Understanding the Role of Ferroelastic Domains on the Pyroelectric and Electrocaloric Effects in Ferroelectric Thin Films

Pandya, Shishir; Velarde, Gabriel; Gao, Ran; Everhardt, Arnoud S.; Wilbur, Joshua D.; Xu, Ruijuan; Maher, Josh T.; Agar, Joshua C.; Dames, Chris; Martin, Lane W.

doi:10.1002/adma.201803312

Cited by 38 publications

(38 citation statements)

References 51 publications

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“…As demonstrated, the thickness and the area of PZT sheet played an important role in driving water splitting, where the thickness could be used to guarantee an enough potential to initiate water splitting and the area should be maximized to collect the maximal amount of available surface charge [185]. Therefore, future work could concentrate on the formation of pyroelectric nanostructures to enlarge the surface area of the pyroelectric element or exploring the high heat transfer rates of other pyroelectric materials to increase the magnitude and speed of temperature changes [189][190][191][192].…”

Section: Water Splitting Driven By Other Devicesmentioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

et al. 2020

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HIGHLIGHTS • Bifunctional electrode and electrolytic cell configuration for electrochemical water splitting are reviewed. • The different green energy systems powered water splitting are summarized and discussed. • An outlook of future research prospects for the development of green energy system powered water splitting in practical application process is proposed. ABSTRACT Hydrogen (H 2) production is a latent feasibility of renewable clean energy. The industrial H 2 production is obtained from reforming of natural gas, which consumes a large amount of nonrenewable energy and simultaneously produces greenhouse gas carbon dioxide. Electrochemical water splitting is a promising approach for the H 2 production, which is sustainable and pollution-free. Therefore, developing efficient and economic technologies for electrochemical water splitting has been an important goal for researchers around the world. The utilization of green energy systems to reduce overall energy consumption is more important for H 2 production. Harvesting and converting energy from the environment by different green energy systems for water splitting can efficiently decrease the external power consumption. A variety of green energy systems for efficient producing H 2 , such as two-electrode electrolysis of water, water splitting driven by photoelectrode devices, solar cells, thermoelectric devices, triboelectric nanogenerator, pyroelectric device or electrochemical water-gas shift device, have been developed recently. In this review, some notable progress made in the different green energy cells for water splitting is discussed in detail. We hoped this review can guide people to pay more attention to the development of green energy system to generate pollution-free H 2 energy, which will realize the whole process of H 2 production with low cost, pollution-free and energy sustainability conversion.

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Section: Water Splitting Driven By Other Devicesmentioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

et al. 2020

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“…Increasing the power density of the device often necessitates the application of high electric fields that also tend to dampen first-order transitions. Direct measurements of the PE have also shown a reduction in the PEC at low electric fields for polydomain thin films and that nonintrinsic effects can have the same order of magnitude as intrinsic effects 15,16 . Temperature perturbations change the polar structure/ order not only at a unit-cell level (i.e., the intrinsic response) but also at a mesoscopic level (e.g., domain structures).…”

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confidence: 97%

New approach to waste-heat energy harvesting: pyroelectric energy conversion

et al. 2019

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Harvesting waste heat for useful purposes is an essential component of improving the efficiency of primary energy utilization. Today, approaches such as pyroelectric energy conversion are receiving renewed interest for their ability to turn wasted energy back into useful energy. From this perspective, the need for these approaches, the basic mechanisms and processes underlying their operation, and the material and device requirements behind pyroelectric energy conversion are reviewed, and the potential for advances in this area is also discussed.

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“…Large susceptibilities in the PbZr 1− x Ti x O 3 system have historically been attained by selecting materials in the compositional vicinity of the morphotropic phase boundary 30–32. This typically comes as a trade‐off with saturation polarization, as polarization diminishes and susceptibility rises at the phase transition.…”

Section: Dielectric Rayleigh Parameters Of Various Superlattice Filmsmentioning

confidence: 99%

Large Polarization and Susceptibilities in Artificial Morphotropic Phase Boundary PbZr₁₋_xTi_xO₃ Superlattices

Lupi

Ghosh

Saremi

et al. 2020

Adv Elect Materials

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The ability to produce atomically precise, artificial oxide heterostructures allows for the possibility of producing exotic phases and enhanced susceptibilities not found in parent materials. Typical ferroelectric materials either exhibit large saturation polarization away from a phase boundary or large dielectric susceptibility near a phase boundary. Both large ferroelectric polarization and dielectric permittivity are attained wherein fully epitaxial (PbZr0.8Ti0.2O3)n/(PbZr0.4Ti0.6O3)2n (n = 2, 4, 6, 8, 16 unit cells) superlattices are produced such that the overall film chemistry is at the morphotropic phase boundary, but constitutive layers are not. Long‐ (n ≥ 6) and short‐period (n = 2) superlattices reveal large ferroelectric saturation polarization (Ps = 64 µC cm−2) and small dielectric permittivity (εr ≈ 400 at 10 kHz). Intermediate‐period (n = 4) superlattices, however, exhibit both large ferroelectric saturation polarization (Ps = 64 µC cm−2) and dielectric permittivity (εr = 776 at 10 kHz). First‐order reversal curve analysis reveals the presence of switching distributions for each parent layer and a third, interfacial layer wherein superlattice periodicity modulates the volume fraction of each switching distribution and thus the overall material response. This reveals that deterministic creation of artificial superlattices is an effective pathway for designing materials with enhanced responses to applied bias.

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Understanding the Role of Ferroelastic Domains on the Pyroelectric and Electrocaloric Effects in Ferroelectric Thin Films

Cited by 38 publications

References 51 publications

Water Splitting: From Electrode to Green Energy System

Water Splitting: From Electrode to Green Energy System

New approach to waste-heat energy harvesting: pyroelectric energy conversion

Large Polarization and Susceptibilities in Artificial Morphotropic Phase Boundary PbZr₁₋_xTi_xO₃ Superlattices

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Understanding the Role of Ferroelastic Domains on the Pyroelectric and Electrocaloric Effects in Ferroelectric Thin Films

Cited by 38 publications

References 51 publications

Water Splitting: From Electrode to Green Energy System

Water Splitting: From Electrode to Green Energy System

New approach to waste-heat energy harvesting: pyroelectric energy conversion

Large Polarization and Susceptibilities in Artificial Morphotropic Phase Boundary PbZr1−xTixO3 Superlattices

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Large Polarization and Susceptibilities in Artificial Morphotropic Phase Boundary PbZr₁₋_xTi_xO₃ Superlattices