A5078789489- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Extraction and Separation Processes
- Supercapacitor Materials and Fabrication
- Thermal Expansion and Ionic Conductivity
- Advanced Battery Technologies Research
- Conducting polymers and applications
- Metal and Thin Film Mechanics
- Cellular and Composite Structures
- Hemoglobin structure and function
- Pesticide Residue Analysis and Safety
- Magnetic properties of thin films
- Theoretical and Computational Physics
- Copper Interconnects and Reliability
- High-Velocity Impact and Material Behavior
- Anodic Oxide Films and Nanostructures
- Bacterial Identification and Susceptibility Testing
- 3D Printing in Biomedical Research
- Cassava research and cyanide
- Enzyme function and inhibition
- Nanopore and Nanochannel Transport Studies
- Additive Manufacturing and 3D Printing Technologies
- Enzyme Catalysis and Immobilization
- Membrane Separation Technologies
IBM Research - Almaden
2005-2020
Advanced Energy (United States)
2018
Carleton University
1987
Direct-write 3D printing enables the fabrication of three-dimensional objects via extrusion from a nozzle. Stimuli responsive materials that shear-thin are well-suited as inks for these systems. Poly(isopropyl glycidyl ether)-block-poly(ethylene oxide)-block-poly(isopropyl ether) ABA triblock copolymers were synthesized using controlled ring-opening polymerization to afford dual stimuli-responsive polymers respond both shear forces and temperature. These demonstrated form hydrogels in water....
The use of metallic lithium anodes enables higher energy density and specific capacity Li‐based batteries. However, it is essential to suppress dendrite growth during electrodeposition. Li‐ion‐conducting ceramics (LICC) can mechanically dendritic but are too fragile also have low Li‐ion conductivity. Here, a simple, versatile, scalable procedure for fabricating flexible composite membranes composed single layer LICC particles firmly embedded in polymer matrix with their top bottom surfaces...
Aprotic metal-oxygen batteries, such as Li-O2 and Na-O2 are of topical research interest high specific energy alternatives to state-of-the-art Li-ion batteries. In particular, batteries with NaO2 the discharge product offer higher practical better rechargeability round-trip efficiency when compared this work, we show that electrochemical deposition dissolution in is unperturbed by trace water impurities battery electrolytes, which desirable for applications. We find no evidence formation...
Orientation control of thin film nanostructures derived from block copolymers (BCPs) are great interest for various emerging technologies like separation membranes, nanopatterning, and energy storage. While many BCP compositions have been developed these applications, perpendicular orientation domains is still very challenging to achieve. Herein we report on a new, integration-friendly approach in which small amounts phase-preferential, surface active polymer (SAP) was used as an additive...
Synthetic porogens provide an easy way to create porous structures, but their usage is limited due synthetic difficulties, process complexities and prohibitive costs. Here we investigate the use of bacteria, sustainable naturally abundant materials, as a pore template. The bacteria require no chemical synthesis, come in variable sizes shapes, degrade easier are approximately million times cheaper than conventional porogens. We fabricate free standing multiwalled carbon nanotube (MWCNT) films...
A novel strategy to enhance scratch resistance<italic>via</italic>the incorporation of ZTP onto silica-based sol–gel coating is proposed.
Abstract Sodium–oxygen batteries have drawn considerable attention due to their high specific energy and the abundance of sodium. However, stable sodium–oxygen currently require complex cathode formulations. Here, first demonstration a highly system comprising simple carbon cathode, an ultradry electrolyte, newly designed separator that is both capable blocking dendrites impenetrable oxygen reported. The battery shows remarkable rechargeability more than 400 cycles at current density 0.28 mA...
Li–oxygen batteries could provide energy density that is up to five times greater than of state-of-the-art Li-ion batteries. However, cell rechargeability limited by cathode passivation due nonconductive discharge products. Despite efforts efficiently oxidize these products, oxygen recovery remains poor at potentials where constituents are stable. Transition metal oxide (TMO) cathodes have shown low charging potentials, but a correspondence improved evolution efficiency debated. This because...
Aprotic alkali metal-oxygen batteries are widely considered to be promising high specific energy alternatives Li-ion batteries. The growth and dissolution of metal oxides such as Li2O2 in Li-O2 NaO2 KO2 Na- K-O2 batteries, respectively, is central the discharge charge processes these However, crystal products, especially aprotic electrolytes, poorly understood. In this work, we chose Na-O2 a model system show that there strong correlation between electrolyte salt concentration size. With...
Ultramicrotomy, the technique of cutting nanometers-thin slices material using a diamond knife, was applied to prepare transmission electron microscope (TEM) specimens nanoporous poly(methylsilsesquioxane) (PMSSQ) thin films. This compared focused ion beam (FIB) cross-section preparation address possible artifacts resulting from deformation microstructure during sample preparation. It found that ultramicrotomy is successful TEM specimen method for PMSSQ films when combined with low-energy...
The properties and characteristics of thin-film materials strongly depend on their textures orientations. However, the attainable film morphologies are severely limited by substrates growth thermodynamics. Metastable films that otherwise cannot be grown conventional methods may overcome these limitations, thus allowing a dramatic expansion spectrum Here we present means to grow metastable platinum layers deposited from alloyed with bismuth surfactant material. This is distinct...
Method comparison studies of two different methods for the analysis weak acid dissociable (WAD) cyanide revealed analytical flaws and/or matrix interference problems with both procedures. EPA "draft" method 1677 using a Perstorp 3202 CN analyzer was compared to Standard 4500 I. It discovered that produced more precise and accurate results once appropriate necessary procedural steps from draft were modified. Comparison these methods, based on "real world" samples collected mine-tailing...