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. 2019 Sep 1;6(21):1901129. doi: 10.1002/advs.201901129

Figure 9.

Figure 9

a) Framework of NNU‐21‐24 connected by trinuclear metal clusters and tridentate carboxylate ligand. b) OER polarization curves recorded in 0.1 m KOH. c) Projected density of states for NNU‐21‐24. a–c) Reproduced with permission.[qv: 81g] Copyright 2018, Wiley‐VCH. d) Illustration of the design strategy for heterogeneity A2.7B–MOF–FeCo1.6 catalyst preparation. e) SEM and f) TEM images of A2.7B–MOF–FeCo1.6. g) OER polarization curves obtained at a scan rate of 5 mV s−1. Corresponding h) Tafel plots and i) capacitive currents as a function of the scan rate for various catalysts measured in 1 m KOH. d–i) Reproduced with permission.[qv: 81a] Copyright 2018, Wiley‐VCH.