Table 1. Tafel slopes corresponding to the Tafel plots in Fig. 3 .

MOF	pH	Tafel slope (V dec–1)
Ni3(HITP)2	8	0.124
Cu3(HHTP)2	8	0.170
Ni3(HHTP)2	8	0.120
Co3(HHTP)2	8	0.120
Ni3(HITP)2	13	0.128
Cu3(HHTP)2	13	0.110
Ni3(HHTP)2	13	0.110
Co3(HHTP)2	13	0.081