A5072491631- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Thermal Expansion and Ionic Conductivity
- Semiconductor materials and devices
- Anodic Oxide Films and Nanostructures
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
- Silicon and Solar Cell Technologies
- Corrosion Behavior and Inhibition
- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Transition Metal Oxide Nanomaterials
- Advanced battery technologies research
- Thin-Film Transistor Technologies
- Zeolite Catalysis and Synthesis
- Nonlinear Optical Materials Research
- Solid-state spectroscopy and crystallography
- Flame retardant materials and properties
- Electron and X-Ray Spectroscopy Techniques
- Synthesis and properties of polymers
Johns Hopkins University Applied Physics Laboratory
2022-2024
University of Maryland, College Park
2017-2023
Abstract Solid‐state batteries have many enticing advantages in terms of safety and stability, but the solid electrolytes upon which these are based typically lead to high cell resistance. Both components resistance (interfacial, due poor contact with electrolytes, bulk, a thick electrolyte) result rudimentary manufacturing capabilities that exist for solid‐state electrolytes. In general, studied as flat pellets planar interfaces, minimizes interfacial area. Here, multiple ink formulations...
Significance Solid-state lithium metal anode possesses great promise owing to its high energy density and improved safety. This work introduces a strategy for constructing 3D Li anode, which is hosted in solid-state ion-conducting host shows safe dendrite-free plating/stripping behavior. The based on garnet-type ion-conductive framework bottom-deposited Cu current collector. plated within the solid garnet from bottom layer deposition behavior, effectively averting dendrite penetration issue....
Solid-state electrolytes (SSEs) have been widely considered as enabling materials for the practical application of lithium metal anodes. However, many problems inhibit widespread solid state batteries, including growth dendrites, high interfacial resistance, and inability to operate at current density. In this study, we report a three-dimensional (3D) mixed electron/ion conducting framework (3D-MCF) based on porous-dense-porous trilayer garnet electrolyte structure created via tape casting...
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 The cubic‐garnet (Li 7 La 3 Zr 2 O 12 , LLZO) lithium–sulfur battery shows great promise in the pursuit of achieving high energy densities. sulfur used cathodes is abundant, inexpensive, and possesses specific capacity. In addition, LLZO displays excellent chemical stability with Li metal; however, instabilities cathode/LLZO interface can lead to performance degradation that limits development these batteries. Therefore, it critical resolve interfacial challenges achieve stable...
Lithium garnet Li7La3Zr2O12 (LLZO), with high ionic conductivity and chemical stability against a Li metal anode, is considered one of the most promising solid electrolytes for lithium-sulfur batteries. However, an infinite charge time resulting in low capacity has been observed Li-S cells using Ta-doped LLZO (Ta-LLZO) as electrolyte. It was that this cell failure correlated lanthanum segregation to surface Ta-LLZO reacts sulfur cathode. We demonstrated correlation by excess deficient...
The use of solid-state electrolyte may be necessary to enable safe, high-energy-density Li metal anodes for next-generation energy storage systems. However, the inhomogeneous local current densities during long-term cycling result in instability and detachment anode from electrolyte, which greatly hinders practical application. In this study, we report a new approach maintain stable | interface by depositing an amorphous carbon nanocoating on garnet-type electrolyte. provides both electron...
Using the nanoindentation technique, we probed mechanical properties of tape cast and sintered thin doped Li7La3Zr2O12 garnet electrolytes. For comparison, a bulk sample fabricated by die pressing sintering was also studied. The results indicate that has significantly higher elastic modulus (∼155 GPa), hardness (∼11 indentation fracture toughness (∼1.12 ± 0.12 MPa·m1/2) than (∼142 GPa, ∼10 ∼0.97 0.10 MPa·m1/2, respectively). above demonstrate can more effectively prevent lithium dendrite...
Abstract 3D focused ion beam tomography is used to analyze the microstructures of Li‐ion conducting Li 6.75 La 2.75 Ca 0.25 Zr 1.5 Nb 0.5 O 12 (LLCZN) garnet porous electrolytes with different levels porosity and theoretical effective bulk conductivities electrolyte are calculated based on LLCZN volume fraction, constriction factor, geometric tortuosity, percolation factor. The experimentally measured consistently lower than values when assuming constant conductivity, suggesting conductivity...
Abstract Additively manufactured scandium-doped AA5083 aluminum-magnesium alloy (AA5083-Sc) has a higher yield strength compared to the undoped version. However, AA5083-Sc is prone pitting and microbiologically induced corrosion in seawater. Chemical conversion coating using aqueous cerium (III) nitrate, Ce(NO 3 ) , provides only moderate improvement resistance. Electrochemical anodic oxidation of alloy’s surface 0.2-M solution at pH 4, conducted over an extended period low current density,...
Lithium metal anodes are vital enablers for high-energy all-solid-state batteries (ASSBs). To promote ASSBs in practical applications, performance limitations such as the high lithium interface resistance and grain boundary solid electrolyte (SE) need to be understood reduced by optimization of cell design. In this work, we use our 3D microstructure-resolved simulation approach combined with a modified transport model SE shed some light on aforementioned garnet ASSBs. Using high-resolution...
A persistent challenge for lithium-ion batteries (LIBs) is operation under extreme environments, where temperatures can exceed −40 and 60 °C. At the same time, a growing number of high-impact applications require that demonstrate longevity high performance during low- high-temperature operation, such as vehicle electrification, polar expeditions, satellites/spacecraft. The discovery novel electrolytes therefore critical developing next-generation energy storage solutions to widen operational...
Nitrile-based electrolytes are attractive for low temperature Li-ion batteries.
Lithium-ion-conducting garnets are one of the most promising solid-state electrolytes to replace liquid organic in lithium batteries, resulting a tremendous and rapidly increasing number garnet publications commercial activity. However, these typically based on nominal content with addition excess qualitatively supplement losses during calcining sintering, an inexact composition that directly influences sintered garnet's physical electrochemical properties. In this study, we systematically...
We demonstrate that a hybrid electrolyte comprising an ionic liquid, 1-ethyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide, and propylene carbonate, enable wide operational temperature window (−20 °C to 60 °C).
Abstract Fiber batteries are essential for the realization of high‐performance wearable and textile electronics with desirable features conventional textiles, including breathability, stretchability, washability. However, development fiber is limited by scalability performance since most reported fabrication techniques not compatible standard battery manufacturing. This work presents a novel method scalable stacked design analogous to that pouch cells using layer lamination laser machining....
Li-ion batteries have become prevalent in several consumer markets due to the many inherent advantages of chemistry. However, concerns continue grow over extreme toxicity and flammability organic electrolyte employed commercial batteries. Several approaches mitigate these mainly involve use different types additives acting capacities reduce possibility and/or extremity cell failure. too often come at cost decreased lifetime, efficiency, power. On other hand, solid-state electrolytes made...
Recent advancements in solid electrolytes have brought all solid-state lithium batteries much closer to a commercial reality. Lithium garnet materials such as Li 7 La 3 Zr 2 O 12 , or LLZ, are ceramic conductors that several uniquely advantageous properties: they completely non-flammable, low cost produce, and stable metal, which has an energy density more than 10x higher standard graphite electrodes (3860 mAh/g). The main areas challenging the development of all-solid-state Li-ion...
Additively-manufactured AA5083 and other aluminum alloys are becoming increasingly common in parts manufacturing. Additive manufacturing enables incorporation of dopants, such as Sc, amounts exceeding their solubility limit, leading to a considerable increase the yield strength while maintaining ductility alloy. Concurrent with mechanical improvement is deterioration corrosion resistance  To alloy pitting well uniform corrosion, we utilize cerium nitrate aqueous solution conversion coat its...
As demands on battery technology approach the limits of standard organic liquid electrolytes, a multitude new materials are being developed as potential replacements, including solid-state Li-conducting ceramics. However, major obstacles to integrating solid electrolytes into Li-ion batteries originate primarily from relatively low ionic conductivity electrolyte itself (compared electrolytes) and high interfacial impedance associated with poor electrolyte-electrode contact. Several...
Fibrous ceramic fabrics are commercially available products in different technical fields[1]. The fabrication technologies of fibrous mainly categorized into direct spinning process and indirect template process. Here, we employed the to create proof-of-concept lithium ion conductive fabrics, which generates unique structure with fine 3D scale distribution continues phase, high surface area/volume ratio, low gravimetric density, multi-level porosity, certain strength flexibility....