[24]Crown-8-modified carbon nanotubes for templating metal deposition and active materials for pseudocapacitors

A uniform nickel film could be coated on crown ether-modified carbon nanotubes (c-CNTs) by electroless deposition. The products CNT@Ni and c-CNT@Ni were oxidized and compressed into CNT@Ni@(NiOH)(2) and c-CNT@Ni@(NiOH)(2) discs, respectively. The areal and volumetric capacitances of CNT@Ni@(NiOH)(2) and c-CNT@Ni@(NiOH)(2) were compared and c-CNT@Ni@(NiOH)(2) showed a lower resistance.

Automated summary

A uniform nickel film was coated on crown ether-modified carbon nanotubes (c-CNTs) by electroless deposition, forming CNT@Ni@(NiOH)(2) and c-CNT@Ni@(NiOH)(2) discs after oxidation and compression. The capacitances of the films were compared, with c-CNT@Ni@(NiOH)(2) demonstrating lower resistance.