Ionothermal synthesis of activated carbon from waste PET bottles as anode materials for lithium-ion batteries

Ehi-Eromosele, C. O.; Onwucha, Chizoom N.; Ajayi, Samuel O.; Melinte, Georgian; Hansen, Anna‐Lena; Indris, Sylvio; Ehrenberg, Helmut

doi:10.1039/d2ra06786b

Cited by 11 publications

(3 citation statements)

References 58 publications

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“…X-ray diffraction patterns suggests the absence of large aggregated metallic nanoparticles, as no sharp diffraction peaks are observed (Figure S2, Supporting Information), and confirm the amorphous nature of the nitrogendoped carbon supports as observed previously in ionothermal transformations. [35,36] The small broad peak in TAP 900@Fe and TAP 900@Ni at ≈13 o relates to graphite oxide (001), [37][38][39] while the ≈25 o (002) of graphite is not present in any TAP-derived material, suggesting a graphene-like structure.…”

Section: Resultsmentioning

confidence: 99%

Reaching the Fundamental Limitation in CO₂ Reduction to CO with Single Atom Catalysts

Sarma

Barrio

Bagger

et al. 2023

Adv Funct Materials

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The electrochemical CO2 reduction reaction (CO2RR) to value‐added chemicals with renewable electricity is a promising method to decarbonize parts of the chemical industry. Recently, single metal atoms in nitrogen‐doped carbon (MNC) have emerged as potential electrocatalysts for CO2RR to CO with high activity and faradaic efficiency, although the reaction limitation for CO2RR to CO is unclear. To understand the comparison of intrinsic activity of different MNCs, two catalysts are synthesized through a decoupled two‐step synthesis approach of high temperature pyrolysis and low temperature metalation (Fe or Ni). The highly meso‐porous structure results in the highest reported electrochemical active site utilization based on in situ nitrite stripping; up to 59±6% for NiNC. Ex situ X‐ray absorption spectroscopy (XAS) confirms the penta‐coordinated nature of the active sites. The catalysts are amongst the most active in the literature for CO2 reduction to CO. The density functional theory calculations (DFT) show that their binding to the reaction intermediates approximates to that of Au surfaces. However, it is found that the turnover frequencies (TOFs) of the most active catalysts for CO evolution converge, suggesting a fundamental ceiling to the catalytic rates.

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Section: Resultsmentioning

confidence: 99%

Reaching the Fundamental Limitation in CO₂ Reduction to CO with Single Atom Catalysts

Sarma

Barrio

Bagger

et al. 2023

Adv Funct Materials

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“…The peak distances extracted from the ED (graph inserted in Figure S12f) are 2.10 Å (4.77 nm –1 ), 1.22 Å (8.23 nm –1 ), and 1.17 Å (8.54 nm –1 ), and from the ePDF analysis, they are 1.42, 2.57, 3.89, 5.00, and 6.45 Å (main graph in Figure S12f). These distances correspond to a graphitization of PDA. − The increase in the degree of ordering (graphitization) was also calculated using the equation for structural length coherence (LSC), which shows an increase from 3.08 Å (PDA) to 6.46 Å (PDA heated to 1000 °C). The LSC can be understood as a volumetric measurement, which means that the graphitization increases approximately 9 times after heating process.…”

Section: Resultsmentioning

confidence: 99%

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Rocha,

de Oliveira,

Bettini

et al. 2023

ACS Meas. Sci. Au

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Electrochemical paper-based analytical devices represent an important platform for portable, low-cost, affordable, and decentralized diagnostics. For this kind of application, chemical functionalization plays a pivotal role to ensure high clinical performance by tuning surface properties and the area of electrodes. However, controlling different surface properties of electrodes by using a single functionalization route is still challenging. In this work, we attempted to tune the wettability, chemical composition, and electroactive area of carbon-paper-based devices by thermally treating polydopamine (PDA) at different temperatures. PDA films were deposited onto pyrolyzed paper (PP) electrodes and thermally treated in the range of 300−1000 °C. After deposition of PDA, the surface is rich in nitrogen and oxygen, it is superhydrophilic, and it has a high electroactive area. As the temperature increases, the surface becomes hydrophobic, and the electroactive area decreases. The surface modifications were followed by Raman, X-ray photoelectron microscopy (XPS), laser scanning confocal microscopy (LSCM), contact angle, scanning electron microscopy (SEM-EDS), electrical measurements, transmission electron microscopy (TEM), and electrochemical experiments. In addition, the chemical composition of nitrogen species can be tuned on the surface. As a proof of concept, we employed PDA-treated surfaces to anchor [AuCl 4 ] − ions. After electrochemical reduction, we observed that it is possible to control the size of the nanoparticles on the surface. Our route opens a new avenue to add versatility to electrochemical interfaces in the field of paper-based electrochemical biosensors.

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“…The anode materials are one of the main factors affecting the performance of LIBs. Graphite is widely used as an anode material in commercial LIBs, but its low theoretical capacity (372 mAh g −1 ) and power density (∼ 300 W kg −1 ) could not satisfy the requirements of high-performance LIBs [4,5]. Thus, it is an urgent need to develop new anode materials to improve the power density of LIBs.…”

Section: Introductionmentioning

confidence: 99%

Dimensional-transformation of hexagonal antimonene nanosheets through the manipulation of reduction kinetics

Sun

Zheng

Liu

et al. 2023

Mater. Res. Express

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Antimonene (Sb) has been widely studied owing to its high carrier mobility, high thermal conductivity, and tunable electronic properties. Conventional synthetic methods for antimonene nanosheets (Sb-NSs) are more complex and multistep reactions, mainly including the epitaxial growth method, mechanical peeling method, electrochemical separation method, and liquid-phase separation method. Here, we report a simple method for the synthesis of Sb-NSs on Ni foam from twodimensional (2D) nanosheets to one-dimensional (1D) nanowires via hydrothermal method. The fabricated hexagonal Sb-NSs exhibit a transverse scale of 400 nm and a thickness of approximately 50 nm. When evaluated as anode materials for lithium storage, hexagonal Sb-NSs deliver a high reversible capacity of 870.3 mAh g-1 at 0.2 A g-1 and a reversible capacity of 375 mAh g-1 at 0.2 A g-1 after 60 cycles.As a result, the successful preparation of dimensional-switching Sb-NMs provides a new class of 2D materials for LIBs.

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Ionothermal synthesis of activated carbon from waste PET bottles as anode materials for lithium-ion batteries

Abstract: PET-derived activated carbons prepared by a facile method are promising anodes for sustainable lithium-ion batteries and ensure PET circularity.

Cited by 11 publications

References 58 publications

Reaching the Fundamental Limitation in CO₂ Reduction to CO with Single Atom Catalysts

Reaching the Fundamental Limitation in CO₂ Reduction to CO with Single Atom Catalysts

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Dimensional-transformation of hexagonal antimonene nanosheets through the manipulation of reduction kinetics

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Ionothermal synthesis of activated carbon from waste PET bottles as anode materials for lithium-ion batteries

Abstract: PET-derived activated carbons prepared by a facile method are promising anodes for sustainable lithium-ion batteries and ensure PET circularity.

Cited by 11 publications

References 58 publications

Reaching the Fundamental Limitation in CO2 Reduction to CO with Single Atom Catalysts

Reaching the Fundamental Limitation in CO2 Reduction to CO with Single Atom Catalysts

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Dimensional-transformation of hexagonal antimonene nanosheets through the manipulation of reduction kinetics

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Product

Resources

About

Reaching the Fundamental Limitation in CO₂ Reduction to CO with Single Atom Catalysts

Reaching the Fundamental Limitation in CO₂ Reduction to CO with Single Atom Catalysts