Instrumentation for in situ flow electrochemical Scanning Transmission X-ray Microscopy (STXM) Academic Article uri icon

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abstract

  • We report the design and performance of a 3-electrode device for real time in situ scanning transmission X-ray microscopy studies of electrochemical processes under both static (sealed, non-flow) conditions and with a continuous flow of electrolytes. The device was made using a combination of silicon microfabrication and 3D printing technologies. The performance is illustrated by results of a study of copper deposition and stripping at a gold working electrode. X-ray absorption spectromicroscopy at the Cu 2p edge was used to follow the evolution as a function of potential and time of the spatial distributions of Cu(0) and Cu(i) species electro-deposited from an aqueous solution of copper sulphate. The results are interpreted in terms of competing mechanisms for the reduction of Cu(ii).

authors

  • Prabu, Vinod
  • Obst, Martin
  • Hosseinkhannazer, Hooman
  • Reynolds, Matthew
  • Rosendahl, Scott
  • Wang, Jian
  • Hitchcock, Adam Percival

publication date

  • June 2018