Fig. 4: Microscopical characterization of the catalysts.
From: Host-guest-induced electronic state triggers two-electron oxygen reduction electrocatalysis
a–d Modeling simulation images of P-CN-TPB, P-CN-Ph, HG-CD-TPB, and HG-CD-Ph. e–h SEM images, and EDS maps of P-CN-TPB, P-CN-Ph, HG-CD-TPB, and HG-CD-Ph. i–l Low-magnification TEM image of P-CN-TPB, P-CN-Ph, HG-CD-TPB, and HG-CD-Ph.
