Affiliation:
1. School of Materials Science and Chemical Engineering Ningbo University Ningbo Zhejiang 315211 P. R. China
Abstract
AbstractExploring non‐precious metal‐based electrocatalysts is still challenging in 21stcentury. In this work, a series of hexagonal bipyramidal Ce‐based PBA materials as precursors with different Fe/Co metal ratios, namely as CeFexCo1−x‐PBA, are successfully constructed via co‐precipitation method and converted into corresponding metal oxides (denoted as FexCo1−xCeOy) via thermal treatment. Then, they as electrocatalysts realize highly efficient oxygen evolution reaction (OER). Especially, as‐synthesized Fe0.7Co0.3CeOyelectrocatalyst shows very low overpotentials of 320 mV at the current density of 10 mA cm−2and the Tafel slop of 98.4 mV dec−1in 1 M KOH with remarkable durability for 24 h, which was due to the synergistic effect of multi‐metal FeCoCe centers. Furthermore, a two‐electrode cell of Fe0.7Co0.3CeOy/NF||Pt/C/NF realizes outstanding overall water splitting with a voltage of only 1.71 V at 10 mA cm−2and remarkable long‐term durability, that is even superior to benchmark IrO2/NF||Pt/C/NF counterpart.
Funder
National Natural Science Foundation of China
K. C. Wong Magna Fund in Ningbo University
Cited by
2 articles.
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