The proposed method of predicting electrochemical parameters of multicomponent oxide surfactant compositions with a perovskite structure utilizes the factorial statistical analysis. The method originated from results of experimental investigations of the effects of a variety of physical/chemical factors of the oxide crystal structure (effective radii, effective electrical resistance and total valence of ions, number of unbound d-electrons, ion fraction within the ion-valent admixture, relative deflection of ad-component radius) etc. Slope of the linear segment of polarized curve and anode potential in close-to-equilibrium conditions were chosen to be the criteria of the electrochemical activity of oxide compositions.
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ACS Omega
January 2025
Critical Materials Innovation Hub (CMI), Energy and Environment Science and Technology (EES&T) Division, Idaho National Laboratory, 1955 N. Fremont Avenue, P.O. Box 1625, Idaho Falls, Idaho 83415, United States.
Cobalt, a critical metal, is anticipated to increase in market demand in the next couple of decades, particularly as a battery material used in electric vehicle application. To boost the domestic production of cobalt in the United States, an electrochemical process has been developed to recover cobalt from a cobaltite-rich concentrate and produce cobalt- and arsenic-rich leachate. The leaching efficiency of cobalt was optimized with a response surface methodology by modifying the electrochemical parameters.
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January 2025
Department of Chemistry, DAV College, Sector-10, Chandigarh 160011,India.
This study investigates solute-solvent interactions in ternary systems consisting of lithium trifluoromethanesulfonate (LiOTf) as the solute and tetraethylene glycol dimethyl ether (TEGDME) and 1,2-dimethoxyethane (DME) as solvents over a range of temperatures (293.15-313.15 K).
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January 2025
School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, P.R. China.
Graphdiyne (GDY), which is composed of benzene rings and acetylene linkage units, is a new allotrope of carbon material. In particular, the large triangular pores of GDY, with a diameter of 5.4 Å, theoretically predict a higher lithium embedding density than traditional graphite anodes, making it a promising candidate for energy storage materials in lithium-ion (Li-ion) batteries.
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January 2025
Université de Lorraine and CNRS, LPCT, UMR 7019, F-54000 Nancy, France.
The efficient functioning of dye-sensitized solar cells (DSSCs) is governed by the interplay of three essential components: the semiconductor, the dye, and the electrolyte. While the impact of the electrolyte composition on the device's performance has been extensively studied in n-type DSSCs, much less is known about p-type-based devices. Here, we investigate the effect of potential-determining ions on the energetics and stability of dye-sensitized NiO surfaces by using electrochemical, ab initio molecular dynamics simulations, and ab initio electronic structure calculations.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
City University of Hong Kong, Materials Science and Engineering, 83 Tat Chee Ave., Kowloon, HONG KONG.
Recently, aqueous proton batteries have shown promise for electrochemical energy storage using MXene electrodes. However, designing high-performance MXene proton batteries remains challenging due to the inevitable hydrogen evolution reaction (HER), the vast chemical composition space of MXene, and the unclear proton transport mechanism. To tackle these challenges, we established a general descriptor based on structural units of MXenes, termed the octahedral net charge descriptor (Qoct).
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