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Graphene oxide (GO) shows high proton conductivity (≈10 Scm), excellent mechanical stability, and electrical insulation property, which makes it an ideal candidate for use as a proton conducting solid state electrolyte. The prospects of using GO as single phase solid electrolyte in an all solid battery is presented herein. A battery with the cell configuration: Zn + ZnSO•7HO + graphite (anode) || GO (electrolyte) || MnO + graphite (cathode) is fabricated. Cyclic voltammetry confirms its rechargeable nature. The respective discharge capacity and power density of the cell are 360 μAh and 19.5 mW kg at a constant current drain of 3 μA under the experimental conditions employed. GO based proton conductors are cleaner and cheaper than other solid electrolytes. The current study strongly suggests that GO can be used as a practical and beneficial component in solid state battery applications with low energy feedback.
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http://dx.doi.org/10.1002/gch2.201700054 | DOI Listing |
Anal Chem
September 2025
Institute of Biological Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 38, 1090 Vienna, Austria.
The discovery of solute precursors of crystalline materials, such as biominerals, recently challenged the classical nucleation theory (CNT). One emerging method for investigating these early-stage intermediates in solution is dissolution dynamic nuclear polarization (dDNP)-enhanced nuclear magnetic resonance (NMR) spectroscopy. Recent applications of dDNP to calcium carbonate (CaC) and calcium phosphate (CaP) mineralization have demonstrated the feasibility of identifying and tracing very early-stage prenucleation clusters (PNCs).
View Article and Find Full Text PDFDalton Trans
September 2025
Department of Chemistry, IIT Kharagpur, Kharagpur, 721302, India.
The solid-solution alloys of Mn-Zn-Ga and Mn-Zn-Sn have been synthesized by a high-temperature method and structurally characterized by X-ray diffraction studies. The substitutional solid-solution alloys that crystallize in the chiral space group 432 or 432 adopt the A13-type structure (β-Mn). Similar to β-Mn, the 20 atoms in the cubic unit cell are distributed over 8 and 12 Wyckoff positions.
View Article and Find Full Text PDFPhilos Trans A Math Phys Eng Sci
September 2025
Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL, USA.
Bacterial motility is strongly influenced by confinement. Here, we derive an asymptotic solution for the flow about a microswimmer enclosed in a weakly deformable Hele-Shaw drop-a drop sandwiched between two solid planes. For a microswimmer modelled as a dipole, we explore the swimmer's trajectory, the evolution of the droplet interface and the drop velocity.
View Article and Find Full Text PDFBiophys J
September 2025
Laboratory for Multiscale Mechanics and Medical Science, State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an, 710049, China. Electronic address:
The mechanical properties of cells are crucial for elucidating various physiological and pathological processes. Cells are found to exhibit a universal power-law rheological behavior at low frequencies. While they behave in a different manner at high frequency regimes, which leaves the transition region largely unexplored.
View Article and Find Full Text PDFBiotechnol Bioeng
September 2025
GICOM Research Group, Department of Chemical, Biological and Environmental Engineering School of Engineering, Building Q Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain.
Amylases are key industrial enzymes, and thermostable variants are particularly valuable for robust bioprocessing. This study investigates amylase production via solid-state fermentation (SSF) using non-sterile potato peel as substrate, comparing the performance of the autochthonous microbial population with that of the inoculated fungus Thermomyces lanuginosus. Non-inoculated batch reactors reached maximum productivities of 3920 U g¹DM day¹, more than double of the inoculated ones (1823 U g¹DM day¹), highlighting the potential of native thermophiles.
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