Artikel: Construction of orderly hierarchical FeOOH/NiFe layered double hydroxides supported on cobaltous carbonate hydroxide nanowire arrays for a highly efficient oxygen evolution reaction
Journal of materials chemistry. 2018 Feb. 20, v. 6, no. 8
2018
Abstract: An orderly hierarchical hybrid electrode has been constructed for the oxygen evolution reaction (OER) in this work. FeOOH/NiFe layered double hydroxide (LDH) nanoplates are grown on cobaltous carbonate hydroxide nanowire arrays (CCH NAs) directly, with ... ...
Abstract | An orderly hierarchical hybrid electrode has been constructed for the oxygen evolution reaction (OER) in this work. FeOOH/NiFe layered double hydroxide (LDH) nanoplates are grown on cobaltous carbonate hydroxide nanowire arrays (CCH NAs) directly, with nickel foam (NF) as a conductive substrate. This FeOOH/NiFe LDHs@CCH NAs-NF with orderly hierarchical construction of FeOOH/NiFe LDH nanoplates supported on cobaltous carbonate hydroxide nanowire arrays exhibits superior activity for the OER, which delivers current densities of 10 and 100 mA cm⁻² at overpotentials of 220 and 290 mV, respectively, and excellent stability at 10, 100, 300, and 500 mA cm⁻² for 40 hours in 1 M KOH. For commercial applications, an alkaline polymer electrolyte water electrolyzer (APEWE) with this electrode shows 1.768 V at 500 mA cm⁻², exhibiting higher working current density than typical commercial alkaline water electrolyzers. A chronopotentiometry test in 1 M KOH at 500 mA cm⁻² reveals that the performance of the APEWE is stable at ∼1.8 V for about 100 hours. |
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Schlagwörter | alkalinity ; carbonates ; electrodes ; electrolytes ; foams ; iron oxyhydroxides ; nanowires ; nickel ; oxygen production ; polymers ; potassium hydroxide ; water |
Sprache | Englisch |
Erscheinungsverlauf | 2018-0220 |
Umfang | p. 3397-3401. |
Erscheinungsort | The Royal Society of Chemistry |
Dokumenttyp | Artikel |
ZDB-ID | 2702232-8 |
ISSN | 2050-7496 ; 2050-7488 |
ISSN (online) | 2050-7496 |
ISSN | 2050-7488 |
DOI | 10.1039/c7ta10747a |
Datenquelle | NAL Katalog (AGRICOLA) |
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