Exsolution of nickel nanoparticles at the surface of a conducting titanate as potential hydrogen electrode material for solid oxide electrochemical cells

Arrivé, Charline; Delahaye, Thibaud; Joubert, Olivier; Gauthier, Gilles H.

doi:10.1016/j.jpowsour.2012.09.062

Cited by 128 publications

(88 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2a-2c) or after reduction before reaction (RBR) (Fig. S3a-S3c of Supplementary Material), and with the reduction pathway reported by Arrivé et al [22].…”

Section: Accepted Manuscriptsupporting

confidence: 82%

B-cation partial substitution of double perovskite La2NiTiO6 by Co2+: Effect on crystal structure, reduction behavior and catalytic activity

Tuza

Souza

2017

Catalysis Communications

View full text Add to dashboard Cite

“…2a-2c) or after reduction before reaction (RBR) (Fig. S3a-S3c of Supplementary Material), and with the reduction pathway reported by Arrivé et al [22].…”

Section: Accepted Manuscriptsupporting

confidence: 82%

B-cation partial substitution of double perovskite La2NiTiO6 by Co2+: Effect on crystal structure, reduction behavior and catalytic activity

Tuza

Souza

2017

Catalysis Communications

View full text Add to dashboard Cite

“…Literature survey reports single phase LSTN compositions with Ni contents as high as 25 at%, which suggests that also higher contents of surface Ni could be obtained. 6 Microstructural reversibility and thermal stability of the Ni phase Neagu et al 5,21 have shown that exsolution of a metallic phase such as nickel from a titanate perovskite host matrix is possible and that this concept can be used to prepare nanoparticles on the surface. However, it was not shown that this material effect could be used in a reversible manner by reintegrating the metallic phase in the host titanate and to apply this effect repetitively, and on purpose, for microstructural and catalytic self-regeneration.…”

Section: Materials Concept For Novel Sofc Anodesmentioning

confidence: 99%

“…Me ¼ Fe, Ni, Cu, Mn, introduced into the perovskite lattice, were exsoluted from the host matrix, under low oxygen partial pressure, and remain on its surface as catalytically active particles. 5,6 Besides excellent thermal stability at elevated temperatures, a very good electronic conductivity is obtained, which makes them attractive for high temperature electrocatalysis. In this work, we demonstrate a more progressed smart material concept ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Smart material concept: reversible microstructural self-regeneration for catalytic applications

et al. 2016

View full text Add to dashboard Cite

a This paper presents a proof-of-concept study and demonstrates the next generation of a "smart" catalyst material, applicable to high temperature catalysis and electro-catalysis such as gas processing and as a catalyst for solid oxide cells. A modified citrate-gel technique was developed for the synthesis of La x Sr 1À1.5x Ti 1Ày Ni y O 3Àd . This method allowed the synthesis of single phase materials with a high specific surface area, after the first calcination step at temperatures as low as 650 C. Up to 5 at% of nickel could be incorporated into the perovskite structure at this low calcination temperature. X-ray powder diffraction and microscopy techniques have proven the exsolution of nickel nanoclusters under low oxygen partial pressure. The amount of exsoluted nickel nanoparticles was sensitive to surface finishing, whereby much more exsoluted nanoparticles were observed on pre-treated and polished surfaces as compared to original ones. Increasing A-site deficiency leads to a larger number of nickel particles on the surface, indicating a destabilizing influence of the A-site vacancies on the B-site metal cations.Repetitive redox cycles prove that the nickel exsolution and re-integration is a fully reversible process.These materials working in a cyclic and repetitive way may overcome the drawbacks of currently used conventional catalysts used for high temperature systems and overcome major degradation issues related to catalyst poisoning and coarsening-induced aging.

show abstract

“…Nickel nanoparticles are versatile materials and potentially attractive for a large number of applications ranging from batteries [1], catalysis [2,3] and photocatalysis [4], to electro-oxidation [5], magnetic devices [6], medicine [7], fuel cells [8,9], and composite materials of carbon [10] and ceramics [11]. The most common method to prepare nickel nanoparticles is based on solvothermal reduction process, a simple and facile method to control the particle size.…”

Section: Introductionmentioning

confidence: 99%

Novel microwave assisted approach to large scale nickel nanoparticle fabrication

Motuzas¹,

Drobek²,

Costa³

et al. 2014

Chemical Engineering Journal

View full text Add to dashboard Cite

Exsolution of nickel nanoparticles at the surface of a conducting titanate as potential hydrogen electrode material for solid oxide electrochemical cells

Cited by 128 publications

References 34 publications

B-cation partial substitution of double perovskite La2NiTiO6 by Co2+: Effect on crystal structure, reduction behavior and catalytic activity

B-cation partial substitution of double perovskite La2NiTiO6 by Co2+: Effect on crystal structure, reduction behavior and catalytic activity

Smart material concept: reversible microstructural self-regeneration for catalytic applications

Novel microwave assisted approach to large scale nickel nanoparticle fabrication

Contact Info

Product

Resources

About