In this work, the electrochemical and discharge properties of Mg-Zn-Sr ( = 0, 0.2, 0.5, 1, 2, and 4 wt.%) alloys used as anodes for Mg-air batteries were systematically studied via microstructure characterization, electrochemical techniques, and Mg-air battery test methods. The addition of Sr refines the grain size, changes the composition and morphology of the passivation film and discharge products, and enhances the electrochemical properties of the alloy. Excessive Sr addition breaks the grain boundaries and precipitates a large number of Sr-rich phases, resulting in microgalvanic corrosion and the 'chunk effect'. The anode efficiency of Mg-Zn-1Sr is the highest at a current density of 10 mA cm, reaching 61.86%, and the energy density is 2019 mW h g. Therefore, Sr is a microalloying element that can optimize the electrochemical performance of Mg-air battery alloy anodes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11396373 | PMC |
| http://dx.doi.org/10.3390/ma17174179 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Impact of plasma discharge pressure on implant surface properties and osteoblast activities in vacuum-assisted plasma treatment.
Sci Rep
December 2024
Department of Mechanical Engineering, Sejong University, Seoul, Republic of Korea.
Nonthermal plasma has been extensively utilized in various biomedical fields, including surface engineering of medical implants to enhance their biocompatibility and osseointegration. To ensure robustness and cost effectiveness for commercial viability, stable and effective plasma is required, which can be achieved by reducing gas pressure in a controlled volume. Here, we explored the impact of reduced gas pressure on plasma properties, surface characteristics of plasma-treated implants, and subsequent biological outcomes.
View Article and Find Full Text PDFOperando real-space imaging of a structural phase transformation in the high-voltage electrode LiNiMnO.
Nat Commun
December 2024
Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA.
Discontinuous solid-solid phase transformations play a pivotal role in determining the properties of rechargeable battery electrodes. By leveraging operando Bragg Coherent Diffractive Imaging (BCDI), we investigate the discontinuous phase transformation in LiNiMnO within an operational Li metal coin cell. Throughout Li-intercalation, we directly observe the nucleation and growth of the Li-rich phase within the initially charged Li-poor phase in a 500 nm particle.
View Article and Find Full Text PDFRedox-active Co(II) and Zn(II) Pincer Complexes as High-Capacity Anode Materials for Lithium-Ion Batteries.
Adv Sci (Weinh)
December 2024
Department of Chemistry and Research Institute of Molecular Alchemy, Gyeongsang National University, Jinju, 52828, South Korea.
To address the ongoing demand for high-performance energy storage devices, it is crucial to identify new electrode materials. Lithium-ion batteries (LIBs) store energy via the electrochemical redox process, so their electrode materials should have reversible redox properties for rechargeability. On that note, redox-active metal complexes are explored as innovative electrode materials for LIBs.
View Article and Find Full Text PDFBiopolymer chitosan-capped yttrium and cobalt dual-doped SnO as an advanced biodegradable photocatalyst for efficient organic pollutant degradation.
Int J Biol Macromol
December 2024
Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea. Electronic address:
The improper handling and uncontrolled discharge of toxic organic dyes result in significant adverse effects on both human health and the environment. This study investigates the fabrication of SnO₂, yttrium and cobalt dual-doped SnO₂ (YCSn), chitosan-capped SnO₂ (CS*Sn), and chitosan-capped yttrium and cobalt dual-doped SnO₂ (CS*YCSn) nanoparticles using a one-step coprecipitation method for the photocatalytic degradation of methylene blue (MB) under visible light irradiation. Characterization techniques including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM), and ultraviolet-visible (UV-Vis) spectrophotometry confirm the successful synthesis of biodegradable CS*YCSn nanoparticles.
View Article and Find Full Text PDFA Remote Management-Centric Post-Discharge Pathway for Patients Admitted to GIM with Heart Failure.
Am J Med
December 2024
Department of Medicine, University of Toronto, Toronto, ON, Canada; HoPingKong Centre for Excellence in Education and Practice, University Health Network, Toronto, ON, Canada; Division of General Internal Medicine and Geriatrics, University Health Network, Toronto, ON, Canada.
Background: Few GIM-specific heart failure transition of care (TOC) programs exist. We thus piloted a TOC program for heart failure patients discharged from GIM that incorporates a remote patient management program, Medly.
Methods: This single-centre, prospective proof-of-concept study described sociodemographic and medical characteristics of included patients, and computed summary statistics to describe clinical and workload outcomes.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!