Skip to main content
placeholder image

Hard-templated preparation of mesoporous cobalt phosphide as an oxygen evolution electrocatalyst

Journal Article


Abstract


  • Herein, we examine the application of mesoporous cobalt phosphide (meso-CoP) prepared by a hard-templating method as a novel non-precious electrocatalyst for the oxygen evolution reaction (OER). The obtained meso-CoP exhibits a relatively low overpotential (0.30 V at 10 mA cm���2), a decent Tafel slope (81 mV dec���1), and good long-term stability, performing better than its bulk counterpart and many state-of-the-art Co-based OER electrocatalysts. The high electrocatalytic performance of the meso-CoP toward OER is attributed to two key factors: (1) a large accessible active surface which endows the meso-CoP with numerous active sites for water oxidation; (2) a well-organized mesoporous structure which expedites the electron/ion transfer and mass transport, thereby significantly enhancing the OER kinetics. This work will provide guidance for designing inexpensive high-performance electrocatalysts with exquisite mesostructures for potential applications in commercial water-splitting technology.

Publication Date


  • 2019

Citation


  • Mei, P., Yamauchi, Y., Pramanik, M., Fatehmulla, A., Adhafiri, A. M., Farooq, W. A., . . . Kim, Y. (2019). Hard-templated preparation of mesoporous cobalt phosphide as an oxygen evolution electrocatalyst. Electrochemistry Communications, 104. doi:10.1016/j.elecom.2019.06.002

Scopus Eid


  • 2-s2.0-85067968156

Volume


  • 104

Issue


Place Of Publication


Abstract


  • Herein, we examine the application of mesoporous cobalt phosphide (meso-CoP) prepared by a hard-templating method as a novel non-precious electrocatalyst for the oxygen evolution reaction (OER). The obtained meso-CoP exhibits a relatively low overpotential (0.30 V at 10 mA cm���2), a decent Tafel slope (81 mV dec���1), and good long-term stability, performing better than its bulk counterpart and many state-of-the-art Co-based OER electrocatalysts. The high electrocatalytic performance of the meso-CoP toward OER is attributed to two key factors: (1) a large accessible active surface which endows the meso-CoP with numerous active sites for water oxidation; (2) a well-organized mesoporous structure which expedites the electron/ion transfer and mass transport, thereby significantly enhancing the OER kinetics. This work will provide guidance for designing inexpensive high-performance electrocatalysts with exquisite mesostructures for potential applications in commercial water-splitting technology.

Publication Date


  • 2019

Citation


  • Mei, P., Yamauchi, Y., Pramanik, M., Fatehmulla, A., Adhafiri, A. M., Farooq, W. A., . . . Kim, Y. (2019). Hard-templated preparation of mesoporous cobalt phosphide as an oxygen evolution electrocatalyst. Electrochemistry Communications, 104. doi:10.1016/j.elecom.2019.06.002

Scopus Eid


  • 2-s2.0-85067968156

Volume


  • 104

Issue


Place Of Publication