An international team of scientists, including a professor of chemistry from the University of Bristol, has worked out a way to improve energy storage devices called supercapacitors, by designing a new class of detergents chemically related to laxatives.
Their paper, published today in the journal Nature Materials, explains why these detergents, called ionic liquids, are better electrolytes than current materials and can improve supercapacitors.
Currently, aqueous and organic electrolytes are used, but more recently, researchers and manufacturers have been testing ionic liquids instead to boost performance.
Although ionic liquids are salts, at room temperature they are surprisingly not crystalline solids – as their name suggests they are in fact liquids.
This gives ionic liquids numerous advantages over conventional electrolytes because they are stable, non-flammable, and often much more environmentally friendly.
To explore the exciting potential offered by ionic liquids for emerging electrochemical technologies the authors designed a new set of highly efficient detergent-like ionic liquid electrolytes and explained how they work at electrode surfaces.
Understanding how they operate will help design even more efficient devices for storing electrical energy.
Professor Julian Eastoe, from the University of Bristol’s School of Chemistry, is a co-author of the study. He said: “To make this discovery required a team of scientists with a very diverse skill set, spanning chemical synthesis, advanced structural, microscopy and electrical techniques as well as computational methods.
“This work demonstrates the power of scientific research ‘without borders’, the groups from different nations contributed their own expertise to make ‘the whole greater than the sum of parts’.”
Co-author, Xianwen Mao, from the Massachusetts Institute of Technology (MIT), added: “We engineered a new class of ionic liquids that can store energy more efficiently.
“These detergent-like ionic liquids can self-assemble into sandwich-like bilayer structures on electrode surfaces. And that is very reason why they give better energy storage performance.”
Typically, for electrolytes in contact with a charged electrode, the distribution of ions is dominated by electrostatic Coulombic interactions.
However, this distribution can be controlled by making the ionic liquids soap-like, or amphiphilic, so that the molecules now have separate polar and non-polar domains, exactly like common detergents.
These soap-like electrolytes then spontaneously form bilayer structures on the electrode surfaces, leading to much improved energy storage capabilities. The researchers found that temperature and applied voltage also affect the energy storage performance.
This new class of electrolytes may be suitable for challenging operations, such as oil drilling and space exploration, but they may also pave the way to new and improved supercapacitors in hybrid cars.
These devices are essential components in modern hybrid cars and can outperform batteries in terms of higher power and better efficiency.
This is particularly the case during regenerative braking where mechanical work is turned into electrical energy, which can be stored quickly in supercapacitors ready to be released.
This reduces energy consumption and is much more environmentally friendly. More importantly, using the new electrolytes such as developed in this study, future supercapacitors may even be able to store more energy than batteries, potentially replacing batteries in applications such as electrical vehicles, personal electronics, and grid-level energy storage facilities.
Learn more: Supercapacitors turbocharged by laxatives
The Latest on: Supercapacitors
via Google News
The Latest on: Supercapacitors
- Europe Graphene for Supercapacitors Market will take the highest jump during 2020-2025on March 22, 2020 at 3:01 am
This research study on the Graphene for Supercapacitors market enumerates details about this industry in terms of a detailed evaluation and also an in-depth assessment of this business. The Graphene ...
- Supercapacitor could be the key to wearableson March 20, 2020 at 3:53 am
According to Matter science journal, which we get for its spot the proton competition, the supercapacitors do not exhibit any wear and tear from being stretched repeatedly and lose only a few ...
- Top Players in Graphene For Supercapacitors Market 2020 - Graphene Technologies, Graphage, Nanoinnova, Tanyuan, Grafen, Allightec COon March 20, 2020 at 1:53 am
Graphene For Supercapacitors Market Report covers Regional Segment Analysis, Type, Application, Major Players, Industry Chain Analysis, Competitive Insights and Macroeconomic Analysis. Get Free PDF ...
- Stretchable supercapacitors to power tomorrow's wearable deviceson March 19, 2020 at 12:01 pm
Also unlike batteries, supercapacitors are able to discharge their energy in short but massive bursts, rather than through a long, slow trickle. They can also charge and discharge much faster than a ...
- Stretchable supercapacitors to power tomorrow's wearable deviceson March 19, 2020 at 11:20 am
Also unlike batteries, supercapacitors are able to discharge their energy in short but massive bursts, rather than through a long, slow trickle. They can also charge and discharge much faster than ...
- Automotive Supercapacitors Market to Gain Traction in the Next Few Yearson March 16, 2020 at 6:04 pm
LOS ANGELES, March 16, 2020 (GLOBE NEWSWIRE) -- The global automotive supercapacitors market is bifurcated into product type, end use, and region. Supercapacitors have high power and long shelf life ...
- Automotive Supercapacitors Market to Gain Traction in the Next Few Yearson March 16, 2020 at 6:03 pm
LOS ANGELES, March 16, 2020 (GLOBE NEWSWIRE) -- The global automotive supercapacitors market is bifurcated into product type, end use, and region. Supercapacitors have high power and long shelf ...
- High-density hybrid powercapacitors: A new frontier in the energy raceon March 9, 2020 at 11:22 pm
The Toomen team made a hell of a claim, saying they'd managed to manufacture powerful supercapacitors with the energy density of lithium batteries. "Of course, that's an unbelievable claim," Verhulst ...
- Biocompatible Mesoporous Hollow Carbon Nanocapsules for High Performance Supercapacitorson March 9, 2020 at 10:47 am
Supercapacitors have drawn increasing attention due to their high power density, fast charge/discharge capability, long cycle life, low cost and environmental friendliness among various ...
via Bing News