A5073861626- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Extraction and Separation Processes
- Conducting polymers and applications
- Microstructure and mechanical properties
- Nuclear and radioactivity studies
- Nuclear Materials and Properties
- Force Microscopy Techniques and Applications
- Aluminum Alloys Composites Properties
- Theoretical and Computational Physics
- Bacterial biofilms and quorum sensing
- Fuel Cells and Related Materials
- Nuclear reactor physics and engineering
- Supercapacitor Materials and Fabrication
- Adhesion, Friction, and Surface Interactions
- Composite Material Mechanics
- Real-time simulation and control systems
- Electric and Hybrid Vehicle Technologies
- Cellular Mechanics and Interactions
- Nonlocal and gradient elasticity in micro/nano structures
- Reliability and Maintenance Optimization
- Thermal Expansion and Ionic Conductivity
- High-Velocity Impact and Material Behavior
- Transition Metal Oxide Nanomaterials
Argonne National Laboratory
2017-2024
Alex's Lemonade Stand Foundation
2017-2020
Lawrence Berkeley National Laboratory
2016-2019
Texas A&M University
2012-2018
Mitchell Institute
2013-2016
University of Tennessee at Knoxville
2012
Oak Ridge National Laboratory
2009-2012
Rutgers, The State University of New Jersey
2007-2011
Office of Scientific and Technical Information
2009
National Technical Information Service
2009
Demonstration of computational domain, concentration profile within electrolyte and phase-map between current modulus highlighting different lithium deposition zones.
Abstract The garnet‐type phase Li 7 La 3 Zr 2 O 12 (LLZO) attracts significant attention as an oxide solid electrolyte to enable safe and robust solid‐state batteries (SSBs) with potentially high energy density. However, while progress has been made in demonstrating compatibility metal, integrating LLZO into composite cathodes remains a challenge. current perspective focuses on the critical issues that need be addressed achieve ultimate goal of all‐solid‐state LLZO‐based battery delivers...
Abstract Lithium-ion batteries play a crucial role in decarbonizing transportation and power grids, but their reliance on high-cost, earth-scarce cobalt the commonly employed high-energy layered Li(NiMnCo)O 2 cathodes raises supply-chain sustainability concerns. Despite numerous attempts to address this challenge, eliminating Co from remains elusive, as doing so detrimentally affects its layering cycling stability. Here, we report rational stoichiometry control synthesizing Li-deficient...
Mechanical constraints have been widely used experimentally to prevent the growth of dendrites within lithium metal. The only article known authors that tries theoretically understand how mechanical forces dendrite was published by Monroe and Newman [J. Electrochem. Soc., 150 (10) A1377 (2005)]. Based on assumption surface tension prevents interfacial roughness, considered pre-stressed conditions electrodes. This scenario indicates prevention means is possible using electrolytes with shear...
Practical implementation of metal anodes in commercial lithium-ion batteries has been limited by the growth dendritic protrusions, which can cause short-circuits and adversely affect battery safety. The impacts physical (such as external pressure electrolyte shear modulus) electrochemical (for example, conductivity, diffusivity transference number) properties a solid on propensity lithium dendrite are investigated here. It is found that over range conditions, there critical pressures above...
Solid state electrolytes (SSEs) with garnet structures and chemical composition Li7La3Zr2O12 (LLZO) are being actively considered as the electrolyte for next-generation lithium ion batteries. These LLZO-based ceramic SSEs polycrystalline possess distinct grain-interior/grain-boundary (GI/GB) microstructure. Lithium dendrite growth through these GI GB domains is to be largest bottleneck preventing their successful implementation. Dendrite has been observed occur predominantly within regions....
There is growing recognition of the critical role void formation in lithium metal anodes solid-state batteries and its impact on electrochemical performance. While experimental studies have demonstrated challenges ensuing from at interface with solid electrolyte, there a need to understand quantify intrinsic transport properties external stimuli, such as temperature, pressure, current density. We develop this understanding by constructing phase field-based model that captures evolution...
Composite polymer electrolytes that incorporate ceramic fillers in a matrix offer mechanical strength and flexibility as solid for lithium metal batteries. However, fast Li+ transport between Li+-conductive filler phases is not simple achievement due to high barriers exchange across the interphase. This study demonstrates how modification of Li7La3Zr2O12 (LLZO) nanofiller surfaces with silane chemistries influences at local global electrolyte scales. Anhydrous reactions covalently link...
Fracture due to diffusion induced stress of electrode active particles has been identified as one the critical factors for capacity fade and impedance rise in lithium-ion batteries. The inherent stochastics underlying crack formation propagation brittle intercalation materials is toward fundamental understanding degradation phenomena limiting battery life performance. A stochastic methodology developed characterize diffusion-induced damage inside particles. Presence a "critical" initial...
In lithium–sulfur (Li–S) batteries, during discharge, solid sulfur (S8(s)) gets dissolved and undergoes successive reduction finally precipitates as lithium sulfide (Li2S) in a typical carbon-based, porous cathode. Deposition of Li2S leads to 80% volume expansion compared S8(s). During the dissolution–precipitation process, total change electrolyte pore space can be attributed two factors: (a) precipitation/dissolution phase; (b) cathode microstructure shrinks or swells accommodate changes...
The majority of the ceramic solid electrolytes (LLZO, LATP) demonstrate polycrystalline grain/grain-boundary (G/GB) microstructure. Higher lithium (Li) concentration and lower mechanical stiffness result in current focusing at GBs. Growth Li dendrites through local inhomogeneities subsequent short circuit cell is a major concern. Recent studies have revealed that bulk metal viscoplastic material has low (∼0.3 MPa) high (∼1.0 yield strength during deformation smaller larger rates strain,...
Next generation lithium ion batteries require higher energy and power density, which can be achieved by tailoring the cathode particle morphology, such as size, size distribution, internal porosity. All these morphological features are determined during synthesis process, consists of two steps, (i) coprecipitation (ii) calcination. Transition metal hydroxide precursors synthesized whereas their oxidation lithiation occur The distribution crystalline primary aggregated secondary particles...
Abstract Nanoscale morphology has a direct impact on the performance of materials for electrochemical energy storage. Despite this importance, little is known about evolution primary particle nor its effect chemical pathways during synthesis. In study, operando characterization combined with atomic‐scale and continuum simulations to clarify relationship between cathode particles their lithiation calcination LiNi 0.8 Mn 0.1 Co O 2 (NMC‐811). This approach reveals key role surface oxygen...
Calcination is a solid-state synthesis process widely deployed in battery cathode manufacturing. However, its inherent complexity associated with elusive intermediates hinders the predictive of high-performance materials. Here, correlative situ X-ray absorption/scattering spectroscopy used to investigate calcination nickel-based cathodes, focusing specifically on archetypal LiNiO
A one-dimensional computational framework is developed that can solve for the evolution of voltage and current in a lithium-ion battery electrode under different operating conditions. reduced order model specifically constructed to predict growth mechanical degradation within active particles carbon anode as function particle size C-rate. Using an effective diffusivity relation, impact microcracks on has been captured. Reduction capacity due formation negative conditions (constant discharge...
The growing interest in solid-state batteries has resulted increased focus on the issue of delamination at cathode/solid-state electrolyte (SSE) interface. extent delamination, and its impact impedance rise capacity fade, is determined by a number material properties, including cathode molar volume change state-of-charge dependence, mechanical properties SSE, SSE grain boundary microstructure, fracture threshold interface, interfacial exchange current density. goal this paper to develop...
Mechanical degradation, owing to intercalation induced stress and fracture, is a key contributor the electrode performance decay in lithium-ion batteries. Solid state diffusion of lithium ions active particles causes concentration gradients, which results generation formation microcracks or propagation preexisting cracks. Formation turn affects solid transport interfacial charge transfer resistance. In this work, systematic investigation influence mechanical degradation on resistance...
The crystallographic structure and microstructure of solid electrolytes, such as Li7La3Zr2O12 (LLZO), have a profound impact on their reactivity, conductivity, stability toward dendrites in solid-state batteries. Controlling the material's morphology requires fine control during synthesis process, where multiple conditions (precursor particle size/distribution, calcination/sintering temperature, ramp rate, etc.) influence performance. This paper describes, for first time, operando...
Abstract Composite solid electrolytes (CEs), wherein ion-conducting polymer and ceramic/glass is mixed, are promising candidates for all-solid-state batteries due to their promise of acceptable ionic conductivity mechanical properties compared individual constituents. While numerous studies have focused on improving the performance CEs, it still unclear what material targets that can result in improved macroscopic especially light coupled needs high transport strength these materials. In...
Composite polymer electrolytes (CPEs) are attractive materials for solid-state lithium metal batteries, owing to their high ionic conductivity from ceramic conductors and flexibility components. As with all however, CPEs face the challenge of dendrite formation propagation. Not only does this lower critical current density (CCD) before cell shorting, but uncontrolled growth deposits may limit Coulombic efficiency (CE) by creating dead lithium. Here, we present a fundamental study on how...