公开(公告)号：DE3378336D1

公开(公告)日：1988-12-01

申请号：DE3378336

申请日：1983-11-15

Applicant: IBM

Inventor： BINDRA PERMINDER SINGH ,  DAVID ALLAN PHILLIP ,  LIGHT DAVID NOEL

IPC: C25B11/04 ,  H01M4/88 ,  H01M4/90 ,  H01M4/92 ,  H01M8/08

Abstract: Fuel cell catalysts which are efficient, long-lived, and refurbishable in-situ include gold carrying a UPD (underpotential deposited) deposit of another element. UPD Ag, Pt, Pd, Ir, Rh, or Tl, Pb, Bi is formed on Au crystallites which are carried on and bonded to the surfaces of substrate carbon particles. The crystallites cause dissociative adsorption of the oxygen molecules so that four electrons are produced per molecule during the reduction reaction which is involved. In an alkaline electrolyte, the catalyst metals such as Pd, lr, Ag, Rh and Ptshow no tendency to poison the counter electrode (counter relative to the other electrode) since each of those metals is a good catalyst for both electrodes. Suitable fuels include methanol (CH 3 OH), formaldehyde (HCHO), and formic acid (HCOOH).

公开(公告)号：DE3472836D1

公开(公告)日：1988-08-25

申请号：DE3472836

申请日：1984-01-17

Applicant: IBM

Inventor： BINDRA PERMINDER SINGH ,  DAVID ALLAN PHILLIP ,  GALASCO RAYMOND THOMAS ,  LIGHT DAVID NOEL

IPC: G01N27/416 ,  G01N27/46

Abstract: The concentration of at least one organic additive in a plating bath is determined by providing a polished and preplated cathode, a reference electrode and anode in an electrolytic copper plating bath, passing an electric current from the anode to the cathode; measuring the voltage difference between the cathode and reference electrode; and comparing the difference to values for known concentrations of the at least one organic additive.