NiFeP nanoflakes composite with CoP on Carbon Cloth as flexible and durable electrocatalyst for efficient overall water splitting.

Clicks: 308
ID: 12330
2019
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Abstract
High-performance and earth-abundant NiFeP is an excellent bifunctional catalyst for water splitting in the acidic and alkaline environments and NiFeP nanoflakes on CoP layer composite with a conductive carbon cloth (CC) substrate as the trunk-leaf flexible structure (NiFeP/CoP/CC) is prepared by direct high-temperature phosphorization. Overpotentials of only 96.38 mV and 78.80 mV are required in hydrogen evolution reaction (HER) in 1 M KOH and 0.5 M H2SO4, respectively, to generate an electrocatalytic current density of 10 mA cm-2. A small Tafel slope of 70.67 and 63.21 mV per decade are also observed from NiFeP/CoP/CC revealing a Volmer Heyrovsky mechanism in both media. The electrocatalyst also delivers excellent oxygen evolution reaction (OER) performance in the alkaline environment and long-term electrochemical durability for at least 24 h in electrolytes over a wide pH range. A device is assembled with two identical flexible ultrathin NiFeP/CoP/CC as both the anode and cathode in 1 M KOH driven by a set of 1.6 V solar cells. During 32 h electrolysis, the results show that the current of our electrodes maintains 80% performance at a constant voltage of 1.7 V for 32 h and the NiFeP/CoP/CC anodes and cathodes have large potential in industrial alkaline water splitting.
Reference Key
li2019nifepnanotechnology Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Li, Mai;Li, Sa;Wang, Jiale;Wang, Chunrui;Li, Wan;Chu, Paul K;
Journal Nanotechnology
Year 2019
DOI
10.1088/1361-6528/ab3cd9
URL
Keywords Keywords not found

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