Construction of Ti3C2 supported hybrid Co3O4/NCNTs composite as an efficient oxygen reduction electrocatalyst

Jing Liu, Liwei Mi, Yanan Xing, Tianfu Wang and Fu Wang

Renewable Energy, 2020, vol. 160, issue C, 1168-1173

Abstract: Developing high performance non-Pt oxygen reduction reaction (ORR) electrocatalysts is vital for the practical applications of fuel cell but it still remains a grand challenge. Herein, an in-situ pyrolysis strategy was explored to prepare hybrid Co3O4/N-doped carbon nanotubes catalyst supported on the surface of Ti3C2 (Co3O4/NCNTs/Ti3C2). Owing to the synergistic effects of constituent components, as-prepared Co3O4/NCNTs/Ti3C2 exhibited superior ORR activity (diffusion limited current 5.41 mA cm−2 and half-wave potential 0.79 V) to the commercial Pt/C (diffusion limited current 5.14 mA cm−2 and half-wave potential 0.78 V). Meanwhile, the Co3O4/NCNTs/Ti3C2 catalyst demonstrated moderately good stability. Compared with the loss of current (∼54%) of commercial Pt/C, 48% current decrease was observed for Co3O4/NCNTs/Ti3C2 after the chronoamperometric measurement for 6 × 103 s. In view of the enhanced activity and stability, Co3O4/NCNTs/Ti3C2 holds high potential as a practical ORR electrocatalyst.

Keywords: Ti3C2; Co3O4; N-doped carbon nanotubes; ORR (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:160:y:2020:i:c:p:1168-1173

DOI: 10.1016/j.renene.2020.07.059

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