Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The separator is an important component in lithium-sulfur (Li-S) batteries. However, the conventional polypropylene (PP) separators have the problem of easy shuttling of lithium polysulfide (LiPSs). Herein, ultrathin magnesium boride (MgB) nanosheets were prepared by ultrasonic-assisted exfoliation technology, and were suction-filtered onto a separator to serve as a separator modification layer. The introduction of a microporous structure into MgB nanosheets after ultrasonic peeling increases the specific surface area and pore volume, with more adsorption sites, which can fully utilize the surface adsorption/catalytic performance of MgB for LiPSs and accommodate the volume expansion of lithium sulfide (LiS). Therefore, MgB@PP as a separator significantly improves the sulfur utilization and cycle stability in Li-S batteries. When the MgB@PP separator is used, the reversible specific capacity of the assembled Li-S battery at 0.1 C (current rate) is 1184 mAh/g, and the specific capacity at 2 C is 732 mAh/g. After 500 cycles at 2 C, it remains at 497 mAh/g.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2023.08.193 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-entropy metal phosphide nanoparticles for accelerated lithium polysulfide conversion.
Chem Sci
September 2025
School of Resources, Environment and Materials, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University Nanning 530004 P. R. China
To overcome the persistent challenges of sluggish lithium polysulfide (LiPS) conversion kinetics and the shuttle effect in Li-S batteries, this work introduces a novel, cost-effective thermal treatment strategy for synthesizing high-entropy metal phosphide catalysts using cation-bonded phosphate resins. For the first time, we successfully fabricated single-phase high-entropy FeCoNiCuMnP nanoparticles anchored on a porous carbon network (HEP/C). HEP/C demonstrates enhanced electronic conductivity and superior LiPS adsorption capability, substantially accelerating its redox kinetics.
View Article and Find Full Text PDFSynergistic Ni-Co Metal Nodes in a Conjugated MOF-Modified Separator for High-Performance Lithium-Sulfur Batteries.
Adv Sci (Weinh)
September 2025
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225009, P. R. China.
Lithium-sulfur batteries (LSBs) hold great potential as next-generation energy storage systems due to their high theoretical energy density and relatively low cost. However, their practical application is hindered by issues such as the shuttle phenomenon caused by soluble lithium polysulfides (LiPSs), slow redox reaction rates, and unsatisfactory cycling stability. In this study, novel conjugated metal-organic frameworks, MM″(HHTP) (M, M″ = Ni, Co, Cu) is reported, as a functional coating on polypropylene (PP) separators.
View Article and Find Full Text PDFUltrathin Amorphous Boron Nitride Films and Their Functional Integration in Lithium Metal Anodes.
Nano Lett
September 2025
Center for 2D Quantum Heterostructures, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea.
Ultrathin amorphous materials are promising counterparts to 2D crystalline materials, yet their properties and functionalities remain poorly understood. Amorphous boron nitride (aBN) has attracted attention for its ultralow dielectric constant and superior manufacturability compared with hexagonal boron nitride. Here, we demonstrate wafer-scale growth of ultrathin aBN films with exceptional thickness and composition uniformity using capacitively coupled plasma-chemical vapor deposition (CCP-CVD) at 400 °C.
View Article and Find Full Text PDFA solid-state battery capable of 180 C superfast charging and 100% energy retention at -30 °C.
Proc Natl Acad Sci U S A
September 2025
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China.
Solid-state electrolytes (SSEs) are being extensively researched as replacements for liquid electrolytes in future batteries. Despite significant advancements, there are still challenges in using SSEs, particularly in extreme conditions. This study presents a hydrated metal-organic ionic cocrystal (HMIC) solid-state ion conductor with a solvent-assisted ion transport mechanism suitable for extreme operating conditions.
View Article and Find Full Text PDFUltrathin Amorphous Iron Oxide Nanosheets for Improving the Electrochemical Performance of Li-S Batteries.
Langmuir
September 2025
Key Laboratory of Functional Molecular Solids (Ministry of Education), College of Chemistry and Materials Science, Anhui Key Laboratory of Biomedical Materials and Chemical Measurement, Anhui Normal University, Wuhu 241000, China.
The sluggish kinetics and diffusion of lithium polysulfide (LiPS) intermediates lead to the decline in the capacity and rate of high-energy lithium-sulfur (Li-S) batteries. Integrating adsorbents and electrocatalysts into the Li-S system is an effective strategy for suppressing the polysulfide shuttle and enhancing the redox kinetics of sulfur species. The disordered structure of the electrocatalysts exhibits significantly enhanced catalytic activity.
View Article and Find Full Text PDF