Although the lithium-sulfur battery exhibits high capacity and energy density, the cycling performance is severely retarded by dendrite formation and side-reactions of the lithium metal anode and the shuttle effect of polysulfides. Therefore, exploring lithium rich-alloy (or compound) anodes and suppressing the shuttling of polysulfides have become practical technical challenges for the commercialization of lithium-sulfur batteries. Here, a lithium ion sulfur full battery system combining a lithium-rich Li-Si alloy anode and sulfurized polyacrylonitrile (S@pPAN) cathode has been proposed. The free-standing CNF matrix supported Li-Si alloy anode is prepared by a simple and effective method, which is practical for scale-up production. The obtained Li-Si alloy anode demonstrates high cycling stability without dendrite growth, while the use of the S@pPAN cathode avoids the shuttle effect in carbonate electrolytes. The constructed Li-Si/S@pPAN battery could be cycled more than 1000 times at 1C and 3000 times at 3C, with a capacity fading rate of 0.01% and 0.03% per cycle. The exceptional performance should originate from the stable integrated anode structure and the excellent compatibility of the S@pPAN cathode and Li-Si alloy anode with carbonate electrolytes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6296295 | PMC |
| http://dx.doi.org/10.1039/c8sc02897d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Whisker-free lithium electrodeposition by tuning electrode microstructure.
Phys Chem Chem Phys
January 2025
N.N. Semenov Federal Research Center for Chemical Physics, Kosygina str 4, Moscow 119991, Russia.
Growth of lithium whiskers or dendrites is the major obstacle towards safe and stable utilization of lithium metal anodes in rechargeable batteries. In this study, we look deeper into the mechanism of lithium electrodeposition. We find that before lithium whisker or dendrite nucleation occurs, lithium is deposited into the grain boundaries of the metal electrode, which we directly observed in the focused ion beam cross-sections of the lithium electrode.
View Article and Find Full Text PDFActivating discharge and inhibiting self-corrosion by adding indium to the anode of Mg-air battery.
Nanoscale
January 2025
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China.
Self-corrosion and low practical voltage of anodes severely limit the usage of Mg-air batteries. Although many elements, including indium (In), have been used to enhance the discharge characteristics of Mg anodes, unclear mechanism of the action of a single element and lack of research on binary alloys as anodes have restricted the development of Mg-air batteries. Herein, Mg-In ( = 0.
View Article and Find Full Text PDFThe effects of anodization and instrumentation on titanium abutment surface characteristics and biofilm formation.
J Prosthodont
January 2025
Department of Prosthodontics, Indiana University School of Dentistry, Indianapolis, Indiana, USA.
Purpose: To assess the impact of anodization and instrumentation on titanium abutment surface characteristics (surface roughness and wettability) and biofilm formation (viability and mass).
Materials And Methods: Titanium discs were obtained from pre-milled abutment blanks made of titanium-6aluminum-7niobium alloy. Polished samples were divided into three groups: un-anodized, gold-anodized, and pink-anodized.
Mechanically Robust Bismuth-Embedded Carbon Microspheres for Ultrafast Charging and Ultrastable Sodium-Ion Batteries.
J Am Chem Soc
January 2025
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Materials, Xiamen University, Xiamen 361005, China.
Advancements in the development of fast-charging and long-lasting microstructured alloying anodes with high volumetric capacities are essential for enhancing the operational efficiency of sodium-ion batteries (SIBs). These anodes, however, face challenges such as declined cyclability and rate capability, primarily due to mechanical degradation reduced by significant volumetric changes (over 252%) and slow kinetics of sodium-ion storage. Herein, we introduce a novel anode design featuring densely packed bismuth (Bi) embedded within highly conductive carbon microspheres to overcome the aforementioned challenges.
View Article and Find Full Text PDFUnraveling the conversion mechanism toward spinel sulfides as cathode materials for Mg-ion batteries.
Phys Chem Chem Phys
January 2025
National Engineering Research Centre for Mg Alloys, Chongqing University, Chongqing 400044, PR China.
Rechargeable Mg batteries are promising candidates for achieving considerable high-energy-density. Enhancing the energy density can be achieved by integrating metallic Mg anodes with conversion-type cathode materials, which are characterized by multi-electron transfer process and elevated specific capacities in contrast to intercalation-type materials. Despite these advantages, the conversion-type cathodes still have some challenges of substantial volume expansion, sluggish diffusion kinetics and intricate mesophase evolution during repeated electrochemical reactions.
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!