A5049158258- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Thermal Expansion and Ionic Conductivity
- MXene and MAX Phase Materials
- Inorganic Chemistry and Materials
- 2D Materials and Applications
- Advanced Memory and Neural Computing
- X-ray Diffraction in Crystallography
- Supercapacitor Materials and Fabrication
- Energetic Materials and Combustion
- Chemical Synthesis and Characterization
- Crystallization and Solubility Studies
- Chemical Synthesis and Reactions
- Graphene research and applications
- Advanced battery technologies research
- Graphene and Nanomaterials Applications
- Advanced ceramic materials synthesis
- Extraction and Separation Processes
- Dendrimers and Hyperbranched Polymers
University of California, San Diego
2020-2024
Drexel University
2018-2020
Shell (Netherlands)
2020
Philadelphia University
2020
Nanomaterials Research (United States)
2020
Silicon anode solid-state batteries Research on has focused lithium metal anodes. Alloy-based anodes have received less attention in part due to their lower specific capacity even though they should be safer. Tan et al . developed a slurry-based approach create films from micrometer-scale silicon particles that can used with carbon binders. When incorporated into batteries, showed good performance across range of temperatures and excellent cycle life full cells. —MSL
MXenes are a family of two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides with general formula Mn+1XnTx, in which two, three, or four atomic layers (M: Ti, Nb, V, Cr, Mo, Ta, etc.) interleaved C and/or N (shown as X), Tx represents surface termination groups such -OH, ═O, -F. Here, we report the scalable synthesis characterization MXene five metals (Mo4VC4Tx), by synthesizing its Mo4VAlC4 MAX phase precursor that contains no other impurities. These phases display...
Two-dimensional (2D) transition-metal carbides and nitrides (MXenes) have attracted significant attention due to their electronic, electrochemical, chemical, optical properties. However, understanding of thermal stability is still lacking. To date, MXenes are synthesized via top-down wet chemical etching, which intrinsically results in surface terminations. Here, we provide detailed insight into the terminations three carbide (Ti3C2Tx, Mo2CTx, Nb2CTx) by performing gravimetric analysis with...
Rechargeable solid-state sodium-ion batteries (SSSBs) hold great promise for safer and more energy-dense energy storage. However, the poor electrochemical stability between current sulfide-based solid electrolytes high-voltage oxide cathodes has limited their long-term cycling performance practicality. Here, we report discovery of ion conductor Na3-xY1-xZrxCl6 (NYZC) that is both electrochemically stable (up to 3.8 V vs. Na/Na+) chemically compatible with cathodes. Its high ionic...
MXenes demonstrate high performance in energy storage. We report the synthesis and electrochemical characterization of a novel MXene, Mo<sub>x</sub>V<sub>4−x</sub>C<sub>3</sub>.
When exposed to moisture, Li 6 PS 5 Cl undergoes both hydrolysis and hydration reactions. It can be partially recovered by heat treatment, but causes the formation of LiCl, 2 S, 3 PO 4 , oxysulfides due irreversible sulfur loss.
All-solid-state batteries (ASSBs) are one of the most promising systems to enable long-lasting and thermally resilient next-generation energy storage. Ideally, these should utilize low-cost resources with reduced reliance on critical materials. Pursuing cobalt- nickel-free chemistries, like LiFePO4 (LFP), is a strategy. Morphological features LFP essential for improved electrochemical performance highlighted elucidate interfacial challenges when implemented in ASSBs, since adoption inorganic...
Abstract All‐solid‐state sodium ion batteries (AS 3 iBs) are highly sought after for stationary energy storage systems due to their suitable safety and stability over a wide temperature range. Hard carbon (HC), which is low cost, exhibits redox potential, high capacity, integral achieve practical large‐scale sodium‐ion battery. However, the density of battery utilizing this anode material hampered by its initial Coulombic efficiency (ICE). Herein, two strategies, namely i) additional...
Sodium-ion batteries exhibit significant promise as a viable alternative to current lithium-ion technologies owing their sustainability, low cost per energy density, reliability, and safety.
Abstract All-solid-state batteries using Si as the anode have shown promising performance without continual solid-electrolyte interface (SEI) growth. However, first cycle irreversible capacity loss yields low initial Coulombic efficiency (ICE) of Si, limiting energy density. To address this, we adopt a prelithiation strategy to increase ICE and conductivity all-solid-state cells. A significant in is observed for Li 1 paired with lithium cobalt oxide (LCO) cathode. Additionally, comparison...
Solid-state electrolytes (SSEs) are promising candidates to circumvent flammability concerns of liquid electrolytes. However, enhancing energy densities by thinning SSE layers and enabling scalable coating processes remain challenging. While previous studies have addressed thin flexible SSEs, mainly ionic conductivity was considered for performance evaluation, no systematic research on the effects manufacturing conditions quality films performed. Here, both uniformity evaluating under...
One approach to increase the energy density of all-solid-state batteries (ASSBs) is use high-voltage cathode materials. The spinel LiNi0.5Mn1.5O4 (LNMO) one such example, as it offers a high reaction potential (close 5 V). Moreover, Co-free system, which makes an environmentally friendly and low-cost alternative. However, several challenges must be addressed before can properly adopted in ASSB technologies. Herein, we reveal that lithium argyrodite (Li6PS5Cl), sulfide solid-state electrolyte...
All-solid-state batteries have recently gained considerable attention due to their potential improvements in safety, energy density, and cycle-life compared conventional liquid electrolyte batteries. Sodium all-solid-state also offer the eliminate costly materials containing lithium, nickel, cobalt, making them ideal for emerging grid storage applications. However, significant work is required understand persisting limitations long-term cyclability of Na all-solid-state-based In this work,...
Sulfide-based solid electrolytes are known to have narrow electrochemical windows which limit their practical use in all-solid-state batteries (ASSBs). Specifically, when paired with a high-voltage transition metal oxide (TMO) cathode, the electrolyte will typically undergo unwanted degradation via chemical reactions or oxidation, especially upon charging voltages beyond stability window of electrolyte. To mitigate these undesired reactions, thin (<10 nm), conformal, ionically-conducting,...
All-solid-state batteries (ASSB) using lithium-sulfur (Li-S) cathodes, present a low-cost energy storage solution that can achieve densities exceeding 500 Wh kg-1. However, their development in ASSBs has been hindered by poor kinetics, insulative interfaces, and (chemo)mechanical degradation, resulting low utilization cycle life. Here, we manipulate the meta-stability redox activity of sulfide solid electrolytes to form ionically conductive interphases on cathode surface simple scalable...
By using temperature-dependent neutron powder diffraction combined with maximum entropy method analysis, a previously unreported Li lattice site was discovered in the argyrodite Li6PS5Cl solid-state electrolyte. This new finding enables more complete description of diffusion model argyrodites, providing structural guidance for designing novel high-conductivity electrolytes.
Solid-state electrolytes (SSEs) are receiving growing attention as they can replace conventional organic liquid to alleviate flammability issues. The low Young’s modulus, decent ionic conductivity, and good oxidation stability make chloride SSEs promising candidates be used catholytes in all-solid-state batteries. To assess the scalability of SSEs, their chemical air dry room environments needs evaluated. In this study, threechloride investigated for under ambient conditions: Li 2 ZrCl 6...
Anode-free batteries possess the optimal cell architecture due to their reduced weight, volume, and cost. However, implementation has been limited by unstable anode morphological changes anode-liquid electrolyte interface reactions. An electrochemically stable solid can solve these issues enabling deposition of dense sodium metal. Furthermore, a novel type aluminum current collector achieve intimate solid-solid contact with which allows highly reversible plating stripping at both high areal...
The development of silicon anodes to replace conventional graphite in efforts increase energy densities lithium-ion batteries has been largely impeded by poor interfacial stability against liquid electrolytes. Here, stable operation 99.9 weight% micro-Si (uSi) anode is enabled utilizing the interface passivating properties sulfide based solid-electrolytes. Bulk surface characterization, as well quantification components showed that such an approach eliminates continuous growth and...