A new catalyst for urea oxidation: NiCo2S4 nanowires modified 3D carbon sponge

Li, Biaopeng; Song, Chunxia; Rong, Jianjun; Zhao, Jing; Wang, Hong‐En; Yang, Ping; Ye, Ke; Cheng, Kui; Zhu, Kai; Yan, Jun

doi:10.1016/j.jechem.2019.12.018

Cited by 37 publications

(14 citation statements)

References 67 publications

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“…Therefore, compared to acidic or neutral UOR, alkaline UOR is more promising. For alkaline UOR, owing to the intrinsic higher activities, Ni-based catalysts (Ni-containing metals, 80–84 oxides, 85–90 hydroxides, 91–97 sulfides, 98–102 phosphides, 103–105 selenides, 106–108 nitrides, 109–113 etc. ) have been more widely investigated among all transition metal-based catalysts.…”

Section: Reaction Mechanism Of the Uormentioning

confidence: 99%

Strategies for designing more efficient electrocatalysts towards the urea oxidation reaction

et al. 2022

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Section: Reaction Mechanism Of the Uormentioning

confidence: 99%

Strategies for designing more efficient electrocatalysts towards the urea oxidation reaction

et al. 2022

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“…Similarly, Ma et al investigated Ni-MOF with different morphologies, such as nanowires, neurons, and urchins, and found that the Ni-MOF nanowires require ∼0.8 V ( vs Ag/AgCl) to obtain a current density of 160 mA cm –2 . Thus, based on the previous studies, the nickel-based materials’ electrocatalytic behavior is well understood, making them ideal candidates for UOR. , However, there is still sluggish kinetics of UOR at the anodic area owing to the multielectron transfer and multiple gas adsorption/desorption procedures. − To address this key issue, the coordination of high surface area and conductive materials are considered beneficial for expanding the electrochemically active surface area. − The bioderived carbon-doped nickel can provide the electrochemically active high surface area and conductivity in the material selection, resulting in efficient substrates . Innovations with UOR from organic and bioderived compounds have yielded substantial improvements in energy production efficiency. , …”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

Hummel

et al. 2021

ACS Sustainable Chem. Eng.

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Here, we reported a strategy of using an eggshell membrane to produce hierarchically porous carbon as a low-cost substrate for synthesizing nano nickel oxide catalyst (C@NiO), which can effectively turn biowaste -urea into energy through an electrochemical approach. The interwoven carbon networks within NiO led to highly efficient urea oxidation due to the strong synergistic effect. The as-prepared electrode only needed 1.36 V versus reversible hydrogen electrode to realize high efficiency of 10 mA cm -2 in 1.0 M KOH with 0.33 M urea and delivered an even higher current density of 25 mA cm -2 at 1.46 V, which is smaller than that of the porous carbon and commercial Pt/C catalyst. Benefiting from theoretical calculations, Ni(III) active species and the porous carbon further enabled the electrocatalyst to effectively inhibit the "CO2 poisoning" of electrocatalysts, as well as ensuring its superior performance for urea oxidation.

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“…Highly efficient catalysts are thus required to accelerate the reaction kinetics, and multifarious catalysts have been developed. 21–29 Among them, noble metals are restricted by their high cost, and attention has been directed to nickel-based materials that have low cost but promising electrocatalytic activity. 30–32…”

Section: Introductionmentioning

confidence: 99%