Chinese Journal of Space Science, Journal Year: 2025, Volume and Issue: 45(2), P. 1 - 1
Published: Jan. 1, 2025
Language: Английский
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 30, 2024
Abstract This perspective provides an overview of the state research and innovation in areas magnetocaloric pyromagnetic materials, electrocaloric pyroelectric including overlapping sub‐areas multicaloric multipyro materials that can operate simultaneously under application magnetic electric fields. These are critically examined for their potential to revolutionize cooling, heating, energy‐harvesting applications. first summarizes state‐of‐the‐art advancements highlights recent significant developments. Then, it is identified discussed prevailing challenges hindering widespread adoption technologies based on these materials. In this context, after consulting with members caloric pyro communities, a technology roadmap outlined guide efforts overcoming current barriers applications, goal achieving impactful results by 2040. emphasizes importance focusing under‐researched novel devices, spaces, paving way interdisciplinary lead reductions carbon dioxide emissions.
Language: Английский
Citations
39
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(21)
Published: March 29, 2024
Abstract Solid‐state caloric effects as intrinsic thermal responses to different physical external stimuli (magnetic‐, uniaxial stress‐, pressure‐, and electric‐fields) can achieve a higher energy efficiency compared with traditional gas compression techniques. Among these effects, magnetocaloric conversion is regarded the best available alternative has been exploited extensively for promising application scenarios in last decades. This review systematically introduces effect its applications, summarizes corresponding representative materials, well important progress recent years. Specifically, focuses on some key understandings of by utilizing state‐of‐the‐art technical tools such synchrotron X ‐ray, neutron scattering, muon spin spectroscopy, positron annihilation high magnetic fields, etc., highlights their importance toward advanced materials design development. An overview basic principles applications techniques provided. Finally, challenges perspectives further developments this field are discussed. Further in‐depth understanding manufacturing technology advancement combined fast‐developed artificial intelligence machine learning expected advance closer real applications.
Language: Английский
Citations
38
Nature, Journal Year: 2024, Volume and Issue: 629(8014), P. 1041 - 1046
Published: May 8, 2024
Language: Английский
Citations
20
Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(15)
Published: June 12, 2024
Abstract Advanced design methods and manufacturing techniques are crucial for developing thermal management structures, essential the efficient operation of complex equipment. This study provides a thorough review methodologies advanced technologies materials structures. It identifies key challenges critically evaluates integration innovative principles, such as biomimicry topology optimization, into solutions. The analysis delves evolution theories preparation techniques, with specific focus on modern needs research directions, particularly highlighting components fabricated using additive their effectiveness in meeting requirements. Current focuses designing structures tailored to various cooling methods, including air‐cooling, liquid‐cooling, heat exchanger cooling, pipe cooling. These designs utilize phase change materials, electrocaloric thermoelectric achieve optimal performance. Additionally, emerging innovations like solid‐liquid mixed transfer elastocaloric effect garnering increased interest. Enhancing through rigorous numerical simulations is critical improving engineering applicability. However, overcoming related commercialization practical utilization these remains pressing need.
Language: Английский
Citations
10
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Aug. 6, 2024
Thermal management emerges as a grand challenge of next-generation electronics. Efforts to develop compact, solid-state cooling devices have led the exploration electrocaloric effect ferroelectric polymers. Despite recent advances, applications polymers on electronics operating at elevated temperatures remain essentially unexplored. Here, we report that polymer composite composed highly-polarized barium strontium titanate nanofibers and electron-accepting [6,6] phenyl-C61-butyric acid methyl ester retains fast responses stable cyclability temperatures. We demonstrate effectiveness in for pyroelectric energy harvesting device. The device utilizes simulated central processing unit (CPU) heat source. Our results show remains operational even when CPU is overheated. Furthermore, functions simultaneously converter harvest thermal from an overheated chip into electricity process. This work suggests distinct approach overheating protection recycling waste microelectronics. Application elascocaloric materials compact temperature challenging. study introduces which shows rapid under high temperature. An harvester demonstrated normally with CPU.
Language: Английский
Citations
9
Surface and Coatings Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131973 - 131973
Published: Feb. 1, 2025
Language: Английский
Citations
1
Communications Engineering, Journal Year: 2024, Volume and Issue: 3(1)
Published: March 21, 2024
Abstract Electrocalorics (EC) is potentially more efficient than refrigeration and heat pumps based on compressors does not need detrimental fluids. Current EC-prototypes use solid-state contact or forced convection with liquids to transfer the generated from EC-material, which inhibits high cycle frequencies thus limits power density. Here we present a heatpipe system solution, where realized through condensation evaporation of ethanol as fluid. Our prototype lead scandium tantalate (PST) EC-material working at 5 Hz shows specific cooling 1.5 W g −1 . This one order magnitude previously reported for ceramic EC-prototypes. Overcoming slow essential reach powers enabling future commercial success technology.
Language: Английский
Citations
7
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: May 8, 2024
Abstract A key challenge currently for the new ferroelectric refrigeration with high efficiency and environmental friendliness lies in urgent demand materials huge electrocaloric effects (ECE). Ferroelectric polycrystalline ceramics ECE stand out as one of most promising candidates cooling applications. However, grain boundary network, a barrier cross‐transmission charged carriers, widely exists is often neglected favor focusing more on composition regulation structural design. Herein, engineering proposed that regulates Schottky at network Ba 0.8 Zr 0.2 TiO 3 by maneuverable annealing process clarifies its critical role enhancing ceramics. As result, substantial enhancement EC performance (from 0.68 to 1.63 K 50 °C 80 kV cm −1 , ≈2.4 times) has been achieved annealed lower barrier. The microstructural electrical characterization reveals facilitates domain switching electronic transition, hence resulting enhanced polarization response performance.
Language: Английский
Citations
7
Physical Review Letters, Journal Year: 2024, Volume and Issue: 133(11)
Published: Sept. 10, 2024
Solid-state cooling presents an energy-efficient and environmentally friendly alternative to traditional refrigeration technologies that rely on thermodynamic cycles involving greenhouse gases. However, conventional caloric effects face several challenges impede their practical application in devices. First, operational temperature conditions must align closely with zero-field phase-transition points; otherwise, the required driving fields become excessively large. phase transitions occur infrequently near room temperature. Additionally, typically exhibit strong dependence are sizable only within relatively narrow ranges. In this Letter, we employ first-principles simulation methods demonstrate light-driven polar oxide perovskites have potential overcome such limitations. Specifically, for prototypical ferroelectric KNbO_{3} illustrate existence of giant "photocaloric" induced by light absorption (ΔS_{PC}∼100 J K^{-1} kg^{-1} ΔT_{PC}∼10 K) across a vast range hundred Kelvin, encompassing These findings expected be generalizable other materials exhibiting similar behavior.
Language: Английский
Citations
6
Journal of Materiomics, Journal Year: 2024, Volume and Issue: 11(3), P. 100903 - 100903
Published: June 22, 2024
The electrocaloric effect (ECE) offers a pathway to environmentally sustainable and easily miniaturized refrigeration technology, positioning it as front-runner for the next generation of solid-state cooling solutions. This research unveils remarkable ECE in finely tuned (Ba0.86Ca0.14)0.98La0.02Ti0.92Sn0.08O3 ceramic, exhibiting temperature shift (ΔT) 1.6 K across more than 85% maximum ΔT (ΔTmax) spanning an exceptionally wide operational range 92 K. Our investigation on dielectric responses ferroelectric polarization-electric field (P–E) loops suggests that broad scope results from fragmentation extended domains into smaller polar nano-regions (PNRs) supported by PFM analysis. Furthermore, introduction La enhances spontaneous polarization significantly extending electric can be applied, facilitating high-performance at ambient temperature. study positions BaTiO3-based lead-free ceramic alternative addressing demands modern electronic components, marking significant stride toward next-generation refrigeration.
Language: Английский
Citations
4