Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > University of Houston researchers discover N-type polymer for fast organic battery: New material opens the door to low-cost, environmentally friendly energy use

Rational combination of advantages of state-of-the-art polymers has resulted in highly electronically conducting polymers that could enable a battery to be 80 percent charged within 6 seconds, and fully charged in another 18 seconds.
CREDIT: University of Houston
Rational combination of advantages of state-of-the-art polymers has resulted in highly electronically conducting polymers that could enable a battery to be 80 percent charged within 6 seconds, and fully charged in another 18 seconds.

CREDIT: University of Houston

Abstract:
Researchers at the University of Houston have reported developing an efficient conductive electron-transporting polymer, a long-missing puzzle piece that will allow ultrafast battery applications.

University of Houston researchers discover N-type polymer for fast organic battery: New material opens the door to low-cost, environmentally friendly energy use

Houston, TX | Posted on April 6th, 2015

The discovery relies upon a "conjugated redox polymer" design with a naphthalene-bithiophene polymer, which has traditionally been used for applications including transistors and solar cells. With the use of lithium ions as dopant, researchers found it offered significant electronic conductivity and remained stable and reversible through thousands of cycles of charging and discharging energy.

The breakthrough, described in the Journal of the American Chemical Society and featured as ACS Editors' Choice for open access, addresses a decades-long challenge for electron-transport conducting polymers, said Yan Yao, assistant professor of electrical and computer engineering at the UH Cullen College of Engineering and lead author of the paper.

Researchers have long recognized the promise of functional organic polymers, but until now have not been successful in developing an efficient electron-transport conducting polymer to pair with the established hole-transporting polymers. The lithium-doped naphthalene-bithiophene polymer proved both to exhibit significant electronic conductivity and to be stable through 3,000 cycles of charging and discharging energy, Yao said.

The discovery could lead to a cheaper alternative to traditional inorganic-based energy devices, including lithium batteries. Ultimately, Yao said, it could translate into less expensive consumer devices and even less expensive electric cars.

Yao's research group focuses on green and sustainable organic materials for energy generation and storage. He is also a principal investigator for the Texas Center for Superconductivity at UH.

Yanliang Liang, a research associate at UH and first author on the paper, said researchers aren't trying to compete directly with conventional lithium-ion batteries. "We are trying to demonstrate a new direction," he said.

Liang said conventional inorganic metal-based batteries and energy storage devices are expensive partly because the materials used to make them, including cobalt and silicon-based compounds, require huge energy expenditures to process. Organic polymers can be processed at relatively low temperatures, lowering the cost.

They also produce less CO2, he said, adding to their environmental advantage. And while conventional materials are finite, organic polymers could potentially be synthesized from biomass.

"Organic π-conjugated polymers are emerging as a materials class for energy-related applications, enabling a path to a more sustainable energy landscape without the need of energy-intensive, expensive and sometimes toxic metal-based compounds," the researchers wrote, concluding that "a model polymer, P(NDI2OD-T2), was stably and reversibly n-doped to a high doping level of 2.0, a significant progress for electron-transporting π-conjugated polymers. ... With rational molecular design, π-conjugated redox polymers will establish new design space in polymer chemistry and see wide-spread applications, especially in energy-related ones such as batteries, supercapacitors and thermoelectrics."

The basic polymer used in the work was discovered in 2009; Yao said it was provided by members of the research team from Polyera Corporation, a technology company based in Illinois. Although naphthalene-bithiophene has been used for transistors and other applications since its discovery, this is the first time it has been converted for use in energy storage.

That was done through the addition of lithium and raised the polymer's doping level from a previously reported 0.1 to 2.0.

The results are record-setting. The polymer exhibits the fastest charge-discharge performance for an organic material under practical measurement conditions, allowing a battery to be 80 percent charged within 6 seconds and fully charged in another 18 seconds, Liang said.

Conventional inorganic batteries still are capable of holding more energy than the organic battery, and Yao said work will continue to improve the storage capacity of the material. His group also will continue to do basic scientific research on the polymer to learn more about it, he said.

####

About University of Houston
The University of Houston is a Carnegie-designated Tier One public research university recognized by The Princeton Review as one of the nation's best colleges for undergraduate education. UH serves the globally competitive Houston and Gulf Coast Region by providing world-class faculty, experiential learning and strategic industry partnerships. Located in the nation's fourth-largest city, UH serves more than 40,900 students in the most ethnically and culturally diverse region in the country.

For more information, please click here

Contacts:
Jeannie Kever

713-743-0778

Copyright © University of Houston

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

For more information, the paper is available at:

Related News Press

News and information

Getting to the root of tooth replantation challenges: Researchers from Tokyo Medical and Dental University (TMDU) report a delivery system that promotes healing in tooth replantation in rats September 17th, 2021

Researchers reveal multi-path mechanism in electrochemical CO2 reduction September 17th, 2021

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

Silver nanoparticles boost performance of microbial fuel cells September 17th, 2021

Discoveries

Ultrasound at the nanometre scale reveals the nature of force September 17th, 2021

A simple way to get complex semiconductors to assemble themselves: Much like crystallizing rock candy from sugar syrup, the new method grows 2D perovskites precisely layered with other 2D materials to produce crystals with a wide range of electronic properties September 17th, 2021

Getting to the root of tooth replantation challenges: Researchers from Tokyo Medical and Dental University (TMDU) report a delivery system that promotes healing in tooth replantation in rats September 17th, 2021

Researchers reveal multi-path mechanism in electrochemical CO2 reduction September 17th, 2021

Materials/Metamaterials

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

New substance classes for nanomaterials: Nano spheres and diamond slivers made of silicon and germanium: Potential applications as nano semiconductor materials September 10th, 2021

Patterning silicon at the one nanometer scale: Scientists engineer materials’ electrical and optical properties with plasmon engineering August 13th, 2021

Quantum computing enables unprecedented materials science simulations: Multi-institutional team provides a foundation for unraveling the mysteries of magnetic materials August 6th, 2021

Announcements

Getting to the root of tooth replantation challenges: Researchers from Tokyo Medical and Dental University (TMDU) report a delivery system that promotes healing in tooth replantation in rats September 17th, 2021

Researchers reveal multi-path mechanism in electrochemical CO2 reduction September 17th, 2021

Scientists demonstrate pathway to forerunner of nanotubes that could lead to widespread industrial fabrication September 17th, 2021

Silver nanoparticles boost performance of microbial fuel cells September 17th, 2021

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

New nano particles suppress resistance to cancer immunotherapy September 17th, 2021

New physics research reveals fresh complexities about electron behavior in materials September 17th, 2021

Good for groundwater – bad for crops? Plastic particles release pollutants in upper soil layers: The environmental geoscientists at the Centre for Microbiology and Environmental Systems Science (CMESS) focused on a variety of parameters that contribute to plastic pollution in far September 17th, 2021

Ultrasound at the nanometre scale reveals the nature of force September 17th, 2021

Energy

Silver nanoparticles boost performance of microbial fuel cells September 17th, 2021

Gamechanger for clean hydrogen production, Curtin research finds: Curtin University research has identified a new, cheaper and more efficient electrocatalyst to make green hydrogen from water that could one day open new avenues for large-scale clean energy production September 17th, 2021

Cheaper hydrogen production: Efficient water and urea electrolysis with bimetallic yolk-shell nanoparticles September 10th, 2021

Perovskite solar cells: Interfacial loss mechanisms revealed August 20th, 2021

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Stretching the capacity of flexible energy storage September 10th, 2021

Polymer electrolytes for all-solid-state batteries without dead zones August 20th, 2021

Researchers discover a new inorganic material with lowest thermal conductivity ever reported July 16th, 2021

Proliferation of electric vehicles based on high-performance, low-cost sodium-ion battery:A large-capacity anode material is developed for sodium-ion batteries by using low-cost silicone-based oil. This process, if commercialized, is expected to significantly reduce manufacturing June 18th, 2021

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project