Defect-rich engineering and F dopant Co-modulated NiO hollow dendritic skeleton as a self-supported electrode for high-current density hydrogen evolution reaction

Zhang, Fan; Ji, Renjie; Liu, Yonghong; Z, Li; Liu, Zheng; Lu, Shuaichen; Wang, Yating; Wu, Xia; Jin, Hui; Cai, Baoping

doi:10.1016/j.cej.2020.126037

Cited by 52 publications

(25 citation statements)

References 51 publications

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“…This indicates that the corrosion resistance of the coating is enhanced. EIS is a powerful and non-destructive electrochemical technology to confirm electrochemical reaction and study the corrosion behavior of electrode/electrolyte interface [26][27][28][29]. Figure 9b shows the typical Nyquist plots of the Ni-SiC composite coatings.…”

Section: 3mentioning

confidence: 99%

Efficient Preparation of Nanoparticles Reinforced Nickel-based Composite Coating with Highly Preferred (220) Orientation

Jin

Liu

et al. 2020

Preprint

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Nanoparticles reinforced metal matrix composite coatings have great application potential in mechanical parts surface strengthening due to their excellent mechanical properties. This paper reports a phenomenon that the grain orientation gradually evolves to (220) with the deposition current density increasing when preparing nanoparticles reinforced nickel-based composite coatings by jet electrodeposition (JED). During the preparation of Ni-SiC composite coatings, the deposition current density increases from 180 A/dm2 to 220 A/dm2, and TC(220) gradually increases from 41.4% to 97.7% correspondingly. With the increase of TC(220), the self-corrosion potential increases from -0.575 V to -0.477 V, the corrosion current density decreases from 9.52 μA·cm2 to 2.76 μA·cm2, the diameter of corrosion pits that after 10 days of immersion in 3.5 wt% NaCl solution decreases from 278~944 nm to 153~260 nm, and the adhesion of the coating is increased from 24.9 N to 61.6 N. Compared with conventional electrodeposition (CED), the Ni-SiC composite coating prepared by JED has the advantages of smooth surface morphology, corrosion resistance and strong adhesion, which is more obvious with the increase of TC (220).

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Section: 3mentioning

confidence: 99%

Efficient Preparation of Nanoparticles Reinforced Nickel-based Composite Coating with Highly Preferred (220) Orientation

Jin

Liu

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…This indicates that the corrosion resistance of the coating was enhanced. EIS is a powerful and nondestructive electrochemical technology to confirm electrochemical reactions and study the corrosion behavior of electrode/electrolyte interface [26][27][28][29]. Figure 9b shows the typical Nyquist plots of the Ni-SiC composite coatings.…”

Section: Corrosion Resistance Of Ni-sic Composite Coating With Highlymentioning

confidence: 99%

Efficient Preparation of Nanoparticle-Reinforced Nickel-based Composite Coating with Highly Preferred (220) Orientation

Jin

et al. 2020

Chin. J. Mech. Eng.

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Nanoparticle-reinforced metal matrix composite coatings have significant potential in mechanical part surface strengthening owing their excellent mechanical properties. This paper reports a phenomenon in which the grain orientation gradually evolves to (220) as the deposition current density increases when preparing nanoparticle-reinforced nickel-based composite coatings through jet electrodeposition (JED). During the preparation of the Ni-SiC composite coatings, the deposition current density increased from 180 A/dm2 to 220 A/dm2, and TC(220) gradually increase from 41.4% to 97.7%. With an increase of TC(220), the self-corrosion potential increases from −0.575 to −0.477 V, the corrosion current density decreases from 9.52 μA/cm2 to 2.76 μA/cm2, the diameter of the corrosion pits that after 10 days of immersion in a 3.5 wt% NaCl solution decreases from 278–944 nm to 153–260 nm, and the adhesion of the coating increases from 24.9 N to 61.6 N. Compared a conventional electrodeposition (CED), the Ni-SiC composite coating using JED has the advantages of a smooth surface morphology, high corrosion resistance, and strong adhesion, which are more obvious with an increase in TC(220).

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“…Therefore, it is much more appealing to develop facile and effective strategies to obtain earthabundant phosphates alternatives to the state-of-art precious group metal-based electrocatalysts, thereby directly reducing costs and improving the water splitting efficiency. Among these currently reported strategies, the heteroatom doping into the electrocatalysts is proven for boosting electrocatalytic performance [17][18][19][20][21][22][23][24][25][26][27][28][29][30] including cationic doping (such as Fe, Ni, Co) [2,17,18] and anionic doping (such as N, C, F, P and S) [19][20][21][22][23][24][25][26][27][28][29][30][31] because they could regulate the electronic structure, improve electrical conductivity, bringing in rich-defects and increase their active sites, above all, the aliovalent anion substitution could optimize the adsorption of intermediates, thus, driving high current-density at low overpotential and enhancing their electrocatalytic performance. For example, Huang et al reported N-doped carbon shelled bimetallic phosphates (Fe x Co y P 2 O 7 @NÀ C) which exhibited high activity and stability for overall water splitting.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Huang et al reported N-doped carbon shelled bimetallic phosphates (Fe x Co y P 2 O 7 @NÀ C) which exhibited high activity and stability for overall water splitting. [26] F as a strong electron-withdrawing atom is widely adopted to increase the carrier density of hematite, consequently, dramatically boosting the OER kinetics; [29][30][31][32][33] moreover, via F À doping, the generation of the highly oxidative oxygen species (O 2 2À /O À ) could contribute to the better OER properties of perovskite. [32] As so far, the multiheteroatoms have been widely doped into metal-free nanomaterials, however, it is still rarely reported this aliovalent anions doped into phosphates.…”

Section: Introductionmentioning

confidence: 99%

Rational Construction of a N, F Co‐doped Mesoporous Cobalt Phosphate with Rich‐Oxygen Vacancies for Oxygen Evolution Reaction and Supercapacitors

Pan

Guo

et al. 2021

Chemistry A European J

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Transition‐metal phosphates have been widely applied as promising candidates for electrochemical energy storage and conversion. In this study, we report a simple method to prepare a N, F co‐doped mesoporous cobalt phosphate with rich‐oxygen vacancies by in‐situ pyrolysis of a Co‐phosphate precursor with NH4+ cations and F− anions. Due to this heteroatom doping, it could achieve a current density of 10 mA/cm2 at lower overpotential of 276 mV and smaller Tafel slope of 57.11 mV dec−1 on glassy carbon. Moreover, it could keep 92 % of initial current density for 35 h, indicating it has an excellent stability and durability. Furthermore, the optimal material applied in supercapacitor displays specific capacitance of 206.3 F g−1 at 1 A ⋅ g−1 and maintains cycling stability with 80 % after 3000 cycles. The excellent electrochemical properties should be attributed to N, F co‐doping into this Co‐based phosphate, which effectively modulates its electronic structure. In addition, its amorphous structure provides more active sites; moreover, its mesoporous structure should be beneficial to mass transfer and electrolyte diffusion.

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Defect-rich engineering and F dopant Co-modulated NiO hollow dendritic skeleton as a self-supported electrode for high-current density hydrogen evolution reaction

Cited by 52 publications

References 51 publications

Efficient Preparation of Nanoparticles Reinforced Nickel-based Composite Coating with Highly Preferred (220) Orientation

Efficient Preparation of Nanoparticles Reinforced Nickel-based Composite Coating with Highly Preferred (220) Orientation

Efficient Preparation of Nanoparticle-Reinforced Nickel-based Composite Coating with Highly Preferred (220) Orientation

Rational Construction of a N, F Co‐doped Mesoporous Cobalt Phosphate with Rich‐Oxygen Vacancies for Oxygen Evolution Reaction and Supercapacitors

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