Some of the 300 million tires discarded each year in the United States alone could be used in supercapacitors for vehicles and the electric grid using a technology developed at the Department of Energy’s Oak Ridge National Laboratory and Drexel University.
By employing proprietary pretreatment and processing, a team led by Parans Paranthaman has created flexible polymer carbon composite films as electrodes for supercapacitors. These devices are useful in applications for cars, buses and forklifts that require rapid charge and discharge cycles with high power and high energy density. Supercapacitors with this technology in electrodes saw just a 2 percent drop after 10,000 charge/discharge cycles.
The technology, described in a paper published in ChemSusChemby Wiley-VCH, follows an ORNL discovery of a method to use scrap tires for batteries. Together, these approaches could provide some relief to the problems associated with the 1.5 billion tires manufacturers expect to produce annually by 2035.
“Those tires will eventually need to be discarded, and our supercapacitor applications can consume several tons of this waste,” Paranthaman said. “Combined with the technology we’ve licensed to two companies to convert scrap tires into carbon powders for batteries, we estimate consuming about 50 tons per day.”
While that amount represents just a fraction of the 8,000 tons that need to be recycled every day, co-author Yury Gogotsi of Drexel noted that other recycling companies could contribute to that goal.
“Each tire can produce carbon with a yield of about 50 percent with the ORNL process,” Gogotsi said. “If we were to recycle all of the scrap tires, that would translate into 1.5 million tons of carbon, which is half of the annual global production of graphite.”
To produce the carbon composite papers, the researchers soaked crumbs of irregularly shaped tire rubber in concentrated sulfuric acid. They then washed the rubber and put it into a tubular furnace under a flowing nitrogen gas atmosphere. They gradually increased the temperature from 400 degrees Celsius to 1,100 degrees.
After several additional steps, including mixing the material with potassium hydroxide and additional baking and washing with deionized water and oven drying, researchers have a material they could mix with polyaniline, an electrically conductive polymer, until they have a finished product.
“We anticipate that the same strategy can be applied to deposit other pseudocapacitive materials with low-cost tire-derived activated carbon to achieve even higher electrochemical performance and longer cycle life, a key challenge for electrochemically active polymers,” Gogotsi said.
The Latest on: Tire recycling
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The Latest on: Tire recycling
- Youngstown City Council Unanimously Votes Against an ‘Untested and Dangerous’ Tire Pyrolysis Planton September 22, 2023 at 2:00 am
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- Tire recycler was once welcomed by countyon September 21, 2023 at 9:23 pm
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A charter bus carrying 40 students and four adults from Farmingdale High School on Long Island to a band camp in Pennsylvania crashed on Interstate 84 just outside of Middletown at 1:12 p.m., police ...
- Longview hosts free tire disposal Saturday in attempt to curb illegal dumping, alleviate costly disposalon September 21, 2023 at 4:00 am
Cost of disposal and access to disposal sites can often lead people to dump tires along places like roads and rivers, or just keep them. In March, the state reports ...
- Harford County Residents Can Drop Off Used Tires for Recycling Starting Monday, Oct.on September 19, 2023 at 10:27 pm
9 Harford County residents can dispose of used tires by dropping them off for recycling from Monday, Oct. 9, 2023, through Friday, Oct. 13, 2023. Up to 10 passenger or light truck tires, on or off the ...
- Amy Brackin, Liberty Tire | Women Breaking the Mold 2023on September 17, 2023 at 6:39 pm
As senior vice president of sustainability, Amy Brackin is responsible for the development and execution of Liberty Tire's recycling strategic vision for sustainability initiatives and goals. She also ...
- ‘Holistic’ Recycling of CFRP Pioneered by Germany’s Pyrumon September 17, 2023 at 5:00 pm
A company specialized in end-of-life tire recycling via pyrolysis has commissioned what it claims is the first automated, semi-industrial recycling plant for carbon-fiber-reinforced plastic (CFRP).
- Around 940 vehicles drop off tires in Montgomery Countyon September 17, 2023 at 1:31 pm
Close to 940 vehicles dropped off tires at an event on Saturday. Montgomery County Environmental Services hosted the Tire Buy Back at the Montgomery County Transfer and Recycling Facility from 9 a.
- Tire Recycling Market Share Research Report [2023-2030] | 107 Pageson September 16, 2023 at 3:41 am
360 Research Reports has published a new report titled as "Tire Recycling Market" by End User (Cement Manufacturing, Tire-derived Products, Tire Pyrolysis, Repurposing), Types (TYPE1), Region and ...
- Need to recycle tires, appliances electronics and more? Portage County to open centeron September 15, 2023 at 5:08 am
Computers, tires, plastic bags, batteries and cooking oil can soon be recycled in Portage County, thanks to the opening of the Center for Hard to Recycle Material. The CHaRM center is located at the ...
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