We extended the concept of CNT-induced molecular distortion to enhance catalytic performance of other molecular systems. We investigated the oxygen reduction reaction (ORR) activity of FePc/SWCNT in O2-saturated 0.1 M KOH via measurements on a rotating disk electrode (RDE). Linear sweep voltammetry (LSV, Fig. ) indicates that FePc/SWCNT achieves higher activity than FePc/MWCNT, with a more positive onset (Eonset) and half-wave potential (E1/2) than all other samples. The E1/2 of FePc/SWCNT is 0.93 V, which is 40 mV more positive than FePc/15, FePc/50, and Pt/C. We calculated the average electron transfer number (n) from the LSV curves with different rotation rates using Koutecky-Levich (K-L) plots (Supplementary Fig. ) . We find n = 3.98 for FePc/SWCNT, close to the theoretical limit of 4.00 for a four-electron reduction process.