A5050328476- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Semiconductor materials and devices
- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Graphene research and applications
- Thermal Expansion and Ionic Conductivity
- Fuel Cells and Related Materials
- Conducting polymers and applications
- Membrane-based Ion Separation Techniques
- Chemical Synthesis and Reactions
- Polyoxometalates: Synthesis and Applications
- Extraction and Separation Processes
University of Wisconsin–Milwaukee
2016-2025
Applied Science Private University
2017
This study reports an ambient-air-tolerant approach for negative electrode prelithiation by using 1 M lithium-biphenyl (Li-Bp)/tetrahydrofuran (THF) solution as the reagent. Key to this strategy are relatively stable nature of Li-Bp/THF in ambient air and unique electrochemical behavior Bp ether carbonate solvents. With its low redox potential 0.41 V vs Li/Li+, Li-Bp can prelithiate various active materials with high efficacy. The successful a phosphrous/carbon composite notable improvement...
Hard carbon has been extensively investigated as anode materials for high-energy lithium-ion batteries owing to its high capacity, long cycle life, good rate capability, and low cost of production. However, it suffers from a large irreversible capacity thus initial coulombic efficiency (ICE), which hinders commercial use. Here, we developed fast controllable prelithiation method based on chemical reaction using lithium-containing reagent (1 M lithium biphenylide dissolved in...
Abstract Rechargeable lithium–sulfur batteries have aroused great attention in recent years. Thousands of research articles are published, and among these publications, the majority dedicated to improving battery's performance through chemically physically modifying sulfur electrode, electrolytes, separator, lithium anode. However, single most important aspect, understanding redox mechanism, is sparse overwhelmed by huge volume work done on performance. Besides intrinsic complexity...
For the first time, protected metallic Li is employed as anode in halide-based all-solid-state batteries. A kinetically stable interface realized by inserting an argyrodite interlayer between halide electrolyte and lithium metal.
The mechanism of the sulfur cathode in Li–S batteries has been proposed. It was revealed by real-time quantitative determination polysulfide species and elemental means high-performance liquid chromatography course discharge recharge a battery. A three-step reduction including two chemical equilibrium reactions proposed for discharge. typical two-plateau curve can be explained. two-step oxidation Li2S Li2S2 with single among soluble ions S52–, S62–, S72–, S82– throughout entire process...
A long cycle-life Li-S battery (both the coin cell and pouch cell) is reported with minimum shuttle effect. The performance was achieved a bifunctional carbon material three unique features. can catalyze disproportionation of dissolved long-chain polysulfide ions to elemental sulfur; ensure homogeneous precipitation Li sulfide on host carbon, has honeycomb porous structure, which store sulfur better. All features are demonstrated experimentally in this paper. Few polysulfides found by...
The conventional formation process of sodium‐ion batteries (SIBs), which relies on low‐current cycling, is one the most energy‐intensive and time‐consuming steps in battery production, significantly contributing to overall manufacturing costs. This study systematically evaluates SIB pouch cells under different protocols demonstrates that high‐rate can achieve superior electrochemical performance. Our optimized reduces time by 52.3% compared method, presenting a cost‐effective efficient...
The main bottlenecks for the application of polymer electrolyte fuel cells in electric vehicles are high cost and inferior performance Nafion at temperatures above 80 °C. In this work, composite membranes made by infiltrating various PTFE fibrous substrates were prepared, characterized, assessed a single cell performance. Prepared simple dip-coating method, membrane exhibited satisfactory mechanical strength thermal stability with incorporation backbone, which can suppress swelling...
This study explores the improvement of sodium-ion batteries by presodiating hard carbon anodes, with goal reducing initial capacity loss and enhancing overall electrochemical performance full cells. Using Na-biphenyl for presodiation exploring its effects under various conditions—such as electrolyte composition electrode loading—alongside two different cathode configurations (Na-stoichiometry Na 3 V 2 (PO 4 ) Na-deficient 0.44 MnO ), we seek to elevate batteries. Our findings reveal...
A thioether-substituted diaminocyclopropenium (TDAC) cation is developed as a redox shuttle additive for safer high energy density Li-ion batteries.
Given that both elemental sulfur (S8) and lithium sulfide (Li2S) exhibit insulating properties, the involvement of conductive host materials becomes crucial for facilitating charge transfer in cathodes within lithium–sulfur (Li–S) batteries. Furthermore, there has been a recent surge exploration to address "polysulfide shuttle" effect. This effect arises from formation polysulfide species during charge–discharge cycles Li–S batteries can be mitigated through physical or chemical interactions...
Silicon has emerged as a potential anode material for lithium-ion batteries due to its high theoretical capacity of 3579 mAh g −1 (Li 3.75 Si). However, the alloy reaction with lithium content presents challenges, such significant volumetric expansion and an unstable solid electrolyte interphase layer, which are detrimental electrodes lead rapid fade [1]. Siloxene, silicon compound layered structure, attracted attention in battery applications small volume change moderate [2, 3]. This is...
Lithium-sulfur (Li-S) batteries are regarded one of the promising alternatives conventional lithium-ion (Li-ion) because its high theoretical energy density (2600 Wh kg -1 ), abundance resources on earth, and low cost sulfur. Nevertheless, several significant challenges persist in practical application Li-S batteries, with most urgent being dissolved shuttle effect long-chain lithium polysulfide (LiPS) species during cycling [1]. Using porous host material for sulfur cathode is commonly...