Stable and active NiFeW layered double hydroxide for enhanced electrocatalytic oxygen evolution reaction

Guo, Pengfei; Yang, Yang; Wang, Wenjie; Zhu, Bing; Wang, Weitao; Wang, Zhongyu; Wang, Junlei; Wang, Kuan; He, Zhenhong; Liu, Zhao‐Tie

doi:10.1016/j.cej.2021.130768

Cited by 54 publications

(31 citation statements)

References 52 publications

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“…Obviously, this result agreed with the high catalytic performance of W-Ni(OH) 2 exhibited in Figure a. In W-Ni(OH) 2 , furthermore, one weak peak centered at ∼927 cm –1 always existed while increasing the potential, which should be attributed to the W 6+ –O–W 6+ symmetric stretching vibration . The above fact also confirmed that W 6+ was successfully incorporated into Ni(OH) 2 under the present electrodeposition conditions.…”

Section: Resultssupporting

confidence: 88%

W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

Wang

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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It is critical for converting renewable electricity into chemicals and fuels to develop electrocatalysts with good reactivity and high stability for oxygen evolution reaction (OER) using a cost-effective and straightforward manner. Here, we successfully fabricated W-doped α-Ni(OH)2 honeycomb-like microstructures deposited on nickel foam (NF) using an easy and fast one-step electrodeposition approach. Some parameters affecting the morphology and OER activity of the target product were systematically investigated, including the initial nickel source, the deposition time, and the deposition current density. It was found that W-doped α-Ni(OH)2 honeycomb-like microstructures deposited from the NiSO4 solution at −100 mA cm–2 for 15 min manifested the strongest electrocatalytic OER capability. In 1.0 M KOH, only 170/209 mV of overpotential was required for the as-obtained W-Ni(OH)2/NF electrode to launch a current density of 10/100 mA cm–2, respectively, outperforming most previously reported electrocatalysts. Also, the as-prepared catalyst showed outstanding long-term stability without attenuation over 400 h at a large current density of 250 mA cm–2. Distinctly, the present electrochemical deposition technology paves a facile and fast pathway for preparing nonprecious metal OER electrocatalysts with high electroactivity.

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Section: Resultssupporting

confidence: 88%

W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

Wang

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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“…The O 1s peaks (Figure 4i) at binding energies of 531.1 and 532.9 eV are assigned to the metal-hydroxyl (M−OH, M = Ni and Fe) bond and H−O−H bond in water, respectively. 20,38 These results verify that the Fe,V-NiSe 2 core occurred in the surface reconstruction during the ISAO and forms a core−shell Fe,V-NiSe 2 @amorphous NiFe(OH) x heterostructured electrocatalyst.…”

Section: Resultssupporting

confidence: 60%

“…An effective approach for conductivity optimization is metal cation doping, which can introduce a new impurity energy level, lower the band gap, reduce the activation energy barriers, and eventually improve the electron density and efficiency of electron transport. 19 Yang et al demonstrated that doping of W, 20 Cr, 21 and Ru 22 metal cations in NiFe layered double hydroxide (NiFe LDH) could enhance the synergistic interplay among multimetallic matrix centers, optimize the intrinsic conductivity, and improve the OER activity. The Sun group incorporated multivalent vanadium (V 5+ , V 4+ , and V 3+ ) into the NiFe LDH lattice to form the trimetallic NiFeV LDH, which exhibited a much higher catalytic activity than pure NiFe LDH for OER.…”

Section: Introductionmentioning

confidence: 99%

In Situ Anodic Oxidation Tuning of NiFeV Diselenide to the Core–Shell Heterojunction for Boosting Oxygen Evolution

et al. 2022

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Developing non-noble metal-based core–shell heterojunction electrocatalysts with high catalytic activity and long-lasting stability is crucial for the oxygen evolution reaction (OER). Here, we prepared novel core–shell Fe,V-NiSe2@NiFe(OH)x heterostructured nanoparticles on hydrophilic-treated carbon paper with high electronic transport and large surface area for accelerating the oxygen evolution rate via high-temperature selenization and electrochemical anodic oxidation procedures. Performance testing shows that Fe,V-NiSe2@NiFe(OH) x possesses the highest performance for OER compared to as-prepared diselenide core-derived heterojunctions, which only require an overpotential of 243 mV at 10 mA cm–2 and a low Tafel slope of 91.6 mV decade–1 under basic conditions. Furthermore, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) confirm the morphology and elementary stabilities of Fe,V-NiSe2@NiFe(OH) x after long-term chronopotentiometric testing. These advantages are largely because of the strong synergistic effect between the Fe,V-NiSe2 core with high conductivity and the amorphous NiFe(OH) x shell with enriched defects and vacancies. This study also presents a general approach to designing and synthesizing more active core–shell heterojunction electrocatalysts for OER.

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“…As observed in XPS, the shift of the Co 2p peak to higher binding energies is observed, which suggests that the electron density decreases at the Co sites in the presence of Fe(III). The existence of Fe(III) sites and decreased electron densities at Co sites would facilitate the OH – attack, which leads to a higher rate of the OH – adsorption process …”

Section: Resultsmentioning

confidence: 99%

Iron and Oxygen Codoped Cobalt Phosphide Solvothermally Prepared from a Metal–Organic Framework for Oxygen Evolution

et al. 2022

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The preparation of highly active and low-cost electrocatalysts is a major challenge for water electrolysis. Here, iron and oxygen codoped cobalt phosphide nanoparticles (O− Co 1−x Fe x P y , x = 0−0.42) are prepared by reacting metal−organic framework with phosphorus under solvothermal conditions. When electrochemically catalyzing the oxygen evolution reaction (OER) in 1 M KOH, O−Co 0.58 Fe 0.42 P y supported on the nickel foam exhibits the best activity, with only 232 mV overpotential to reach 10 mA cm −2 OER current densities. O−Co 0.58 Fe 0.42 P y is robust toward the long-term OER, and surface phosphide layers transform to (oxy)hydroxides during the OER. O−Co 1−x Fe x P y also shows better OER activity than Co 3 O 4 nanoparticles and commercial IrO 2 . The abundant electrochemically active sites exposed by the highly porous morphology and the electron interactions between Co and Fe that accelerate the OER intermediate adsorption process could account for the observed high OER activity.

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Stable and active NiFeW layered double hydroxide for enhanced electrocatalytic oxygen evolution reaction

Cited by 54 publications

References 52 publications

W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

In Situ Anodic Oxidation Tuning of NiFeV Diselenide to the Core–Shell Heterojunction for Boosting Oxygen Evolution

Iron and Oxygen Codoped Cobalt Phosphide Solvothermally Prepared from a Metal–Organic Framework for Oxygen Evolution

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Stable and active NiFeW layered double hydroxide for enhanced electrocatalytic oxygen evolution reaction

Cited by 54 publications

References 52 publications

W-Doped α-Ni(OH)2 Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

W-Doped α-Ni(OH)2 Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

In Situ Anodic Oxidation Tuning of NiFeV Diselenide to the Core–Shell Heterojunction for Boosting Oxygen Evolution

Iron and Oxygen Codoped Cobalt Phosphide Solvothermally Prepared from a Metal–Organic Framework for Oxygen Evolution

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W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution

W-Doped α-Ni(OH)₂ Honeycomb-like Microstructures for Promoted Electrochemical Oxygen Evolution