Figure 12.

(a) Schematic illustration of the PFO-assisted one-pot surface engineering process for the preparation of OLO@m-SWCNT powders. (b) Conceptual illustration of the beneficial effect of the m-SWCNT nanonets on the bifunctional ORR/OER electrocatalytic activity (i.e., the ORR through the SWCNTs themselves and the OER accelerated by the m-SWCNT nanonets) of the NSC, and (c) ORR electrocatalytic activities of the pristine NSC, NSC@SWCNTs, and NSC@m-SWCNTs. Reproduced with permission [113]. Copyright, The Royal Society of Chemistry, London, UK, 2017.