fig3
Figure 3. (A) The LSV curves of COPMCT-Co-X (X represent pyrolysis temperature) catalysts at different temperatures; (B) E1/2 of COPMCT-Co-X catalysts at different temperatures; (C) Tafel plots of COPMCT-Co-X; (D) The CV curves of COPMCT-Co-900; (E) The LSV curves of COPMCT-Co-900, COPMCT-Ni-900, COPMCT- 900 and COPMCT-Fe-900; (F) Tafel plots of COPMCT-Co-900, COPMCT-Ni-900, COPMCT- 900 and COPMCT-Fe-900. LSV: Linear sweep voltammetry; COP: covalent organic polymer; CV: cyclic voltammetry.
