Tuning the spin state of FePc <i>via</i> selectively defected carbon for enhanced oxygen reduction reaction
Tuning the spin state of the FeN<sub>4</sub> site to optimize its adsorption strength for the ORR intermediates remains a challenge. Herein, we demonstrate that a defect-engineered carbon material <i>via</i> CO<sub>2</sub> selective etching can effectively raise the spin state of Fe center of FePc/NC-CO<sub>2</sub>-900 compared to that of FePc. It shows a higher half-wave potential of 0.90 V and kinetic current density of 110.6 mA cm<sup>-2</sup> at 0.8 V than those of Pt/C and FePc. Theoretical calculations reveal that FePc with increased spin state in FePc/NC-CO<sub>2</sub>-900 facilitates the activation of oxygen molecules compared to the FePc catalyst.
Authors
- Wenhao He (ORCID: https://orcid.org/0000-0003-3281-3295)
- Jun Yang (ORCID: https://orcid.org/0000-0002-6365-3522)
- Yanqiu Wang (ORCID: https://orcid.org/0000-0002-2098-5009)
- Zhongliang Tian (ORCID: https://orcid.org/0000-0002-8666-825X)
- Jianye Liu (ORCID: https://orcid.org/0000-0002-7953-3672)
- Jie Li (ORCID: https://orcid.org/0000-0003-2227-6190)
Institutions
- Central South University (CN)
- Hunan Normal University (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc01212k
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China