents the mercury from coming into contact with the uncoated wire surface. It has been observed that no visible or electrical changes were seen after immersion in a mercury pool for two weeks.