Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Alloying-type anode materials provide high capacity for lithium-ion batteries; however, they suffer pulverization problems resulting from the volume change during cycling. Realizing the cycling reversibility of these anodes is therefore critical for sustaining their electrochemical performance. Here, we investigate the structural reversibility of Sn NPs during cycling at atomic-level resolution utilizing high-resolution TEM. We observed a surprisingly near-perfect structural reversibility after a complete cycle. A three-step phase transition happens during lithiation, accompanied by the generation of a significant number of defects, grain boundaries, and up to 202% volume expansion. In subsequent delithiation, the volume, morphology, and crystallinity of the Sn NPs were restored to their initial state. Theoretical calculations show that compressive stress drives the removal of vacancies generated within the NPs during delithiation, therefore maintaining their intact morphology. This work demonstrates that removing vacancies during cycling can efficiently improve the structural reversibility of high-capacity anode materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.4c01183 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Mechanisms and treatment of cancer therapy-induced peripheral and central neurotoxicity.
Nat Rev Cancer
September 2025
Department of Neurology, Division of Neuro-Oncology, Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, USA.
Neurotoxicity is a common and potentially severe adverse effect from conventional and novel cancer therapy. The mechanisms that underlie clinical symptoms of central and peripheral nervous system injury remain incompletely understood. For conventional cytotoxic chemotherapy or radiotherapy, direct toxicities to brain structures and neurovascular damage may result in myelin degradation and impaired neurogenesis, which eventually translates into delayed neurodegeneration accompanied by cognitive symptoms.
View Article and Find Full Text PDFDecoding the functional roles of multimetallic constituents in high-entropy prussian blue analogues for sodium-ion batteries.
J Colloid Interface Sci
August 2025
School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China. Electronic address:
Prussian blue analogues (PBAs) have emerged as promising cathode materials for sodium-ion batteries (SIBs) due to their low cost, simple preparation, and high theoretical specific capacity. The integration of high-entropy concepts with framework-structured PBAs has pioneered a new pathway for performance optimization in SIBs cathodes. However, most scholars have only studied the five elements constituting high entropy as a whole, while challenges such as the role of each element and optimization of the proportions among constituent elements remain unresolved.
View Article and Find Full Text PDFBidirectional Modulation of α-Glucosidase by Steroidal Saponins From Polygonatum kingianum var. grandifolium: Inhibitory and Activating Effects Align With the Yin-Yang Balance Theory.
Chem Biodivers
September 2025
Chongqing Key Laboratory of Development and Utilization of DaoDi Medicinal Materials in Three Gorges Reservoir Area, Chongqing Three Gorges Medical College, Chongqing, P. R. China.
Three new steroidal saponins, kingianoside L-N (1-3), whose structures were elucidated through comprehensive spectroscopic analysis, and 15 known compounds (4-18) were isolated from Polygonatum kingianum var. grandifolium, a source of the traditional antihyperglycemic medicine Polygonati rhizome. The effects of compounds 1-13 on α-glucosidase activity were evaluated in vitro.
View Article and Find Full Text PDFHeat-Induced Changes in the Chemical Structure, Hydrophobicity, and Size Distribution of Free/Bound Lipid Transfer Protein 1 and Their Effects on Beer Foam.
J Agric Food Chem
September 2025
Department of Biotechnology, Graduate School of Engineering, The University of Osaka, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
During brewing processes, proteins such as lipid transfer protein 1 (LTP1) are exposed to high temperatures, which later affects the beer foam properties. To develop high-quality beer, it is therefore essential to understand the protein chemical modifications and structural alternations induced by the high temperatures and their impact on beer foam. This study characterizes heat-induced chemical modifications and changes in the molecular size distribution and structure of LTP1 and its lipid-bound isoform, LTP1b, using size-exclusion chromatography and reverse-phase chromatography/mass spectrometry.
View Article and Find Full Text PDFToll-like receptor 4 induces trained innate immune tolerance in the heart in a model of stress-induced cardiomyopathy.
Cardiovasc Res
September 2025
Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University in Saint Louis, St. Louis, MO, USA.
Aims: Although the ability of the heart to adapt to environmental stress has been studied extensively, the molecular and cellular mechanisms responsible for cardioprotection are not yet fully understood. In this study, we sought to elucidate these mechanisms for cytoprotection using a model of stress-induced cardiomyopathy.
Methods And Results: We administered Toll-like receptor (TLR) agonists or diluent to wild-type mice and assessed for cardioprotection against injury from a high intraperitoneal dose of isoproterenol (ISO) administered 7 days later.