High-performance overall water splitting based on amorphous iron doped cobalt tungstate via facile co-precipitation
Exploring high-performance and low-cost bifunctional electrocatalysts is crucial for developing highly efficient overall water splitting cells. In this work, a facile and cheap co-precipitation method, which is compatible with large-scale production, is applied to prepare amorphous Fe-doped CoWO 4 b...
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Published in | Journal of materials chemistry. A, Materials for energy and sustainability Vol. 9; no. 15; pp. 9753 - 9760 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
01.01.2021
|
Subjects | |
Online Access | Get full text |
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Summary: | Exploring high-performance and low-cost bifunctional electrocatalysts is crucial for developing highly efficient overall water splitting cells. In this work, a facile and cheap co-precipitation method, which is compatible with large-scale production, is applied to prepare amorphous Fe-doped CoWO
4
bifunctional electrocatalysts. Low overpotentials of 259 and 118 mV to reach a current density of 10 mA cm
−2
for the OER and HER in 1 M KOH are found, respectively. Moreover, no detectable potential decay is observed at 50 mA cm
−2
for at least 15 h, revealing its excellent long-term stability. Finally, a highly efficient overall water splitting cell is assembled with amorphous Fe-doped CoWO
4
as a bifunctional electrocatalyst. A low cell voltage of 1.55 V is required to achieve a current density of 10 mA cm
−2
, which surpasses the benchmark IrO
2
‖Pt/C cell. |
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ISSN: | 2050-7488 2050-7496 |
DOI: | 10.1039/D1TA00001B |