A5073185202- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- Advanced battery technologies research
- Conducting polymers and applications
- Thermal Expansion and Ionic Conductivity
- MXene and MAX Phase Materials
- Graphene research and applications
- Transition Metal Oxide Nanomaterials
- Inorganic Fluorides and Related Compounds
- Electromagnetic wave absorption materials
- Fuel Cells and Related Materials
- Adsorption and Cooling Systems
- Chemical Synthesis and Characterization
- Microwave Dielectric Ceramics Synthesis
- Semiconductor materials and devices
- Catalysis and Hydrodesulfurization Studies
- Geotechnical Engineering and Underground Structures
- Carbon Dioxide Capture Technologies
- Electrocatalysts for Energy Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Geotechnical Engineering and Analysis
- Perovskite Materials and Applications
Xiangtan University
2016-2025
Battery Park
2019
The practical progress of lithium–sulfur batteries is hindered by the serious shuttle effect and slow oxidation–reduction kinetics polysulfides. Herein, ZnFe2O4–Ni5P4 Mott–Schottky heterojunction material prepared to address these issues. Benefitting from a self-generated built-in electric field, as an efficient bidirectional catalysis regulates charge distribution at interface accelerates electron transfer. Meanwhile, synergy strong adsorption capacity derived metal oxides outstanding...
Abstract The serious shuttle effect and intrinsically sluggish oxidation–reduction reaction kinetics of polysulfides severely hinder the practical commercialization lithium–sulfur (Li–S) batteries. Herein, oxygen‐defect‐rich WO 3− x –W 3 N 4 Mott–Schottky heterojunctions are designed as efficient catalysts. Based on theoretical calculations comprehensive experimental characterization, exhibits a lower free energy change (1.03 eV) Li 2 S decomposition barrier (0.92 than W , which...
Anchored polyanionic species acting as micro funnels boost the Li + kinetics and enhance structural stability of high-voltage LiCoO 2 .
Abstract Li‐rich–layered oxide is considered to be one of the most promising cathode materials for high‐energy lithium ion batteries. However, it suffers from poor rate capability, capacity loss, and voltage decay upon cycling that limits its utilization in practical applications. Surface properties play a critical role function Herein, novel successful strategy synchronous tailoring surface structure chemical composition proposed. Poor nickel content on carbonate precursor initially...
Lithium-rich layered materials, Li1+xM1−xO2 (M = Mn, Ni, Co), have been under intense investigation as high-performance cathode materials for lithium ion batteries due to their high discharge capacity, low cost and environmental benignity. Unfortunately, the practical uses of these oxides so far hindered by severe capacity voltage fading during cycling (>4.5 V vs. Li/Li+). In an attempt overcome problems, herein, a novel lithium-rich Li1.14[Mn0.60Ni0.25Co0.15]0.86O2 microsphere with...
Fe1−xCoxF3 (x = 0, 0.03, 0.05, 0.07) compounds are synthesized via a liquid-phase method. To further improve their electrochemical properties, ball milling process with acetylene black (AB) has been used to form Fe1−xCoxF3/C nanocomposites. The structure and performance of the samples have characterized by X-ray diffraction (XRD), photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission (HRTEM), energy dispersive (EDX), charge–discharge tests, cyclic...
The commercialization of lithium-sulfur (Li-S) batteries is greatly hindered due to serious capacity fading caused by the polysulfide shuttling effect. Optimizing structural configuration, enhancing reaction kinetics sulfur cathode, and increasing areal loading are great significance for promoting commercial applications Li-S batteries. Herein, multifunctional scavengers based on nitrogen, co-doped carbon cloth (DCC), which supported flower-like MoS2 (1T-2H) decorated with BaMn0.9 Mg0.1 O3...
Sluggish kinetics of polysulfide redox reaction give rise to poor electrochemical properties for lithium–sulfur (Li–S) batteries. Electrocatalysts are introduced decrease activation energy and effectively accelerate the dynamics conversion. In this study, we propose a rational strategy tuning d-band catalysts via delivering Fe into Ni2P in situ grown on rGO construct NiFeP/rGO composites. Based first-principles density functional theory calculation, metallic conduction could be improved by...
Porous hollow α-Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> core–shell nanospheres with inner cavity and porous outer shell exhibit outstanding electrochemical properties for LIBs/SIBs.
Li-rich layered oxides (LLOs) with high specific capacities are favorable cathode materials high-energy density. Unfortunately, the drawbacks of LLOs such as oxygen release, low conductivity, and depressed kinetics for lithium ion transport during cycling can affect safety rate capability. Moreover, they suffer severe capacity voltage fading, which major challenges commercializing development. To cure these issues, herein, synthesis high-performance antimony-doped LLO nanofibers by an...