fig1

Figure 1. Schematic illustration of IL-(S)TEM using a labeled TEM grid as the electrode. The TEM grid works as the working electrode during the electrochemical tests, which can be held by an Au wire, a reverse tweezer or a glassy carbon rotating disk electrode tip using a hollow cylindrical Teflon cap. The TEM images used for illustration are adopted from Ref.^[47]. TEM: Transmission electron microscopy; IL-(S)TEM: identical location (scanning) transmission electron microscopy.