High energy density lithium metal batteries (LMBs) are promising next-generation energy storage devices. However, the uncontrollable dendrite growth and huge volume change limit their practical applications. Here, a new Mg doped Li-LiB alloy with in situ formed lithiophilic 3D LiB skeleton (hereinafter called Li-B-Mg composite) is presented to suppress Li dendrite and mitigate volume change. The LiB skeleton exhibits superior lithiophilic and conductive characteristics, which contributes to the reduction of the local current density and homogenization of incoming Li flux. With the introduction of Mg, the composite achieves an ultralong lithium deposition/dissolution lifespan (500 h, at 0.5 mA cm) without short circuit in the symmetrical battery. In addition, the electrochemical performance is superior in full batteries assembled with LiCoO cathode and the manufactured composite. The currently proposed 3D Li-B-Mg composite anode may significantly propel the advancement of LMB technology from laboratory research to industrial commercialization.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7080552 | PMC |
| http://dx.doi.org/10.1002/advs.201902643 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Adaptive or non-adaptive? Cranial evolution in a radiation of miniaturized day geckos.
BMC Ecol Evol
December 2024
Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, 800 Lancaster Avenue, Villanova, PA, 19085, USA.
Lygodactylus geckos represent a well-documented radiation of miniaturized lizards with diverse life-history traits that are widely distributed in Africa, Madagascar, and South America. The group has diversified into numerous species with high levels of morphological similarity. The evolutionary processes underlying such diversification remain enigmatic, because species live in different ecological biomes, ecoregions and microhabitats, while suggesting strikingly high levels of homoplasy.
View Article and Find Full Text PDFCell quantification at the osteochondral interface from synchrotron radiation phase contrast micro-computed tomography images using a deep learning approach.
Sci Rep
November 2024
Paris Cité University CNRS INSERM, B3OA, UMR 7052, U 1271, 10 avenue de Verdun, Paris, 75010, France.
Article Synopsis
- The study focuses on the osteochondral interface, which includes calcified cartilage (CC) and subchondral bone (SCB), and presents a new method for analyzing chondrocyte and osteocyte lacunae in human knee samples using advanced imaging techniques.
- Researchers employed a combination of a marker-controlled watershed algorithm and deep learning (specifically nnU-Net) to enhance the 3D segmentation of cell lacunae, effectively improving the assessment of their structures.
- Findings showed that while chondrocyte characteristics didn't differ significantly between control and osteoarthritic knees, osteocytes in the osteoarthritic group exhibited lower anisotropy and tended to be more spherical,
Stabilizing Lithium Metal Anodes by Fiber Clustering.
Inorg Chem
December 2024
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China.
Lithium metal anodes generally suffer from uncontrolled dendrite growth and large volume change, while traditional skeletons such as LiIn and LiSn are too heavy and discontinuous to offer highly efficient structural supportability for composite Li anodes. In this work, lightweight and stable fiber-clustered skeletons, which are composed of LiB fibers and jointed LiSi nanoparticles, can be obtained by smelting SiB powder and Li ingots. In addition to serving as both ionic and electronic conductors for composite Li anodes, the stable skeletons reduced volumetric fluctuation by offering uniform, heterogeneous, and continuous architectures while suppressing lithium dendrites with low nucleation overpotential and diffusion energy barrier.
View Article and Find Full Text PDFElectrochemical Performance of MoB/SiN Heterojunction as a Potential Anode Material for Li Ion Batteries.
ACS Appl Mater Interfaces
November 2024
State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
In response to the current policy of high storage capacity, two-dimensional (2D) materials have revealed promising prospects as high-performance electrode materials. MoB, as a type of such material, is widely regarded as an anode candidate for Li-ion batteries due to its large specific surface area and abundant ion diffusion channels; the long-term cycling stability, however, is poor owing to material pulverization during the cycle. Therefore, MoB/SiN heterojunction in this work is proposed as an anode material, with SiN acting as a skeleton, maintaining the stability of the structure, while retaining the high energy storage properties of MoB as well.
View Article and Find Full Text PDFFacile In Situ Building of Sulfonated SiO Coating on Porous Skeletons of Lithium-Ion Battery Separators.
Polymers (Basel)
September 2024
State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu 610065, China.
Polyolefin separators with worse porous structures and compatibilities mismatch the internal environment and deteriorate lithium-ion battery (LIB) combination properties. In this study, a sulfonated SiO (SSD) composited polypropylene separator (PP@SSD) is prepared to homogenize pore sizes and in situ-built SSD coatings on porous skeletons. Imported SSD uniformizes pore sizes owing to centralized interface distributions within casting films.
View Article and Find Full Text PDFWant 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!