A5071678608- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Block Copolymer Self-Assembly
- Advanced Battery Technologies Research
- Material Dynamics and Properties
- Rheology and Fluid Dynamics Studies
- Electrostatics and Colloid Interactions
- Theoretical and Computational Physics
- Conducting polymers and applications
- Advanced Polymer Synthesis and Characterization
- Surfactants and Colloidal Systems
- Polymer crystallization and properties
- Polymer Surface Interaction Studies
- Nanoparticle-Based Drug Delivery
- Force Microscopy Techniques and Applications
- Characterization and Applications of Magnetic Nanoparticles
- Advanced battery technologies research
- Organic Electronics and Photovoltaics
- Machine Learning in Materials Science
- Advanced Sensor and Energy Harvesting Materials
- Quantum Dots Synthesis And Properties
- Membrane Separation Technologies
- Polymer composites and self-healing
- Gold and Silver Nanoparticles Synthesis and Applications
- Fuel Cells and Related Materials
Stanford University
2016-2025
Hunan Agricultural University
2025
Qingdao University of Science and Technology
2025
Qingdao University of Technology
2025
Yantai University
2025
Taiyuan University of Technology
2025
South China Normal University
2025
Xi'an University of Technology
2019-2024
China Southern Power Grid (China)
2024
Institute of Research of Iron and Steel Shasteel
2024
1,2-Dimethoxyethane (DME) is a common electrolyte solvent for lithium metal batteries. Various DME-based designs have improved long-term cyclability of high-voltage full cells. However, insufficient Coulombic efficiency at the Li anode and poor stability remain challenge DME electrolytes. Here, we report molecular design principle that utilizes steric hindrance effect to tune solvation structures Li+ ions. We hypothesized by substituting methoxy groups on with larger-sized ethoxy groups,...
Increasing battery energy density is greatly desired for applications such as portable electronics and transportation. However, many next-generation batteries are limited by electrolyte selection because high ionic conductivity poor electrochemical stability typically observed in most electrolytes. For example, ether-based electrolytes have but oxidatively unstable above 4 V, which prevents the use of high-voltage cathodes that promise higher densities. In contrast, hydrofluoroethers (HFEs)...
Polyelectrolyte complexes present new opportunities for self-assembled soft matter. Factors determining whether the phase of complex is solid or liquid remain unclear. Ionic polypeptides enable examination effects stereochemistry on formation. Here we demonstrate that chirality determines state polyelectrolyte complexes, formed from mixing dilute solutions oppositely charged polypeptides, via a combination electrostatic and hydrogen-bonding interactions. Fluid occur when at least one in...
Abstract Solid polymer electrolytes (SPEs) promise to improve the safety and performance of lithium ion batteries (LIBs). However, low ionic conductivity transference number conventional poly(ethylene oxide) (PEO)‐based SPEs preclude their widespread implementation. Herein, crosslinked poly(tetrahydrofuran) (xPTHF) is introduced as a promising matrix for “beyond PEO” SPEs. The crosslinking procedure creates thermally stable, mechanically robust membranes use in LIBs. Molecular dynamics...
Abstract Novel electrolyte designs to further enhance the lithium (Li) metal battery cyclability are highly desirable. Here, fluorinated 1,6‐dimethoxyhexane (FDMH) is designed and synthesized as solvent molecule promote stability with its prolonged –CF 2 – backbone. Meanwhile, 1,2‐dimethoxyethane used a co‐solvent enable higher ionic conductivity much reduced interfacial resistance. Combining dual‐solvent system 1 m bis(fluorosulfonyl)imide (LiFSI), high Li‐metal Coulombic efficiency (99.5%)...
Self-consistent field theory (SCFT) is a powerful tool for the design and interpretation of experiments on block polymer materials. In this Perspective, we lower barrier to entry use SCFT by experimental groups two means. First, present pedagogical introduction an improved version open-source Polymer Self-Consistent Field (PSCF) software package underlying theory. Second, discuss methods generating robust initial guesses fields that are computed in SCFT. To demonstrate our approach, case...
Reaction heterogeneity was discovered as a main reason for Li–S pouch cell degradation at practical high energy.
The electrolyte plays a critical role in lithium-ion batteries, as it impacts almost every facet of battery's performance. However, our understanding the electrolyte, especially solvation Li+, lags behind its significance. In this work, we introduce potentiometric technique to probe relative energy Li+ battery electrolytes. By measuring open circuit potential cell with symmetric electrodes and asymmetric electrolytes, quantitatively characterize effects concentration, anions, solvents on...
Fully understanding the mechanism of lithium metal deposition is critical for development rechargeable battery anodes. The heterogeneous electron transfer kinetics are an important aspect electrodeposition, but they have been difficult to measure and understand. Here, we use transient voltammetry with ultramicroelectrodes explicitly investigate electrodeposition. results deviate from Butler–Volmer model electrode kinetics; instead, a Marcus accurately describes transfer. Measuring in series...
Inorganic-rich solid-electrolyte interphases (SEIs) on Li metal anodes improve the electrochemical performance of batteries (LMBs). Therefore, a fundamental understanding roles played by essential inorganic compounds in SEIs is critical to realizing and developing high-performance LMBs. Among prevalent SEI observed for anodes, Li3N often found Herein, we elucidate new features utilizing suspension electrolyte design that contributes improved anode. Through empirical computational studies,...
Abstract Next-generation wearable electronics require enhanced mechanical robustness and device complexity. Besides previously reported softness stretchability, desired merits for practical use include elasticity, solvent resistance, facile patternability high charge carrier mobility. Here, we show a molecular design concept that simultaneously achieves all these targeted properties in both polymeric semiconductors dielectrics, without compromising electrical performance. This is enabled by...
Abstract Physical networks typically employ enthalpy-dominated crosslinking interactions that become more dynamic at elevated temperatures, leading to network softening. Moreover, standard mathematical frameworks such as time-temperature superposition assume softening and faster dynamics temperatures. Yet, deriving a framework connecting the thermodynamics temperature-dependent viscoelasticity of physical suggests possibility for entropy-driven provide alternative temperature dependencies....
Self-healing soft electronic and robotic devices can, like human skin, recover autonomously from damage. While current use a single type of dynamic polymer for all functional layers to ensure strong interlayer adhesion, this approach requires manual layer alignment. In study, we used two polymers, which have immiscible backbones but identical bonds, maintain adhesion while enabling autonomous realignment during healing. These polymers exhibit weakly interpenetrating adhesive interface, whose...
Improving Coulombic efficiency (CE) is key to the adoption of high energy density lithium metal batteries. Liquid electrolyte engineering has emerged as a promising strategy for improving CE batteries, but its complexity renders performance prediction and design electrolytes challenging. Here, we develop machine learning (ML) models that assist accelerate high-performance electrolytes. Using elemental composition features our models, apply linear regression, random forest, bagging identify...
The rechargeability of lithium metal batteries strongly depends on the electrolyte. uniformity electroplated Li anode morphology underlies this dependence, so understanding main drivers uniform plating is critical for further electrolyte discovery. Here, we correlate electroplating kinetics with cyclability across several classes electrolytes to reveal mechanistic influence have morphology. Fast charge-transfer at fresh Li–electrolyte interfaces well and cyclability, whereas resistance Li+...