The enhanced electrochemical response of Sr(Ti0.3Fe0.7Ru0.07)O3−δ anodes due to exsolved Ru–Fe nanoparticles

Glaser, Rebecca; Zhu, Tenglong; Troiani, Horacio Esteban; Caneiro, A.; Mogni, L.; Barnett, Scott A.

doi:10.1039/c7ta10762e

Cited by 50 publications

(26 citation statements)

References 31 publications

(64 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, noble metals can be paired with base metals like Ni and Fe mainly, in order to boost the catalytic activity of base metals [6e, 31] . Pt−Ni alloy (Pt 3 Ni) nanoparticles were exsolved from La 0.9 Mn 0.9 Pt 0.075 Ni 0.025 O 3‐δ and the newly exsolved material exhibited enhanced activity for oxygen reduction reaction (ORR) comparable to that of the commercial catalyst Pt/C, but also higher stability over Pt/C.…”

Section: Bimetallic Alloy Nanoparticle Systemsmentioning

confidence: 99%

“…Additionally, Ru−Fe alloy nanoparticles were reported to exsolve from a Sr(Ti 0.3 Fe 0.7 Ru 0.07 )O 3‐δ in a SOFC anode resulting in lower polarization resistance and higher maximum power density especially at low temperatures and hydrogen partial pressures, as compared to the cell using the Ru‐free perovskite anode. This was attributed to the promoting effect of the exsolved Ru−Fe nanoparticles on hydrogen adsorption which was the rate limiting step for the Ru‐free anode [31] …”

Section: Bimetallic Alloy Nanoparticle Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Trends and Prospects of Bimetallic Exsolution

Tang

Kousi

Neagu

et al. 2021

Chemistry A European J

View full text Add to dashboard Cite

Supported bimetallic nanoparticles used for various chemical transformations appear to be more appealing than their monometallic counterparts, because of their unique properties mainly originating from the synergistic effects between the two different metals. Exsolution, a relatively new preparation method for supported nanoparticles, has earned increasing attention for bimetallic systems in the past decade, not only due to the high stability of the resulting nanoparticles but also for the potential to control key particle properties (size, composition, structure, morphology, etc.). In this review, we summarize the trends and advances on exsolution of bimetallic systems and provide prospects for future studies in this field.

show abstract

Section: Bimetallic Alloy Nanoparticle Systemsmentioning

confidence: 99%

Section: Bimetallic Alloy Nanoparticle Systemsmentioning

confidence: 99%

Trends and Prospects of Bimetallic Exsolution

Tang

Kousi

Neagu

et al. 2021

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…Furthermore, defect rich perovskites used as anodes are mixed ion-electron conductors, which is immensely beneficial for this kind of application. Examples of utilized systems are Sr 0.95 (Ti 0.3 Fe 0.63 Ni 0.07 )O 3-δ , where exsolution of Ni 0.5 Fe 0.5 nanoparticles could be observed [32], or Sr(Ti 0.3 Fe 0.7 Ru 0.07 )O 3-δ , where Ru 1-x Fe x particles were found [33]. In both cases, exsolved particles significantly reduced anode polarization resistance.…”

Section: Applicationsmentioning

confidence: 99%

Exsolution Catalysts—Increasing Metal Efficiency

et al. 2021

View full text Add to dashboard Cite

Exsolution catalysts are perovskite oxide-based materials that can exsolve catalytically active dopant elements as nanoparticles covering the surface, while the perovskite backbone can act as a stable support material. Thus, under proper conditions, a highly catalytically active and stable catalyst surface can be achieved. For many catalytic materials, precious metals or non-abundant elements play a key role in high catalytic activity. As these elements are often expensive or their supply is ecologically and ethically problematic, the replacement, or at the least reduction in the necessary amount used, is a common aim of current research. One strategy to do so is utilizing exsolution catalysts, as the active elements can be very selectively exsolved, and hence only very small doping amounts are sufficient for excellent results. This approach enables catalyst design with very high active metal efficiency.

show abstract

“…Several studies have already shown that the performance of established SOFC electrodes can be improved by doping with additional catalytically active elements. For example, studies on SrTi x Fe 1− x O 3− δ revealed positive effects of Co, 70 Ni 71,72 or Ru 73 doping on the polarisation resistance of the electrode and showed increased long term stability. Similar effects were found on La 1− x Sr x CrO 3− δ after doping with Ru or Ni.…”

Section: Introductionmentioning

confidence: 99%