Low-crystalline β-Ni(OH)2 nanosheets on nickel foam with enhanced areal capacitance for supercapacitor applications

Liu, Gaofu; Qin, Yaohua; Lyu, Yizhi; Chen, Mingyue; Qi, Pengcheng; Lu, Yu; Sheng, Zhuwei; Tang, Yiwen

doi:10.1016/j.cej.2021.131248

Cited by 62 publications

(30 citation statements)

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“…A high energy density of 2.84 mW h cm À3 is reached by our Zn//FeNiCo cell, outperforming some developed AZBs, such as GNAC/NiCo 2 S 4 // AC batteries (0.61 mW h cm À3 ), 34 A-Ni/NC//Zn battery (0.66 mW h cm À3 ), 35 Zn 0.33 Co 0.67 P//Bi 2 O 3 battery (0.75 mW h cm À3 ), 36 Co 3 O 4 @NiO-ZnO battery (0.95 mW h cm À3 ), 37 CC-CCH@MO// CC-ZnO@C-Zn battery (1.00 mW h cm À3 ), 38 This journal is © The Royal Society of Chemistry 2022 mW h cm À3 ), 40 Fe 3 O 4 -C//CNTs battery (1.56 mW h cm À3 ), 41 CC@NVGMs//Zn battery (1.92 mW h cm À3 ), 42 Co 3 O 4 @NiO//Zn (2.10 mW h cm À3 ), 43 andb-Ni(OH) 2 //Zn (2.45 mW h cm À3 ). 44 In addition, our Zn//FeNiCo cell delivers a maximum power density of up to 0.45 W cm À3 . As shown in Fig.…”

Section: Resultsmentioning

confidence: 89%

Fe-decorated-NiCo layered double hydroxide nanoflakes via corrosion engineering for high-energy rechargeable Zn-based batteries

et al. 2022

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Section: Resultsmentioning

confidence: 89%

Fe-decorated-NiCo layered double hydroxide nanoflakes via corrosion engineering for high-energy rechargeable Zn-based batteries

et al. 2022

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“…In O 1s spectra (Figure c), three peaks were deconvoluted. The peaks of the metal–oxygen (M–O) bond and the adsorbed water were separately located at 530.5 and 532.3 eV in undoped and W-doped Ni(OH) 2 . , The M–OH bond slightly shifted from 531.1 eV in Ni(OH) 2 to 531.2 eV in W-Ni(OH) 2 . Compared to undoped Ni(OH) 2 , furthermore, W-Ni(OH) 2 possessed the lower peak intensity ratio of the M–O bond and the adsorbed water, suggesting that the integration of W increased the hydrophilicity of the catalyst .…”

Section: Resultsmentioning

confidence: 99%

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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“…Further, the deconvoluted O 1 s XPS of the Ni(OH) 2 /NiF sample displayed three peaks in the position of 529.4, 530.8 and 531.8 eV ( Figure S3B ) that can be ascribed to the presence of the O 2− , OH − , and H 2 O ads species, respectively. Notably, the existence of the OH − and H 2 O ab peaks demonstrated the growth of the Ni(OH) 2 nanosheets over the NiF during the process of the acid-etching [ 48 , 49 ]. Next, the Ni 2p XPS of NiO/NiF displayed two peaks at 853.1 eV and 871.2 eV that were attributed to Ni 2p 3/2 and Ni 2p 1/2 , respectively ( Figure 4 C), evidencing the occurrence of Ni 2+ .…”

Section: Resultsmentioning

confidence: 99%

Ni2P Nanoparticle-Inserted Porous Layered NiO Hetero-Structured Nanosheets as a Durable Catalyst for the Electro-Oxidation of Urea

Wang

Kannan

et al. 2022

Nanomaterials

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The electro-oxidation of urea (EOU) is a remarkable but challenging sustainable technology, which largely needs a reduced electro-chemical potential, that demonstrates the ability to remove a notable harmful material from wastewater and/or transform the excretory product of humans into treasure. In this work, an Ni2P-nanoparticle-integrated porous nickel oxide (NiO) hetero-structured nanosheet (Ni2P@NiO/NiF) catalyst was synthesized through in situ acid etching and a gas-phase phosphating process. The as-synthesized Ni2P@NiO/NiF catalyst sample was then used to enhance the electro-oxidation reaction of urea with a higher urea oxidation response (50 mA cm−2 at 1.31 V vs. RHE) and low onset oxidation potential (1.31 V). The enhanced activity of the Ni2P@NiO/NiF catalyst was mainly attributed to effective electron transport after Ni2P nanoparticle insertion through a substantial improvement in active sites due to a larger electrochemical surface area, and a faster diffusion of ions occurred via the interactive sites at the interface of Ni2P and NiO; thus, the structural reliability was retained, which was further evidenced by the low charge transfer resistance. Further, the Ni2P nanoparticle insertion process into the NiO hetero-structured nanosheets effectively enabled a synergetic effect when compared to the counter of the Ni2P/NiF and NiO/NiF catalysts. Finally, we demonstrate that the as-synthesized Ni2P@NiO/NiF catalyst could be a promising electrode for the EOU in urea-rich wastewater and human urine samples for environmental safety management. Overall, the Ni2P@NiO/NiF catalyst electrode combines the advantages of the Ni2P catalyst, NiO nanosheet network, and NiF current collector for enhanced EOU performance, which is highly valuable in catalyst development for environmental safety applications.

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Low-crystalline β-Ni(OH)2 nanosheets on nickel foam with enhanced areal capacitance for supercapacitor applications

Cited by 62 publications

References 53 publications

Fe-decorated-NiCo layered double hydroxide nanoflakes via corrosion engineering for high-energy rechargeable Zn-based batteries

Fe-decorated-NiCo layered double hydroxide nanoflakes via corrosion engineering for high-energy rechargeable Zn-based batteries

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

Ni2P Nanoparticle-Inserted Porous Layered NiO Hetero-Structured Nanosheets as a Durable Catalyst for the Electro-Oxidation of Urea

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Low-crystalline β-Ni(OH)2 nanosheets on nickel foam with enhanced areal capacitance for supercapacitor applications

Cited by 62 publications

References 53 publications

Fe-decorated-NiCo layered double hydroxide nanoflakes via corrosion engineering for high-energy rechargeable Zn-based batteries

Fe-decorated-NiCo layered double hydroxide nanoflakes via corrosion engineering for high-energy rechargeable Zn-based batteries

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

Ni2P Nanoparticle-Inserted Porous Layered NiO Hetero-Structured Nanosheets as a Durable Catalyst for the Electro-Oxidation of Urea

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