Achieving high quantum capacitance graphdiyne through doping and adsorption

Yang, Gang; Li, Zhuo; Wang, Siqi; Lin, Jianyan

doi:10.1039/d2cp03861g

Cited by 9 publications

(14 citation statements)

References 45 publications

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“…We assign the temperature where it saturates as the cutoff temperature. The cutoff temperature is found to be different for the different metals adsorbed on the surface of graphdiyne (Figure B) . In the case of ZrCO 2 , C Q of pristine MXene has almost no impact on the temperature.…”

Section: Temperature Dependencymentioning

confidence: 96%

“…Indeed, the existence of ZnO in the structure has been confirmed from the X-ray diffraction (XRD), energy-dispersive X-ray (EDX), and transmission electron microscopy (TEM) analyses. 65 In this case, we prefer the terminology of "nanoparticle decoration", "foreign atom adsorption", 14 or sometimes "heterostructure". 66 Figure 11A summarizes the theoretical results of the quantum capacitance of nanoparticle-decorated graphene and vacancy-defected graphene.…”

Section: Doping Concentrationmentioning

confidence: 99%

“…Theoretical quantum capacitance variation of (A) graphene, (B) graphdyne, and (C) ZrCO 2 MXene with respect to the temperature. These panels were reproduced with permission from refs − . Copyrights 2019 IOP Publishing, Ltd., 2023 Royal Society of Chemistry, and 2021 Wiley Periodicals LLC, respectively.…”

Section: Temperature Dependencymentioning

confidence: 99%

“…Likewise, N-doped graphdiyne doped at site II with a concentration of 5.56% exhibited differential C Q of 6150 F/g at 0.6 V. The theoretical report also estimated integrated C Q , because total storage capacity depends upon it, with the B-doped graphdiyne as the anode and N-doped graphdyine as the cathode being 10 557 and 6938 F/g at the doping concentration of 5.56%, respectively . For further enhancement, Cu adsorption on B/N-doped graphdyne presented a compelling advantage over the doping alone case . These high C Q values are appealing and, thus, need further investigations.…”

Section: Carbon-based Materialsmentioning

confidence: 99%

“…Some other factors, like doping and defect concentration, number of layers, and curvatures, also have a significant impact on the quantum capacitance. It has also been seen from the simulation results that quantum capacitance also depends upon the type of electrolyte ions and the temperature. − Hence, a proper combination of pristine electrode materials, heteroatoms, defects, and types of electrolyte ions is necessary to obtain the best quantum capacitance value and, hence, the total capacitance, energy/power density, and other key parameters of SCs.…”

Section: Introductionmentioning

confidence: 99%

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Quantum Capacitance of Two-Dimensional-Material-Based Supercapacitor Electrodes

Ghosh,

Behera,

Mishra

et al. 2023

Energy Fuels

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Electrochemical energy storage technology has emerged as one of the most viable solutions to tackle the challenge of fossil-fuel-based technology and associated global pollution. Supercapacitors are widely used for high-power applications, and there is tremendous ongoing effort to make them useful for high-energy storage applications. While electrode materials of supercapacitors play a central role in charge storage performance, insights into the contribution from different charge storage mechanisms are crucial from both fundamental and applied aspects. In this context, apart from the electric double layer and fast redox reaction at/near the surface, another pronounced contribution from the electrode is quantum capacitance (C Q). Here, the origin of C Q, how it contributes to the total capacitance, the possible strategies to improve it, and the state-of-art C Q of electrode materials, including carbon, two-dimensional materials, and their composites, are discussed. Although most of the studies on quantifying C Q are theoretical, some case studies on experimental measurements using standard electrochemical techniques are summarized. With an overview and critical analysis of theoretical studies on quantum capacitance of electrode materials, this review critically examines the supercapacitor design strategies, including choosing the right materials and electrolytes. These insights are also relevant to other types of clean energy storage technologies, including metal-ion capacitors and batteries.

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Section: Temperature Dependencymentioning

confidence: 96%

Section: Doping Concentrationmentioning

confidence: 99%

Section: Temperature Dependencymentioning

confidence: 99%

Section: Carbon-based Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quantum Capacitance of Two-Dimensional-Material-Based Supercapacitor Electrodes

Ghosh,

Behera,

Mishra

et al. 2023

Energy Fuels

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Multi‐responsive co‐assembled polyurethane nanomicelles as anticancer drug delivery carriers

Liu,

Zhao,

Tao

et al. 2024

J of Applied Polymer Sci

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In order to obtain a kind of anticancer drug delivery carriers with good stability in blood circulation, high cellular uptake, and controlled drug release ability, folate‐modified polyurethane with disulfide bonds and amino groups (FPUSN) and polyurethane with carboxyl groups (PUC) were respectively synthesized. FPUSN and PUC could co‐assemble in water to form nanomicelles (FPUSN/PUC) via electrostatic interaction. When the mass ratio of FPUSN to PUC was 12, FPUSN/PUC‐12 micelles had obvious negative‐to‐positive charge‐reversal property with decreasing pH from 7.4 to 5.0. Doxorubicin‐loaded micelles (FPUSN/PUC‐12@DOX) with negative charges showed excellent stability under simulated normal physiological condition. However, the charge‐reversal happened at pH 6.5 and positive charges increased with the pH decrease. When the glutathione concentration was 10 mM, the structure of FPUSN/PUC‐12@DOX micelles was broken. So FPUSN/PUC‐12@DOX micelles exhibited significant acid/reduction‐sensitive drug release properties and then DOX could be rapidly released in simulated tumor intracellular environment. Cellular experimental results demonstrated that FPUSN/PUC‐12 micelles could enhance cellular uptake under acid condition and FPUSN/PUC‐12@DOX micelles had better anti‐proliferation effect against HGC‐27 cells at pH 6.5 than that at pH 7.4 owing to multi‐responsive synergistic effects. Therefore, FPUSN/PUC micelles will have great application potential as drug delivery carriers for enhancing anticancer efficacy.

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