Figure 7.

a) Schematic representation of the mechano‐thermal reactor for preparing 1T‐IrO₂, where the mechanical and thermal operations are controlled simultaneously. The blue and yellow balls indicate IrCl₃ and KOH, respectively. b) The free energy profile of OER over the 1T‐IrO₂. c) The free energy profile of OER over rutile‐IrO₂ (110) surface. a–c) Reproduced with permission.^{[ 110 ]} Copyright 2021, Springer Nature. d) High‐magnification STEM‐ADF image further shows the Ir vacancy defect. Reproduced with permission.^{[ 63 ]} Copyright 2021, Elsevier. e) UV/Vis absorption spectra of the electrolyte after 1 h of electrolysis at the indicated potentials. f) Potential dependence of Mn³⁺ accumulation (blue squares), the oxygen evolution current (black line), and MnO₄ ⁻@ generation (red circles). e,f) Reproduced with permission.^{[ 20b ]} Copyright 2019, Wiley‐VCH.