The sluggish layered structural sodium reaction kinetics and the easy restacking property are major obstacles hindering the practical application of MoS-based electrodes for sodium storage. Herein, covalently assembled two-phase MoS-SnS supported by a hierarchical graphitic carbon nitride/graphene (MoS-SnS@g-CN/G) composite is constructed to improve cycling cyclability and rate performances for Na storage. The multiphase MoS-SnS@g-CN/G is featured with a covalent assembly strategy and an interconnected network architecture. This unique structural design can not only enhance the conductivity and facilitate fast interfacial electron transport, which is confirmed by experiments and density functional theory, but also buffer the volumetric changes of MoS-SnS. As a result, the as-obtained MoS-SnS@g-CN/G anode delivers a high reversible capacity of 834 mA h g at 0.1 A g, a high rate capability of 452 mA h g at 5 A g, and a long-term cycling stability (320 mA h g at 2 A g with 54.7% retention after 500 cycles) for the Na half-cell. Coupling with activated carbon (AC), our MoS-SnS@g-CN/G||AC sodium-ion hybrid capacitor delivers high energy/power densities (193.1 W h kg/90 W kg and 41.5 W h kg/18,000 W kg) and a stable cycle life in the potential range of 0-4.0 V.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.1c07535 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Regulating Interphase Chemistry by Targeted Functionalization of Hard Carbon Anode in Ester-based Electrolytes for High-Performance Sodium-Ion Batteries.
Angew Chem Int Ed Engl
January 2025
Harbin Institute of Technology, School of Chemistry and Chemical Engineering, No. 92, West Dazhi Street, 150001, Harbin, CHINA.
Commercial hard carbon (HC) anode suffers from unexpected interphase chemistry rooted in the parasitic reactions between surface oxygen-functional groups and ester-based electrolytes. Herein, an innovative strategy is proposed to regulate interphase chemistry by tailoring targeted functional groups on the HC surface, where highly active undesirable oxygen-functional groups are skillfully converted into a Si-O-Si molecular layer favorable for anchoring anions. Then, an inorganic/organic hybrid solid electrolyte interphase with low interfacial charge transfer resistance and enhanced cycling durability is constructed successfully.
View Article and Find Full Text PDFHigh-Coordination and Nb-Bridging of Bimetallic Amorphous P-Nb-W-P Clusters in Carbon Nanospheres for High-Performance Sodium-Ion Hybrid Capacitors.
Adv Sci (Weinh)
January 2025
Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, Jiangxi, 330063, P. R. China.
Amorphous clusters are gaining prominence as prospective hosts for sodium-ion hybrid capacitors (SIHCs), but their efficacy is still affected by atomic coordination. Optimization of ion storage and charge transport can be achieved through high coordination and bimetallic configurations. Herein, high-coordination amorphous P-Nb-W-P (Nb/W-P) clusters are skillfully tailored by bridging Nb into the second shell of W in the W-P configuration, nested in situ in conductive and stable N, P co-doped carbon nanospheres (Nb/W-P@NPC).
View Article and Find Full Text PDFUltrafast Synthesis of Hard Carbon Anodes for Sodium-ion Batteries: An Intense-Pulsed-Light-Assisted Approach to Photothermal Carbonization of Polymer/Carbon Nanotube Composite Films.
Small Methods
January 2025
Nano Hybrid Technology Research Center, Electrical Materials Research Division, Korea Electrotechnology Research Institute (KERI), Changwon, 51543, Republic of Korea.
The conventional carbonization process for synthesizing hard carbons (HCs) requires high-temperature furnace operations exceeding 1000 °C, leading to excessive energy consumption and lengthy processing times, which necessitates the exploration of more efficient synthesis methods. This study demonstrates the rapid preparation of HC anodes using intense pulsed light (IPL)-assisted photothermal carbonization without the prolonged and complex operations typical of traditional carbonization methods. A composite film of microcrystalline cellulose (MCC) and single-walled carbon nanotubes (SWCNTs) is carbonized at high temperatures in less than 1 min.
View Article and Find Full Text PDFEffect of pre-treatment conditions on the electrochemical performance of hard carbon derived from bio-waste.
RSC Adv
January 2025
Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University Astana Kazakhstan
Sodium-ion batteries (SIBs) offer several advantages over traditional lithium-ion batteries, including a more uniform sodium distribution, lower-cost materials, and safer transportation options. A promising development in SIBs is the use of hard carbons as anode materials due to their low insertion voltage and larger interlayer spacing, which improve sodium-ion insertion. Traditionally, hard carbons are made from costly carbon sources, but recent advancements have focussed on using abundant bio-waste, like coffee grounds.
View Article and Find Full Text PDFA new 3D metallic, ductile, and porous boron nitride as a promising anode material for sodium-ion batteries.
Phys Chem Chem Phys
January 2025
Department of Physics, Institute for Sustainable Energy and Environment, Virginia Commonwealth University, Richmond, VA, 23284, USA.
We propose a new stable three-dimensional (3D) porous and metallic boron nitride anode material, named h-BN, with good ductility for sodium-ion batteries (SIBs). Based on first-principles calculations and a tight-binding model, we demonstrate that the metallicity originates from the synergistic contribution of the p-orbital of the sp-hybridized B and N atoms, while the ductility is due to the unique configurations of B-B and N-N dimers in the structure. More importantly, this boron nitride allotrope exhibits a high reversible capacity of 582.
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!