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
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The Latest on: Generating power from waste heat
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Kanin Energy, with whom Tallgrass has collaborated on the system, says it specializes in turning industrial waste heat into clean electricity, boosting energy efficiency. Under the agreement, AES Ohio ...
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Tallgrass, the University of Dayton, and AES Ohio entered into an innovative long-term agreement that fosters the University of Dayton’s efforts to achieve their renewable energy goals. The new waste ...
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Combined Heat and Power Market is expected to reach USD 39.2 billion by 2029 from USD 30.4 billion in 2024 at a CAGR of 5.2% during the forecast period according to a new report by MarketsandMarkets™.
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Cogeneration systems, aka combined heat and power (CHP), simultaneously generate electricity and use the waste heat for heating or cooling purposes. Cogeneration maximizes the overall energy ...
- Experts reveal sustainable approach to generate power from waste woodon February 14, 2024 at 9:54 pm
The study shows the effective generation of electricity utilizing ... The researchers found that these membranes may transform waste heat into electricity by harnessing the movement of charged ...
- This Tire Transforms Heat into Poweron January 17, 2024 at 9:10 am
This innovative tire, although presented at the 85th Geneva International Motor Show in 2015, is designed to generate ... heat into electricity, addressing the inefficiency of cars that typically ...
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