Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Next generation anode to improve lithium-ion batteries

04.08.2016

Silicon-tin nanocomposite developed at UCR could lead to low cost, long lasting rechargeable batteries for electronic devices and electric vehicles

Researchers at the University of California, Riverside have created a new silicon-tin nanocomposite anode that could lead to lithium-ion batteries that can be charged and discharged more times before they reach the end of their useful lives. The longer-lasting batteries could be used in everything from handheld electronic devices to electric vehicles.


The silicon-tin nanocomposite developed at UCR viewed by high angle angular dark field imaging. The larger green particles are silicon and the smaller red particles are tin.

Credit: UC Riverside

Titled "Tin Nanoparticles as an Effective Conductive Addition in Silicon Anodes," a paper describing the research was published Wednesday (Aug. 3) in the journal Scientific Reports. The project was led by Lorenzo Mangolini, an associate professor of mechanical engineering and materials science and engineering in UCR's Bourns College of Engineering.

Lithium-ion batteries, the most popular rechargeable batteries in personal electronics, are composed of three main parts: an anode, a cathode, and a lithium salt dissolved in an organic solvent. While graphite is the material of choice for most anodes, its performance is a limiting factor in making better batteries and expanding their applications.

Both silicon and tin have been investigated as novel high-performance alternatives for graphite anodes. In the current research, Mangolini's group showed for the first time that combining both materials into a single composite leads to dramatic improvements in battery performance. In addition to tripling the charge capacity offered by graphite, the silicon-tin nanocomposite is extremely stable over many charge-discharge cycles, essentially extending its useful life. These features, coupled with a simple manufacturing process, could help the expansion of lithium-ion batteries for use in next-generation vehicles.

"Lithium-ion batteries are growing in popularity for electric vehicles and aerospace applications, but there is a clear need to alleviate range anxiety--the fear that a vehicle won't have enough charge to reach its destination--before we will see large-scale adoption. Any technology that can help is welcome, as long as it is simple and scalable, and our technology meets both those criteria," Mangolini said.

Mangolini said adding tin to the silicon, rather than another conductive material such as carbon black, would circumvent the low conductivity of silicon without decreasing energy storage.

"The synergistic effects between these two materials lead to batteries that exceed the performance of each of the two components alone, an improvement that is a result of the high electrical conductivity and good energy storage capacity of tin. This can be achieved with the addition of even minor amounts of tin, as small as 2 percent by weight," he said.

###

In addition to Mangolini, the research team comprised Lanlan Zhong, a graduate student in materials science and engineering and the first author on the paper; Chad Beaudette, an undergraduate in mechanical engineering; Juchen Guo, assistant professor of chemical and environmental engineering; and Krassimir Bozhilov, associate adjunct professor of materials science and engineering and manager of UCR's Central Facility for Advanced Microscopy and Microanalysis.

Media Contact

Sarah Nightingale
sarah.nightingale@ucr.edu
951-827-4580

 @UCRiverside

http://www.ucr.edu 

Sarah Nightingale | EurekAlert!

More articles from Power and Electrical Engineering:

nachricht Laser sensor LAH-G1 - optical distance sensors with measurement value display
15.08.2017 | WayCon Positionsmesstechnik GmbH

nachricht Engineers find better way to detect nanoparticles
14.08.2017 | Washington University in St. Louis

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

A Map of the Cell’s Power Station

18.08.2017 | Life Sciences

Engineering team images tiny quasicrystals as they form

18.08.2017 | Physics and Astronomy

Researchers printed graphene-like materials with inkjet

18.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>