Researchers from Queen Mary University of London have developed new thermoelectric materials, which could provide a low-cost option for converting heat energy into electricity.
Materials known as halide perovskites have been proposed as affordable alternatives to existing thermoelectric materials, however so far research into their suitability for thermoelectric applications has been limited.
In this study, published in Nature Communications, scientists conducted a series of experiments on thin films of the halide perovskite, caesium tin iodide, to test its ability to create electrical current from heat. The researchers found they were able to improve the materials’ thermoelectric properties through a combination of methods, which involved partial oxidation and the introduction of additional elements into the material.
Improving thermoelectric performance
Dr Oliver Fenwick, lead Royal Society University Research Fellow and Lecturer in Materials Science at Queen Mary University of London, said: “For many years halide perovskites have been suggested as promising thermoelectric materials, but whilst simulations have suggested good thermoelectric properties real experimental data hasn’t met these expectations.
“In this study, we successfully used ‘doping’ techniques, where we intentionally introduce impurities into the material, to tweak and improve the thermoelectric properties of caesium tin iodide, opening up options for its use in thermoelectric applications.”
This work was conducted in collaboration with researchers from University College London and CNR Bologna, Italy
Sustainable approach to energy production
Thermoelectric materials use temperature differences to generate electrical energy. They have been suggested as a promising sustainable approach to both energy production and recycling, as they can be used to convert waste heat into useful electricity. However, current widely-used thermoelectric materials are costly to produce and process, which has limited the uptake of this greener technology.
Dr Fenwick, said: “With the heightened global awareness of climate change and realisation that a number of renewable energy solutions will be needed to meet our energy demands, thermoelectric generators are now at the centre stage in today’s “green technology” debate.”
“The thermoelectric materials we currently have are expensive, and some even contain toxic components. One of the largest growth areas for thermoelectric technology is for domestic, commercial or wearable applications, so there’s a need to find cheaper, non-toxic thermoelectric materials that can also operate well at low temperatures, for these applications to be fully realised. Our research suggests the halide perovskites could, with some fine-tuning, fill this void.”
Go deeper with Bing News on:
- Doctoral Students Recognized for Aerospace Researchon November 27, 2020 at 7:24 am
Two UCF doctoral candidates are being recognized for their efforts in advancing human space exploration. NASA awarded Yuen Yee Li Sip a three-year fellowship to support her research project on ...
- Thermoelectric Generator (Teg) Modules Market Size, Share Report 2020 Shipments, Price, Revenue and Gross profit till 2025 With Impact of COVID-19on November 25, 2020 at 4:42 am
Final Report will add the analysis of the impact of COVID-19 on this industry." “Thermoelectric Generator (Teg) ...
- The Deep Space Energy Crisis Could Soon Be Overon November 23, 2020 at 4:00 pm
That’s where radioisotope thermoelectric generators (RTGs ... fuel is pressed into pellets that are covered with protective materials. The fuel is nestled into a container called the heat ...
- DoE Finds New Way to Turn Waste Heat Into Energy for Portable Electronics, Wearableson November 23, 2020 at 4:00 pm
Specifically, the team’s research demonstrated that there is potential to use SWCNTs as the primary material for efficient thermoelectric generators, rather than being used merely as a component in a ...
- Micro Thermoelectric Modules Market Size, Status and Global Outlook During 2020 to 2026 Along With Covid-19 Impact Analysison November 22, 2020 at 1:37 am
Thermoelectric generators (TEGs ... Information and Communication Technology (ICT), Technology and Media, Chemicals, Materials, Energy, Heavy Industry, etc. MarketInsightsReports provides global ...
Go deeper with Google Headlines on:
Go deeper with Bing News on:
Converting heat energy into electricity
- Atlanta Inno: Charityvest raises $2.3M; Super Soaker inventor raises $1.5Mon November 27, 2020 at 3:00 am
Erin Schilling's reporter's notebook includes funding info on a donation platform run by Atlanta fintech startup Vennfi and for a startup led by inventor Lonnie Johnson.
- JTEC Energy Closes Seed Roundon November 18, 2020 at 4:36 am
JTEC Energy, Inc. announced it closed on an initial seed fundraising round. "We set an initial goal of raising $1 million," said JTEC CEO ...
- More efficient conversion of heat into electricity by tinkering with nanostructureon November 16, 2020 at 5:06 am
Thermoelectric materials convert heat into electricity, which makes them extremely attractive for sustainable energy production, especially given that industry can waste more than two-thirds of its ...
- Turning heat into power with efficient organic thermoelectric materialon November 11, 2020 at 11:15 am
are powered by generators that convert heat (in this case, provided by a radioactive source) into an electric current. "The great thing about such generators is that they are solid-state devices ...
- Turning heat into electric power with efficient organic thermoelectric materialon November 10, 2020 at 4:00 pm
are powered by generators that convert heat (in this case, provided by a radioactive source) into an electric current. 'The great thing about such generators is that they are solid-state devices ...