Navigation Links
Team uses forest waste to develop cheaper, greener supercapacitors
Date:10/23/2013

CHAMPAIGN, Ill. Researchers report that wood-biochar supercapacitors can produce as much power as today's activated-carbon supercapacitors at a fraction of the cost and with environmentally friendly byproducts.

The report appears in the journal Electrochimica Acta.

"Supercapacitors are power devices very similar to our batteries," said study leader Junhua Jiang, a senior research engineer at the Illinois Sustainable Technology Center at the University of Illinois. While batteries rely on chemical reactions to produce sustained electrical energy, supercapacitors collect charged ions on their electrodes (in this case, the biochar), and quickly release those ions during discharge. This allows them to supply energy in short, powerful bursts during a camera flash, for example, or in response to peak demand on the energy grid, Jiang said.

"Supercapacitors are ideal for applications needing instant power and can even provide constant power like batteries, but at lower cost," he said. They are useful in transportation, electronics and solar- and wind-power energy storage and distribution.

Many of today's supercapacitors use activated carbon usually from a fossil-fuel source, Jiang said.

"Costly and complicated procedures are normally used to develop the microstructures of the carbon to increase the number of pores and optimize the pore network," he said. "This increases the surface area of the electrode and the pores' ability to rapidly capture and release the ions."

In wood-biochar supercapacitors, the wood's natural pore structure serves as the electrode surface, eliminating the need for advanced techniques to fabricate an elaborate pore structure. Wood biochar is produced by heating wood in low oxygen.

The pore sizes and configurations in some woo
'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Risk of Amazon rainforest dieback is higher than IPCC projects
2. Historic trends predict future global reforestation unlikely
3. Heavily logged forests still valuable for tropical wildlife
4. An unprecedented threat to Perus cloud forests
5. Climate change may speed up forests life cycles
6. 400-year study finds Northeast forests resilient, changing
7. Red cedar tree study shows that Clean Air Act is reducing pollution, improving forests
8. Woodland salamanders indicators of forest ecosystem recovery
9. Full genome map of oil palm indicates a way to raise yields and protect rainforest
10. Computer can infer rules of the forest
11. Black bears return to Missouri indicates healthy forests
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Team uses forest waste to develop cheaper, greener supercapacitors
(Date:7/11/2014)... evidence has demonstrated that transplantation of mesenchymal stem cells ... or mouse models of Alzheimer,s disease (AD) and improve ... ischemia. Few studies are reported on the therapeutic effect ... AD and on the effect on oxidative injury and ... Yan and her team, School of Life Sciences, Tsinghua ...
(Date:7/11/2014)... that cannabinoid receptor type 1 can inhibit ... and reduce neurotransmitter release. However, some scholars ... increase extracellular Ca2+ influx and increase neurotransmitter ... Tongji Hospital Affiliated to Tongji Medical College, ... used whole cell voltage-clamp and calcium imaging ...
(Date:7/11/2014)... brains of all vertebrates, information is transmitted through ... chemical signal to be passed from one brain ... most abundant type of synapse, can be either ... learning, memory, perception and cognition, and the balance ... function. For instance, every time we learn ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2
... May 3, 2010-Conventional agriculture production relies heavily on fossil ... a low cost. However, the uncertain future of fossil ... energy efficiencies in other cropping systems. Most of ... of corn and soybean with heavy inputs of fertilizer, ...
... May 3, 2010 Genes interact in complex networks that ... through relationships. Researchers are now discovering how biological networks ... published today in Genome Research ( www.genome.org ), ... shedding light on how interactions go awry in disease. ...
... May 2 Scientists at the University of Pittsburgh School ... a catch of new mediators that not only can explain ... novel treatments for a host of diseases linked to inflammatory ... of Nature Chemical Biology . There is strong ...
Cached Biology News:Reducing fossil energy use on the farm 2Reducing fossil energy use on the farm 3MicroRNA network study implicates rewired interactions in cancer 2Pitt pharmacologists go on a molecular fishing trip and hook prize catch 2
(Date:7/10/2014)... Los Angeles, CA (PRWEB) July 10, 2014 ... Analytical and Bioanalytical techniques during 18-20 August, 2014 at ... to critically review the recent developments in Analytical & ... across the globe. , Speaking on this occasion, Dr. ... that Analytica Acta conference is a remarkable one ...
(Date:7/10/2014)... , July 10, 2014  Kainos Capital, a firm ... today announced that it has acquired the Slim-Fast brand ... the business. Terms of the transaction were not disclosed. ... meal replacement business that markets ready-to-drink shakes, powders, bars ... America and in the United ...
(Date:7/10/2014)... help in the fight against terrorism with the creation ... explosives with the use of light and special glass ... Actuators B: Chemical , the researchers describe a novel ... as low as 6.3 ppm (parts per million). It ... , "Traditionally explosives detection has involved looking for metals ...
(Date:7/10/2014)... batteries that power our laptops and electric vehicles could ... charge with the help of a sponge-like silicon material. ... the graphite traditionally used in one of the battery,s ... energy storage capacity of graphite. A paper describing the ... today in Nature Communications . , "Silicon has ...
Breaking Biology Technology:A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Kainos Capital Acquires Slim-Fast From Unilever 2Detecting trace amounts of explosives with light 2Silicon sponge improves lithium-ion battery performance 2Silicon sponge improves lithium-ion battery performance 3
... the diuretic hydrochlorothiazide (HCTZ) in ... in significant additional blood pressure reductions compared to either drug alone ... or more, medicines - single-tablet combinations simplify treatment by reducing ... number of pills patients take, EAST ...
... Named ,Illinois Rising Stars, CHICAGO, Jan. 18 ... property law firms in the United States, is,pleased to ... "Illinois,Super Lawyers" for 2008 in a survey conducted by ... designated "Rising Stars" in,Illinois., Meredith Martin Addy, chair ...
... Jan. 18 Abbott (NYSE: ABT ),announced today ... for its fully automated HTLV-I/HTLV-II blood screening test,for use ... for use by,laboratories to screen individual donations of blood ... Type I and/or human T --,lymphotropic virus Type II ...
Cached Biology Technology:Video and Photo: Tekturna HCT(R), a Single-tablet Combination of Tekturna(R)* and a Diuretic, Receives US Approval for Treatment of High Blood Pressure 2Video and Photo: Tekturna HCT(R), a Single-tablet Combination of Tekturna(R)* and a Diuretic, Receives US Approval for Treatment of High Blood Pressure 3Video and Photo: Tekturna HCT(R), a Single-tablet Combination of Tekturna(R)* and a Diuretic, Receives US Approval for Treatment of High Blood Pressure 4Video and Photo: Tekturna HCT(R), a Single-tablet Combination of Tekturna(R)* and a Diuretic, Receives US Approval for Treatment of High Blood Pressure 5Twenty-One Brinks Hofer Gilson & Lione Attorneys Named 2008 'Illinois Super Lawyers' 2Abbott Announces Approval of First Fully Automated Blood Screening Test for HTLV-I/HTLV-II 2Abbott Announces Approval of First Fully Automated Blood Screening Test for HTLV-I/HTLV-II 3