Table 1 Comparison of the rate of H2 production possible with silicotungstic acid–mediated electrolysis and a selection of leading PEMEs from the current literature.

Literature values are based on the highest rate of H2 production reported in those works. A table with more examples and a full description of how these metrics were calculated can be found in the supplementary materials.

H2 evolution catalystAmount of
powder/size
of electrode
Total catalyst
used (mg)
H2 production
rate (mmol
hour–1 mg–1)
Reference
Pt/C (0.5 mg of Pt cm–2)9 × 100 cm245022 (33)
Pt/C (0.4 mg of Pt cm–2)5 cm2247(26)
Pt/C (0.7 mg of Pt cm–2)7 cm24.953(31)
Pt/C (0.3 mg of Pt cm–2)20 cm2693(32)
Pd/C 10%50 mg5143This work
Rh/C 5%50 mg2.5241This work
Pt/C 5%50 mg2.5368This work
Pt/C 3%50 mg1.5423This work
Pt/C 1%50 mg0.51275This work
Pt/C 1%25 mg0.251336This work
Pt/C 1%10 mg0.12861This work