Nanoionics and interfaces for energy and information technologies

Chiabrera, Francesco; Garbayo, Íñigo; Tarancón, Albert

doi:10.1016/b978-0-12-811166-6.00017-0

Cited by 6 publications

(4 citation statements)

References 145 publications

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“…[129] Space-charge situations have been intensively investigated in a number of ionic and mixed ionicelectronic conductors (extensive reviews can be found in ref. [65,130,131]). In most cases of technological relevance, such as perovskites and fluorite-based materials, [128,[132][133][134] grain boundary cores have been found to be positively charged, i.e.…”

Section: Space Chargementioning

confidence: 99%

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Engineering mass transport properties in oxide ionic and mixed ionic-electronic thin film ceramic conductors for energy applications

Garbayo

Baiutti

Morata

et al. 2019

Journal of the European Ceramic Society

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New emerging disciplines such as Nanoionics and Iontronics are dealing with the exploitation of mesoscopic size effects in materials, which become visible (if not predominant) when downsizing the system to the nanoscale. Driven by the worldwide standardisation of thin film deposition techniques, the access to radically different properties than those found in the bulk macroscopic systems can be accomplished. This opens up promising approaches for the development of advanced micro-devices, by taking advantage of the nanostructural deviations found in nanometre-sized, interface-dominated materials compared to the "ideal" relaxed structure of the bulk. A completely new set of functionalities can be explored, with implications in many different fields such as energy conversion and storage, or information technologies. This manuscript reviews the strategies, employed and foreseen, for engineering mass transport properties in thin film ceramics, with the focus in oxide ionic and mixed ionic-electronic conductors and their application in micro power sources.

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Section: Space Chargementioning

confidence: 99%

“…Types of interfaces in ceramic oxide films: Homointerfaces, i.e. grain boundary-dominated materials (a,d)[65] and heterointerfaces, viz. multilayers (b,e)[66] and vertically aligned nanocomposite structures (VANs) (c,f) [67].…”

mentioning

confidence: 99%

Engineering mass transport properties in oxide ionic and mixed ionic-electronic thin film ceramic conductors for energy applications

Garbayo

Baiutti

Morata

et al. 2019

Journal of the European Ceramic Society

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“…Mushtaq et al reported a mixed electron ion-conducting semiconductor-ionic SrFe 0.75 Ti 0.25 O 3‑δ -SDC electrolyte in the fuel cell with high ionic conductivity (>0.1 S cm –1 ), which resulted in a remarkable power output of 0.92 W cm –2 at a low operational temperature of 520 °C, and many others are reported . Moreover, Yang et al have reported one order of magnitude enhancement in the ionic conduction via formation of the heterostructure of vertical nanocolumns using Sm 0.25 Ce 0.75 O 2‑δ (SDC) and SrTiO 3‑δ as compared to individual ionic conductor SDC. , Hence, the construction of an artificial heterostructure based on currently developed materials amalgamated with present developments created new pathways and extended the number of semiconductor heterojunctions and superlattices to assist the transport of oxide ions . Therefore, to pursue this concept, a p–n heterojunction in bulk was studied based on nano-redox at particles and nano-fuel cell reactions.…”

Section: Introductionmentioning

confidence: 99%

“…24,25 Hence, the construction of an artificial heterostructure based on currently developed materials amalgamated with present developments created new pathways and extended the number of semiconductor heterojunctions and superlattices to assist the transport of oxide ions. 26 Therefore, to pursue this concept, a p−n heterojunction in bulk was studied based on nano-redox at particles and nano-fuel cell reactions. The p−n heterojunction plays a crucial role in the separation of the electron−hole pairs via the formation of the internal electric field.…”

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confidence: 99%

Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi_0.8Co_0.15Al_0.05O₂–Sm_0.2Ce_0.8O_2-δ Heterostructure for Fast Ionic Transport

Tayyab

Rauf

Chen

et al. 2021

ACS Appl. Energy Mater.

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Formation of a heterostructure of semiconductor materials is a promising method to develop an electrolyte with high ionic conductivity at low operational temperature of solid oxide fuel cells (LT-SOFCs). Herein, we develop various heterostructure composites by introducing a pure ionic conductor Sm 0.2 Ce 0.8 O 2-δ (SDC) into a semiconductor LiNi 0.8 Co 0.15 Al 0.05 O 2 (LNCA) for LT-SOFCs electrolyte. The morphology, crystal structure, elemental distribution, micro-structure, and oxidation states of the composite of LNCA−SDC are analyzed and studied via X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), high resolution-transmission electron microscopy (HR-TEM), high energy dispersive spectrometry, and X-ray photoelectron spectroscopy (XPS). Electrochemical studies found that the optimal weight ratio of 0.5 LNCA-1.5 SDC heterostructure composite exhibits relatively high ionic conductivity (0.12 S cm −1 at 520 °C), which is much higher than that of SDC. The designed composite of LNCA-SDC heterostructures with optimal weight ratio (0.5:1.5) delivers a remarkable fuel cell power output of 0.735 W cm −2 at 520 °C. The formation of the heterostructure and reconstruction of energy bands at the interface play the crucial roles in enhancing ionic conduction to improve electrochemical performance. The prepared composite heterostructure delivers a unique and insightful strategy of electrolyte in advanced LT-SOFCs.

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Nanostructured Materials and Interfaces for Advanced Ionic Electronic Conducting Oxides

Acosta

Baiutti

Tarancón

et al. 2019

Adv Materials Inter

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Mixed ionic electronic conductors (MIEC) are pivotal materials in a number of electrochemical devices which are relevant for clean energy technologies and industrial chemical processes. In this report progress, we provide an overview of the recent strategies to tune surfaces and interfaces of MIEC fluorite and perovskite oxides for solid oxide fuel cells and micro-solid oxide fuel cells electrodes. Most of the works presented focus on salient strategies to improve the oxygen reduction reaction (ORR) and the fuel oxidation reaction kinetics. We provide insights on the current understanding of heterointerfaces in epitaxial thin films and vertically aligned nanocomposites for ORR kinetics. A selection of oxide materials having potential for thin-film anode application is also presented. We further discuss recent salient results in grain boundary engineering and ex-solution as well as strain engineering and photoactivation for the development of advanced electrodes.

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Nanoionics and interfaces for energy and information technologies

Cited by 6 publications

References 145 publications

Engineering mass transport properties in oxide ionic and mixed ionic-electronic thin film ceramic conductors for energy applications

Engineering mass transport properties in oxide ionic and mixed ionic-electronic thin film ceramic conductors for energy applications

Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi_0.8Co_0.15Al_0.05O₂–Sm_0.2Ce_0.8O_2-δ Heterostructure for Fast Ionic Transport

Nanostructured Materials and Interfaces for Advanced Ionic Electronic Conducting Oxides

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Nanoionics and interfaces for energy and information technologies

Cited by 6 publications

References 145 publications

Engineering mass transport properties in oxide ionic and mixed ionic-electronic thin film ceramic conductors for energy applications

Engineering mass transport properties in oxide ionic and mixed ionic-electronic thin film ceramic conductors for energy applications

Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi0.8Co0.15Al0.05O2–Sm0.2Ce0.8O2-δ Heterostructure for Fast Ionic Transport

Nanostructured Materials and Interfaces for Advanced Ionic Electronic Conducting Oxides

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Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi_0.8Co_0.15Al_0.05O₂–Sm_0.2Ce_0.8O_2-δ Heterostructure for Fast Ionic Transport