A5101546959- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Biosensors and Analytical Detection
- Electrocatalysts for Energy Conversion
- Microfluidic and Bio-sensing Technologies
- Digital Transformation in Industry
- Nuclear and radioactivity studies
- Smart Cities and Technologies
- Smart Grid Security and Resilience
- Hydraulic Fracturing and Reservoir Analysis
- SARS-CoV-2 detection and testing
- UAV Applications and Optimization
- Microfluidic and Capillary Electrophoresis Applications
- Thermal properties of materials
- Surface Chemistry and Catalysis
- Electrohydrodynamics and Fluid Dynamics
- Spacecraft Design and Technology
- Electron and X-Ray Spectroscopy Techniques
- Drilling and Well Engineering
- Catalytic Processes in Materials Science
- Innovative Energy Harvesting Technologies
- Structural Health Monitoring Techniques
- Membrane Separation Technologies
Stanford University
2018-2024
James Madison University
2017-2022
Imperial College London
2018-2020
Dyson (United Kingdom)
2018-2020
Australian Broadcasting Corporation (Australia)
2017
Dublin City University
2014-2016
22q11 Ireland
2015
University College Cork
2011-2012
Program for Appropriate Technology in Health
2011
University of Bologna
2011
Abstract Artificial solid‐electrolyte interphase (SEI) is one of the key approaches in addressing low reversibility and dendritic growth problems lithium metal anode, yet its current effect still insufficient due to stability. Here, a new principle “simultaneous high ionic conductivity homogeneity” proposed for stabilizing SEI anodes. Fabricated by facile, environmentally friendly, low‐cost solid‐sulfur vapor reaction at elevated temperature, designed sulfide protective layer successfully...
Although liquid-solid interfaces are foundational in broad areas of science, characterizing this delicate interface remains inherently difficult because shortcomings existing tools to access liquid and solid phases simultaneously at the nanoscale. This leads substantial gaps our understanding structure chemistry key battery systems. We adopt modify a thin film vitrification method preserve sensitive yet critical batteries native electrolyte environments enable cryo–electron microscopy...
The stability of lithium batteries is tied to the physicochemical properties solid-electrolyte interphase (SEI). Owing difficulty in characterizing this sensitive interphase, nanoscale distribution SEI components poorly understood. Here, we use cryogenic scanning transmission electron microscopy (cryo-STEM) map spatial across metallic Li anode. We reveal that LiF, an component widely believed play important role battery passivation, absent within compact film (∼15 nm); instead, LiF particles...
Abstract All‐solid‐state batteries (ASSBs) demonstrate great promise, offering high energy density, good thermal stability, and safe operation compared with traditional Li‐ion batteries. Among various solid‐state electrolytes (SSEs), solid polymer (SPEs) offer an attractive choice due to their thinness, low manufacturability. However, ultrathin SPEs that work practical current densities or at temperatures remain challenging, limiting applicable conditions of SPE‐based Here, the authors...
Significance This study explores the stripping of lithium anodes under various current densities and in different liquid electrolyte systems. We discovered nanovoid formation between solid interphase (SEI). Lithium polarization behavior has been systematically investigated with a three-electrode system ultramicroelectrode. The diffusion migration cations across SEI have determined to be main contributors overpotential. Two modes are proposed based on passivation condition lithium: passivated...
The stability of modern lithium-ion batteries depends critically on an effective solid-electrolyte interphase (SEI), a passivation layer that forms the carbonaceous negative electrode as result electrolyte reduction. However, nanoscopic understanding how SEI evolves with battery aging remains limited due to difficulty in characterizing structural and chemical properties this sensitive interphase. In work, we image carbon black electrodes using cryogenic transmission electron microscopy...
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...
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,...
Fast-charging is considered as one of the most desired features needed for lithium-ion batteries to accelerate mainstream adoption electric vehicles. However, current battery charging protocols mainly consist conservative rate steps avoid potential hazardous lithium plating and its associated parasitic reactions. A highly sensitive onboard detection method could enable fast-charging without reaching regime. Here, we demonstrate a novel differential pressure sensing precisely detect event. By...
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...
At >95% Coulombic efficiencies, most of the capacity loss for Li metal anodes (LMAs) is through formation and growth solid electrolyte interphase (SEI). However, mechanism which this happens remains unclear. One property SEI that directly affects its SEI's solubility in electrolyte. Here, we systematically quantify compare SEIs derived from ether-based electrolytes optimized LMAs using in-operando electrochemical quartz crystal microbalance (EQCM). A correlation among solubility, passivity,...
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+...
Poor fast-charge capabilities limit the usage of rechargeable Li metal anodes. Understanding connection between charging rate, electroplating mechanism, and morphology could enable fast-charging solutions. Here, we develop a combined electroanalytical nanoscale characterization approach to resolve current-dependent regimes plating mechanisms morphology. Measurement Li+ transport through solid electrolyte interphase (SEI) shows that low currents induce at buried Li||SEI interfaces, but high...
Little is known about how evolved hydrogen affects the cycling of Li batteries. Hypotheses include formation LiH in solid-electrolyte interphase (SEI) and dendritic growth LiH. Here, we discover that batteries likely follows a different pathway: Hydrogen during reacts to nucleate grow within already deposited metal, consuming active Li. We provide evidence formed electrically isolates from current collector degrades battery capacity. detect coexistence metal also on graphite silicon anodes,...