Sentences with phrase «of electrode materials»

Summary Inorganic chemist with 4 + years of experience specialized in the synthesis and physical characterization of new battery electrode materials, as well as electrochemical characterization of electrode materials in cells.

The team is interested in understanding mechanisms for CO2 reduction using a variety of electrode materials (e.g., Cu) and in controlling product selectivity.

He estimates the price of the electrode materials at about one third of the price of electrodes in a lithium - ion battery.

Then they applied the carbon to the surface of electrode materials used in supercapacitors, devices that store and deliver energy more quickly and more powerfully than a typical battery.

Working with powerful imaging technologies in DOE's Environmental Molecular Sciences Laboratory (EMSL), the team determined that a kind of thorn with the crystallographic spinel structure grows out of the electrode material and eventually leads to the complete conversion of the whole electrode material into the spinel structure.

The Nissan Leaf is also experiencing production issues, specifically the availability of electrode material that will allow for greater volume.

Not exact matches

The gold - polyurethane material could someday be used in the form of implantable electrodes in the brain for treating movement disorders or in the heart to help regulate cardiac activity.

By attaching a series of electrodes to the conductive materials, researchers showed they could use a well - known technique called electric field tomography to sense the position of a finger touch.

The results of this work could lead to the ability to design materials that have extensive surface areas that can be used in batteries as high durability silicon electrodes.

The new study is the first to demonstrate the synthesis of active electrode materials using a fungal biomineralization process, illustrating the great potential of these fungal processes as a source of useful biomaterials.

Having the electrode in the form of tiny suspended particles instead of consolidated slabs greatly reduces the path length for charged particles as they move through the material — a property known as «tortuosity.»

The new battery design is a hybrid between flow batteries and conventional solid ones: In this version, while the electrode material does not flow, it is composed of a similar semisolid, colloidal suspension of particles.

A group of Drexel University researchers have created a fabric - like material electrode that could help make energy storage devices — batteries and supercapacitors — faster and less susceptible to leaks or disastrous meltdowns.

When the microbes found in the soildigest organic materials, they naturally produce a small current, which can beharnessed with a simple device consisting of two electrodes and a small circuitboard.

Phase evolution for conversion reaction electrodes in lithium - ion batteries Surface reconstruction and chemical evolution of stoichiometric layered cathode materials for lithium - ion batteries

Used as a counter electrode in a dye - sensitized solar cell, the material enabled the cell to convert power with up to 6.8 percent efficiency and more than doubled the performance of an identical cell that instead used an expensive platinum wire counter electrode.

Unlike traditional supercapacitors, which use the same material for both electrodes, the anode and cathode in an asymmetric supercapacitor are made up of different materials.

In the first practical application for the machine learning, the team worked with Assistant Professor Jim Cahoon, Ph.D., in the UNC Department of Chemistry to design a new electrode material for a type of low - cost solar cells.

The researchers also fitted their battery with electrodes made of organic compounds, rather than the typical transition - metal - rich materials.

And what we do is, through kind of a combination, directed evolution and selection, kind of a Darwinian process, we force these viruses or encourage these viruses to work with materials that we are interested in — semiconductor materials and metal oxide materials for electrodes.

But since the material that will be needed for the electrode in these batteries is a mixture of the two, it may be possible to save on the initial materials costs by using «lower» grades of the two metals that already contain some of the other.

They then dipped their electrode starting materials alternatively in solutions containing the oppositely charged nanotubes, binding successive layers of tubes atop one another to build up their nanotube electrodes.

The new power source, which runs on liquid fuels, has at its core a thin layer of electrolyte materials sandwiched between electrode materials.

On top of it they placed a metal electrode coated with a 10 - to 50 - nanometer - thick film of an insulating material.

But it is not that simple, due to corrosion of electrodes, unless they are made of expensive materials.

An early version created by Donald Sadoway, a materials scientist at the Massachusetts Institute of Technology in Cambridge, and colleagues consisted of a top electrode made from liquid magnesium, a bottom electrode of antimony, and a molten salt electrolyte in between.

These alternative electrodes could be capable of storing nearly three times as much energy as graphite, the material of choice in current lithium - ion batteries.

Their simulations revealed some often - ignored factors «such as the thinness of electrode coatings and the material's electrical parameters,» says Yao.

Developing a mathematical model of a multilayered polymer cantilever coated with metal electrodes, the researchers systematically calculated how different material parameters affected the energy output.

To do this, they «chemically assembled a series of double - dot SETs by anchoring two gold nanoparticles between the nanogap electrodes with alkanedithiol molecules to form a self - assembled monolayer,» explained Yutaka Majima, a professor in the Materials and Structures Laboratory at the Tokyo Institute of Technology.

But manufacturers of high - energy applications such as electric cars and power storage systems seek for new electrode materials and electrolytes.

For example, engineers are experimenting with special electrode materials that can provide a voltage of nearly 5 volts, instead of the current maximum of 4.2 to 4.3 volts.

Kensuke Kobayashi (Professor, Graduate School of Science, Osaka University) and Sadashige Matsuo (Assistant Professor, Graduate School of Engineering, The University of Tokyo), in cooperation with research groups led by Teruo Ono (Professor, Institute for Chemical Research, Kyoto University) and Kazuhito Tsukagoshi (Research Fellow, International Center for Materials Nanoarchitectonics, National Institute for Materials Science), produced graphene samples capable of forming p - n junctions by combining gate electrodes and performed precise measurements of current - fluctuation («shot noise») in the graphene p - n junction in the QH regime in the strong magnetic fields and at low temperatures.

An international team led by researchers from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) used advanced techniques in electron microscopy to show how the ratio of materials that make up a lithium - ion battery electrode affects its structure at the atomic level, and how the surface is very different from the rest of the material.

«Although we made a lot of efforts, there are still small gaps between the side walls of the electrodes and the piezoelectric materials.»

This illustration shows a battery electrode made of lithium iron phosphate (left side of image) coated with carbon, and in contact with an electrolyte material.

These include the material's quantum capacitance (the ability of the material to absorb charge) and the material's absolute Fermi level, which determines how many lithium ions may bond to the electrodes.

His team placed a piece of glass and an electrically conductive material on top of the spinach - peptide mixture and a semiconductor and an electrode below it.

IDT electrodes are typically placed on top of piezoelectric materials to perform this conversion.

Scientists have tried building the electrodes out of common semiconductors such as silicon or gallium arsenide — which absorb light and are also used in solar panels — but a major problem is that these materials develop an oxide layer (that is, rust) when exposed to water.

In the middle and right images, produced using an X-ray technique at Berkeley Lab, there is a clear contrast in an exploration of the manganese chemistry in a battery electrode material.

«One of the direct benefits of utilizing such materials for both electrodes in the battery is that neither of the two electrodes fundamentally limits the power capability, cycle life, or cost of the device,» said Colin Wessells, CEO at Natron Energy.

Either the increased concentration of free calcium ions or their increased mobility (likely both, the researchers speculate) results in a decrease in the electrical resistance throughout the material, which can be detected with a multimeter connected to electrodes embedded in the film.

«The very interesting part here is that both electrodes are based on the chemistry of transition metals in the same type of materials,» he added, with iron in the cathode and a special manganese chemistry in the anode.

The preparation of the described biosensors is expensive and complex, though: the electrodes are made of a biocompatible and electrically conductive material, such as gold or platinum.

«The best lithium battery cathodes [negative electrodes] all contain cobalt, and its production is limited,» says study lead Elsa Olivetti, a materials scientist and engineer at the Massachusetts Institute of Technology.

Bonaccorso adds that the challenge ahead is to demonstrate a disruptive technology in which two - dimensional materials not only replace traditional electrodes, but more importantly enable the design of whole new device concepts.

Strontium cobaltites are just one example of a class of materials known as transition metal oxides, which is considered promising for a variety of applications including electrodes in fuel cells, membranes that allow oxygen to pass through for gas separation, and electronic devices such as memristors — a form of nonvolatile, ultrafast, and energy - efficient memory device.

To make all of this possible one day, TUM researchers want to continue investigating and optimizing the electrode material further and make their know - how available to industry.

The researchers became the first to design a ferroelectric junction with electrodes made of graphene, a carbon material only one atom thick.