A sprinkling of graphene may conjure a long-sought material into existence
ANY sufficiently advanced technology, as Arthur C. Clarke once observed, is indistinguishable from magic. And one that seems routinely to be ascribed magical properties is graphene. It has been proposed for the manufacture of transistors and light bulbs, as a replacement for bone and a way of delivering drugs, for storing power and for transmitting it, and for lubricating things and waterproofing them. Its latest suggested role, though, is to help turn heat directly into electricity.
The Seebeck effect, first seen in 1821 by a German physicist of that name, is a property of some materials whereby heating part of an object made of that material drives electrons from the hot part to the cold part, creating a current. Generating electricity from heat in this way will never substitute for creating it in a power station specially designed for the purpose but it might, some believe, permit the exploitation of heat that would otherwise go to waste—that produced by car engines, for example; or, indeed, by the power station itself.
The problem is that materials which exhibit a strong enough Seebeck effect to be potentially useful do so only in narrow temperature ranges. One promising candidate is strontium titanium oxide—but it exhibits the effect only when it is heated to between 700° and 750°C. However, two materials scientists, Robert Freer and Ian Kinloch, who work at Manchester University, in Britain, suspected they might be able to extend that range by adding graphene—which, not coincidentally, was discovered at Manchester in 2003. As they report in Applied Materials and Interfaces, they think they have succeeded.
Read more: Generating power from waste heat: Hot stuff
The Latest on: Generating power from waste heat
via Google News
The Latest on: Generating power from waste heat
- An Iron-Based Generator That Uses Waste Heat to Power Small Electrical Deviceson May 11, 2020 at 7:24 pm
Researchers have discovered a way to convert heat energy into electricity by using a material mostly composed of iron.
- Researchers Have Found a New Way to Convert Waste Heat Into Electricity to Power Small Deviceson May 9, 2020 at 10:12 pm
A thin, iron-based generator uses waste heat to provide small amounts of power. Researchers have found a way to convert heat energy into electricity with a nontoxic material. The material is mostly ...
- Researchers find new way to convert waste heat into electricityon May 9, 2020 at 5:00 pm
There’s no such thing as a free lunch, or free energy. But if your energy demands are low enough, say for example in the case of a small sensor of some kind, then there is a way to harness heat energy ...
- Using Hydrogel to Cool Down Electronics and Convert Waste Into Electricityon April 30, 2020 at 2:41 pm
The thin polymer-based hydrogel film can be strapped to batteries to convert heat to electricity. It works by transferring electrons when heated to generate power.
- Cool Down Electronic Devices and Recover Waste Heaton April 29, 2020 at 1:59 pm
But using electronic gadgets for extended periods of time can cause them to overheat, slow down or even damage components. Researchers have developed a hydrogel that promises to both cool down ...
- Waste Heat Recovery System Marketon April 29, 2020 at 5:34 am
Waste Heat Recovery System Market will reach an estimated valuation of USD 99 04 billion by 2027 while registering this growth at a rate of 7 for the forecast period of 2020 to 2027 Growing demand for ...
- CQU academics look at using waste to generate electricityon April 28, 2020 at 3:00 pm
MOST people see a pile of garbage as a problem, but not Central Queensland University academics, who are developing technology to turn waste into gas used to generate electricity. Led by Associate ...
- A New Way to Cool Electronic Devices, Recover Waste Heaton April 23, 2020 at 10:47 am
and convert their waste heat into electricity. Some components of electronic devices, including batteries, light-emitting diodes (known as LEDs) and computer microprocessors, generate heat during ...
- Smarter Alloys' Extract Energy Heat Engine Demonstrates Electricity Generation from Industrial Waste Heaton April 23, 2020 at 7:17 am
"We hosted Smarter Alloys heat engine trials and surprisingly, it generated electricity from the heat in our waste stream that literally goes down the drain." "We were able to use waste heat from ...
- A hydrogel to cool down electronic devices, recover waste heaton April 22, 2020 at 6:22 am
A hydrogel can cool off electronics and generate electricity from their waste heat. Scale bar, 2 cm. (© ACS) Some components of electronic devices, including batteries, light-emitting diodes (known as ...
via Bing News