2018
DOI: 10.1002/admi.201701396
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Reverse Microemulsion‐Assisted Synthesis of NiCo2S4 Nanoflakes Supported on Nickel Foam for Electrochemical Overall Water Splitting

Abstract: COMMUNICATION 1701396 (1 of 8)

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Cited by 53 publications
(40 citation statements)
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References 51 publications
(55 reference statements)
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“…A cell voltage of 1.60 V was obtained to afford the current density of 10 mA cm −2 at room temperature (25 °C), which is only 370 mV higher than the value of 1.23 V (theoretical reversible voltage for water‐splitting reaction). Such a low catalytic overpotential of N‐NiMoO 4 /NiS 2 is 10, 50, and 80 mV, 100 and 240 mV, lower than the values of NiCo 2 S 4 /NF (1.61 V), NiCo 2 O 4 (1.65 V), Ni 5 P 4 Co 1 Mn 1 CH (1.68 V), (1.70 V), and NiCo 2 O 4 /NF (1.84 V), respectively, thus demonstrating N‐NiMoO 4 /NiS 2 as a highly efficient bifunctional catalyst for the overall water‐splitting electrolyzer. In adidition, the kinetics and thermodynamics can be greatly improved with the increase in temperature, showing a much lower voltage of 1.55 V (45 °C) and 1.50 V (65 °C) at the current density of 10 mA cm −2 .…”
Section: Resultsmentioning
confidence: 87%
“…A cell voltage of 1.60 V was obtained to afford the current density of 10 mA cm −2 at room temperature (25 °C), which is only 370 mV higher than the value of 1.23 V (theoretical reversible voltage for water‐splitting reaction). Such a low catalytic overpotential of N‐NiMoO 4 /NiS 2 is 10, 50, and 80 mV, 100 and 240 mV, lower than the values of NiCo 2 S 4 /NF (1.61 V), NiCo 2 O 4 (1.65 V), Ni 5 P 4 Co 1 Mn 1 CH (1.68 V), (1.70 V), and NiCo 2 O 4 /NF (1.84 V), respectively, thus demonstrating N‐NiMoO 4 /NiS 2 as a highly efficient bifunctional catalyst for the overall water‐splitting electrolyzer. In adidition, the kinetics and thermodynamics can be greatly improved with the increase in temperature, showing a much lower voltage of 1.55 V (45 °C) and 1.50 V (65 °C) at the current density of 10 mA cm −2 .…”
Section: Resultsmentioning
confidence: 87%
“…Using noble metal free electro catalysts are being in process in these recent researches; producing an efficient electro catalysts in affordable cost, sufficient long‐time stability with low over potential is still very complicated for large scale applications . Hence, researchers are synthesizing transition metal based oxides, sulphides, phosphides, carbides, nitrides and borides etc for electrochemical water splitting applications . Among other metal oxides, nickel and cobalt are the best and inevitable transition metals available in abundance with very good catalyzing ability towards OER activity.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, the XPS peak of S 2p, shown in Figure d, is deconvoluted into the two binding‐energy peaks at 161.7 and 162.9 eV, which correspond to the S 2p 3/2 and S 2p 1/2 orbitals of S 2− , respectively . The component at 163.9 eV is typical of the metal–S bonds, while the other peak at 168.6 eV belongs to the shakeup satellite …”
Section: Resultsmentioning
confidence: 99%
“…[27] Furthermore, the XPS peak of S 2p, shown in Figure 3d, is deconvoluted into the two binding-energy peaks at 161.7 and 162.9 eV, which correspond to the S 2p 3/2 and S 2p 1/2 orbitals of S 2− , respectively. [10,28] The component at 163.9 eV is typical of the metal-S bonds, while the other peak at 168.6 eV belongs to the shakeup satellite. [28] The electrochemical performances of the NiS-NC HS composites were investigated in the three-electrode system in the 3 m KOH aqueous solution (see the Experimental Section for details).…”
Section: Resultsmentioning
confidence: 99%
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