A5025313708- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Semiconductor materials and devices
- Recycling and Waste Management Techniques
- Graphene research and applications
- Force Microscopy Techniques and Applications
- Catalytic Processes in Materials Science
- Electrochemical Analysis and Applications
- Transition Metal Oxide Nanomaterials
- Anodic Oxide Films and Nanostructures
- Semiconductor materials and interfaces
- Analytical Chemistry and Sensors
- Magnesium Alloys: Properties and Applications
- Layered Double Hydroxides Synthesis and Applications
- Electron and X-Ray Spectroscopy Techniques
- Fuel Cells and Related Materials
- Ferroelectric and Negative Capacitance Devices
- Membrane-based Ion Separation Techniques
- Surface and Thin Film Phenomena
- Catalysis and Oxidation Reactions
- Nanoporous metals and alloys
Argonne National Laboratory
2015-2025
Alex's Lemonade Stand Foundation
2020
Northwestern University
2009-2014
As new uses for larger scale energy storage systems are realized, chemistries that less expensive or have higher density needed. While lithium-ion been well studied, the availability of opens up possibilities more diverse strategies and uses. One potential path to achieving this goal is explore where a multivalent ion such as Ca2+ Mg2+ active species. Herein, we demonstrate concept Ca-ion system utilizing manganese hexacyanoferrate (MFCN) cathode intercalate Ca reversibly in dry nonaqueous...
A beyond Li-ion battery based on Zn metal, aprotic electrolyte, and a hydrated bilayered V2O5 cathode with large gallery spacing of 11–13 Å is introduced. The exhibits high 20 C rate capability good specific capacity 130 mA h g−1. This work provides some design rules for intercalation behavior in host electrodes nonaqueous environment. As service to our authors readers, this journal supporting information supplied by the authors. Such materials are peer reviewed may be re-organized online...
Abstract The market dynamics, and their impact on a future circular economy for lithium-ion batteries (LIB), are presented in this roadmap, with safety as an integral consideration throughout the life cycle. At point of end-of-life (EOL), there is range potential options—remanufacturing, reuse recycling. Diagnostics play significant role evaluating state-of-health condition batteries, improvements to diagnostic techniques evaluated. present, manual disassembly dominates EOL disposal,...
Abstract Li‐ion battery recycling presents a promising opportunity to decrease dependence on foreign sources of materials and harvest precious within the United States. Herein, superior complete direct process individual end‐of‐life cells is reported where recovered high‐purity cathode active material, as well electrolyte salt Li hexafluorophosphate (LiPF 6 ) can be reused without significant processing. This new utilizes series mechanical separation steps that enable anode while they are...
The development of high-performance graphene-based nanoelectronics requires the integration ultrathin and pinhole-free high-k dielectric films with graphene at wafer scale. Here, we demonstrate that self-assembled monolayers perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) act as effective organic seeding layers for atomic layer deposition (ALD) HfO2 Al2O3 on epitaxial SiC(0001). PTCDA is deposited via sublimation in ultrahigh vacuum shown to be highly ordered low defect density by...
The solid electrolyte interphase (SEI) plays a critical role in the performance and safety of Li-ion batteries, but crystal structure materials formed have not been previously studied. We employ model system epitaxial graphene on SiC to provide well-defined graphitic surface study crystallinity texture formation SEI. observe, via situ synchrotron X-ray scattering, growth LiF crystallites at surface, which increase size with lithiation dose are textured such that (002) planes approximately...
The development of a Mg ion based energy storage system could provide several benefits relative to today's Li-ion batteries, such as improved density. electrolytes for which are typically designed efficiently plate and strip Mg, have not yet been proven work with high voltage cathode materials that needed achieve One possibility is these inherently unstable on porous electrodes. To determine if this indeed the case, electrochemical properties variety were tested using carbon coating graphite...
Increasing the Ni content of LiNixMnyCo1-x-yO2 (NMC) cathodes can increase capacity, but additional stability is needed to improve safety and longevity characteristics. In order achieve this improved stability, Mg Zr were added during coprecipitation uniformly dope final cathode material. These dopants reduced capacity material some extent, depending on concentration calcination temperature. However, these impart substantial stabilization. It was found that degree stabilization strongly...
Direct Li‐ion battery recycling involves separating cathode active materials in the solid phase while preserving their electrochemical performance. To reuse recycled ones new batteries, it is necessary to separate individual components, which would typically occur prior rejuvenation and any compositional reformulation processes. Herein, a froth flotation process developed pristine lithium nickel–manganese–cobalt oxide (LiNi 0.333 Mn Co O 2 , NMC111) manganese (LMO) materials. The results...
Scanning ion conductance microscopy imaging of battery electrodes, using the geometry shown in figure, is a tool for situ nanoscale mapping surface topography and local current. Images silicon tin electrodes show that combination current provides insight into electrochemical phenomena govern operation lithium batteries
Application of a functional surface coating on Li-ion battery electrodes can potentially result in significant enhancement the lifespan cell. In particular, atomic layer deposition (ALD), which create highly conformal ultrathin oxide films many different has been shown to increase cyclability these systems. this study, we explore impact such formation solid electrolyte interphase (SEI), may explain why show improvements cycling performance. Specifically, characterize, using situ scanning ion...
We report an approach to control the reversible electrochemical activity (i.e., extraction/insertion) of Mg(2+) in a cathode host through use phase-pure epitaxially stabilized thin film structures. The MgMn2O4 (MMO) films distinct tetragonal and cubic phases are shown exhibit dramatically different properties (in nonaqueous electrolyte, Mg(TFSI)2 propylene carbonate): MMO shows negligible while (normally found as polymorph at high temperature or pressure) exhibits with associated changes...
Li-ion battery recycling will become critical to the management of end-of-life batteries from electric vehicles. Currently, it is a challenge create profitable process, which made more difficult by reduction in cathode cobalt content. Maintenance structure throughout process can yield increased revenues that may make profitable. This method require careful removal PVDF binder and carbon black, be achieved through thermal processing. It necessary mitigate effects fluorine on material. Herein,...
With significant improvements in electrical energy storage, researchers could change the way is generated and used. One emerging approach to cation that shuttles charge from lithium calcium. Calcium cations, roughly same size as Na+, have many attributes make them a desirable carrier for storage applications, including deposition voltage porous passivation layer. However, system level issues, such corrosion, yet be investigated. Corrosion of current collectors must considered whenever you...
The electrochemical lithiation capacity of 6H silicon carbide (0001) is found to increase by over 1 order magnitude following graphitization at 1350 °C in ultrahigh vacuum. Through several control experiments, this Li-ion enhancement correlated with SiC substrate doping and removal the native oxide surface layer thermal annealing, which renders both bulk electrically conductive. Characterization via multiple depth-resolved spectroscopies shows that lithium penetrates activated upon...
Improving the capacity of LiNixMnyCo1–x–yO2 (NMC) by increasing Ni content results in materials with poor cycling performance and reduced thermal stability. These problems can be alleviated creating concentration gradients materials, but this requires more expensive batch processing. Herein, a simple process is described that create coating penetrates into precursor particles, unique material. The coated material demonstrates improved stability as compared to uncoated materials. Rapid...
Abstract The rapid growth of electric vehicles (EV) has driven the widespread use lithium‐ion batteries (LIBs). This will result in a large amount spent that if not properly disposed pose significant environmental damage, especially from electrolyte. electrolyte contains lithium hexafluorophosphate (LiPF 6 ), which when treated by either incineration or water washing can generate harmful F‐ and P‐containing substances such as hydrofluoric acid (HF). In this study, an innovative two‐step...
Abstract With the increased production of electric vehicles to reduce carbon emissions, lithium‐ion battery market supply those has grown dramatically. To enhance sustainability and circularity, direct recycling methods aim recover intact cathode materials. However, end‐of‐life materials are typically 15–20 years old often have lower energy density compared current address this challenge, a rapid precipitation process is developed boost by converting low Ni‐compositions, LiNi 0.33 Co Mn O 2...
Many countries have started their transition to a net-zero economy. Lithium-ion batteries (LIBs) play an ever-increasing role towards this as rechargeable energy storage medium. Initially, LIBs were developed for consumer electronics and portable devices but seen dramatic growth in use electric vehicles (EVs) via the gradual uptake battery systems (BESSs) over last decade. As such, critical metals (Li, Co, Ni, Mn) chemicals (polymers, electrolytes, Cu, Al, PVDF, LiPF6, LiBF4, graphite)...
Ordered nanoporous templates and membranes with controllable thickness, interpore spacing, pore diameter are fabricated using a combination of nanosphere lithography aluminum anodization. These nanostructured materials possess geometry (see scanning electron microscopy image) that is well suited for variety technological applications including biosensors, nanoscale filters, photovoltaics, catalytic supports. Detailed facts importance to specialist readers published as ”Supporting...