Production of a nickel-based catalyst for urea electrooxidation using spent batteries as raw material: Electrochemical synthesis and implications from a circular economy stand-point

Rueda, Héctor; Arenas, Miguel; Vargas, Ronald; Blanco, Sergio; Delvasto, Pedro

doi:10.1016/j.susmat.2021.e00296

Cited by 5 publications

(2 citation statements)

References 77 publications

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“…According to the literature, the introduction of Ni can serve as an adsorbent, and therefore the notorious polysulfide shuttle effect can be effectively suppressed. ,,, Additionally, due to the superior catalytic performance of Ni, the whole reaction kinetics can be accelerated (Figure S23). ,− The reaction barrier can be reduced correspondingly. The Nyquist plots for the two samples before cycling are shown in Figure f.…”

Section: Resultsmentioning

confidence: 99%

Employing Ni-Embedded Porous Graphitic Carbon Fibers for High-Efficiency Lithium–Sulfur Batteries

Wang

Cao

et al. 2022

ACS Appl. Mater. Interfaces

107

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The rational electrode design is one of the most important ways to enhance the electrochemical properties of lithium−sulfur batteries (LSBs). In this contribution, we use Niembedded porous graphitic carbon fiber (PGCF@Ni) as the scaffold to construct a novel cathode and anode for LSBs. With the help of elaborate surface engineering, the constructed solid electrolyte interface (SEI)@Li/PGCF@Ni anodes can effectively restrain the growth of lithium dendrites during the cycle, exhibiting an ultralow overpotential of ∼10 mV for 2000 h at 1 mA cm −2 /1 mA h cm −2 . The underlying mechanism is further investigated by COMSOL Multiphysics simulations. Additionally, the PGCF@Ni/S cathode fabricated by the molten sulfurizing method manifests superior rate performance and stability. Ultimately, the assembled SEI@Li/PGCF@Ni||PGCF@Ni/S full battery exhibits prominent electrochemical property with a high capacity retention of about 77.9% after 600 cycles at 1 C. Such success at the performance improvement in LSBs may open up avenues toward other rational designs of high-quality electrodes in electrochemical energy storage.

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Section: Resultsmentioning

confidence: 99%

Employing Ni-Embedded Porous Graphitic Carbon Fibers for High-Efficiency Lithium–Sulfur Batteries

Wang

Cao

et al. 2022

ACS Appl. Mater. Interfaces

107

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“…[5][6][7] Nickel and related oxides are considered suitable low-cost catalysts widely used in energy applications such as electrochemical capacitance, photocatalysis, batteries, solar cells, and urea electrooxidation. [8][9][10][11][12][13] Catalyst composed of two metallic, known as a bimetallic, have got much attention due to the synergetic effect between the two metals compared with monometallic counterparts. This leads to enhancing electrical conductivity and structure stability catalytic activity, sensitivity, and durability.…”

Section: Introductionmentioning

confidence: 99%

NiO‐MnOx/Polyaniline/Graphite Electrodes for Urea Electrocatalysis: Synergetic Effect between Polymorphs of MnOx and NiO.

et al. 2022

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In this work, we are enhancing the catalytic activity of the urea electrooxidation (UEO) process by using the composite of polyaniline (Pani), nickel oxide (NiO), and polymorphs of manganese oxide (MnOx) based on a graphite electrode. The hydro‐gel method was used to prepare catalyst suspension with different ratios from NiO and MnOx. The chemical structures and surface morphology were characterized by employing the IR, XRD, and SEM/EDEX techniques. The catalytic activity of four modified electrocatalysts G/Pani/NiMn1, G/Pani/NiMn2, G/Pani/NiMn3, G/Pani/NiMn4 was investigated using cyclic voltammetry, chronoamperometry, and electrochemical impedance. The kinetic parameters such as diffusion coefficient, Tafel slope, charge transfer coefficient, and surface coverage were calculated to choose the best electrocatalysts toward UEO in alkaline solution. The anodic current of new electrodes achieved about 16 mA.cm−2 at potential of 550 mV (vs. Ag/AgCl). Density functional theory studies (DFT) have been carried out to assess the adsorption energy between polyaniline (Pani) and the metal oxides.

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Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

Centi,

Liu,

Perathoner

2024

ChemSusChem

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Carbon circularity is crucial for achieving a circular economy but has wider implications and impacts with respect to the circularity of materials. It has an in‐depth transformative effect on the economy. CO2 recycling is a critical component for this objective, with catalysis and inorganic chemistry playing a determining role in achieving this challenge. This concept paper presents some examples, as food for thought, of unconventional aspects in developing thermal and electro/photocatalysts for recycling CO2. The aspects discussed regard designing novel materials for CO2 thermo‐ or electro‐conversion and developing novel nanostructured electrodes.

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Production of a nickel-based catalyst for urea electrooxidation using spent batteries as raw material: Electrochemical synthesis and implications from a circular economy stand-point

Cited by 5 publications

References 77 publications

Employing Ni-Embedded Porous Graphitic Carbon Fibers for High-Efficiency Lithium–Sulfur Batteries

Employing Ni-Embedded Porous Graphitic Carbon Fibers for High-Efficiency Lithium–Sulfur Batteries

NiO‐MnOx/Polyaniline/Graphite Electrodes for Urea Electrocatalysis: Synergetic Effect between Polymorphs of MnOx and NiO.

Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

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