Doped tin oxide aerogels as oxygen evolution reaction catalyst supports

Solà-Hernández, Lluís; Claudel, Fabien; Maillard, Frédéric; Beauger, Christian

doi:10.1016/j.ijhydene.2019.07.152

Cited by 30 publications

(44 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering the supported IrO x materials, no significant difference is observed in the polarization curves of the ATO‐, FTO‐, and ITO‐supported catalysts and that of the IrO x /SnO 2 material, which is most likely related to the gain in electrical conductivity caused by the deposition of the IrO x nanoparticles on the SnO 2 (Table S4). Similar results were shown recently for IrO x supported on SnO 2 , Sb‐SnO 2 , and Ta‐SnO 2 catalysts [27] …”

Section: Discussionmentioning

confidence: 99%

“…First, depending on the synthesis method, strong metal‐support interaction (SMSI) may occur, [33] although it is still to be proven if SMSI is indeed beneficial for activity or stability of tin oxides. Second, other dopants, like tantalum, which show higher stability, [27] must be further explored. Finally, the conclusions drawn for the performance of catalysts or supports in aqueous RDE and SFC environment may not be always extrapolated to real PEMWE [27,35] .…”

Section: Discussionmentioning

confidence: 99%

“…Second, other dopants, like tantalum, which show higher stability, [27] must be further explored. Finally, the conclusions drawn for the performance of catalysts or supports in aqueous RDE and SFC environment may not be always extrapolated to real PEMWE [27,35] . In particular, concerning the difference in conductivity, for thicker catalyst layers significant potential losses are expected.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Oxygen Evolution Reaction on Tin Oxides Supported Iridium Catalysts: Do We Need Dopants?

et al. 2020

View full text Add to dashboard Cite

Application of oxide supports is considered as a viable approach to decrease iridium loading in oxygen evolution reaction catalysis in acid electrolyte. While the most of the promising oxides are poor conductors, the need for doping is typically taken as granted, and a representative example is tin dioxide. There are still, however, serious concerns on the feasibility of this approach as we lack consensus on any activity gain by using such oxides, while doubts on stability are numerous. In this work, a set of catalyst/support combinations including two catalysts, viz. hydrous (IrO x ) and rutile (IrO 2 ) iridium oxides, and four supports, viz. SnO 2 and Sb-(ATO), F-(FTO), and In-doped (ITO) SnO 2 , are synthesized and character-ized by a selection of complementary experimental techniques including rotating disk electrode and on-line inductively coupled plasma mass spectrometry. It is found that the electrochemical activity in acid media of supported Ir catalysts is essentially the same, independent on presence or absence of dopants. Sb and In dopants are shown to be unstable and cause an increased dissolution of Sn. Besides, the degradation of the doped supports results in destabilization of iridium oxides. These results raise doubts on the real need for the use of dopants in SnO 2 -based catalyst supports for electrochemical water splitting.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Oxygen Evolution Reaction on Tin Oxides Supported Iridium Catalysts: Do We Need Dopants?

et al. 2020

View full text Add to dashboard Cite

show abstract

“…[39,40] Recently, a growing number of potential carbon alternatives have been investigated, namely (doped) metal nitrides, [41,42] carbides, [43,44] perovskites, [45] or oxides. [21,22,[46][47][48][49][50][51][52][53][54] Among the latter category, doped tin oxide and doped titanium oxide show the most promise. However, both oxides lack sufficient electrical conductivity, which is still orders of magnitude lower than that of carbon black.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Iridium Nanoparticles’ Oxygen Evolution Reaction Activity and Stability by Adjusting the Coverage of Titanium Oxynitride Flakes on Reduced Graphene Oxide Nanoribbons’ Support

Moriau

Podboršek

Šurca

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…As a matter of fact, the durability of these materials in operation is still not granted, and many groups try to understand the phenomena at stake and to propose more stable materials [8][9] [10] [11] [12] [13]. Conversely, non-platinum-group-metal (PGM) catalysts can be used in alkaline water electrolyzers, leading to cheaper systems and reduced pressures on the availability of their core materials.…”

Section: Introductionmentioning

confidence: 99%

FeNi3 and Ni-Based Nanoparticles as Electrocatalysts for Magnetically Enhanced Alkaline Water Electrolysis

et al. 2020

View full text Add to dashboard Cite

Today, hydrogen mainly originates from fossil sources (gas, oil and coal). Room temperature water electrolysis is an interesting alternative for renewable electricity storage, even if it is well-known that high-temperature systems are more efficient. To address this issue, we studied different non-platinum group metals (non-PGM) catalysts for alkaline Oxygen Evolution Reaction (OER) and Hydrogen Evolution Reaction (HER) by recording cyclic voltamperograms with a rotating disk electrode set up. Physicochemical characterizations of Ni-based and FeNi3-based catalysts were performed using transmission electron microscopy, X-ray Diffraction (XRD) and inductively coupled plasma mass spectroscopy (ICP-MS). Ni synthesized by the hot injection method is a good catalyst for HER, yet still less active than Pt/C. FeNi3 with and without a Ni surface doping are very good OER catalysts, slightly better than commercial unsupported IrO2. Electrochemical tests under alternating magnetic field (AMF) using these nanoparticles are ongoing, as these materials are compatible with AMFactivation.

show abstract

Doped tin oxide aerogels as oxygen evolution reaction catalyst supports

Cited by 30 publications

References 53 publications

Oxygen Evolution Reaction on Tin Oxides Supported Iridium Catalysts: Do We Need Dopants?

Oxygen Evolution Reaction on Tin Oxides Supported Iridium Catalysts: Do We Need Dopants?

Enhancing Iridium Nanoparticles’ Oxygen Evolution Reaction Activity and Stability by Adjusting the Coverage of Titanium Oxynitride Flakes on Reduced Graphene Oxide Nanoribbons’ Support

FeNi3 and Ni-Based Nanoparticles as Electrocatalysts for Magnetically Enhanced Alkaline Water Electrolysis

Contact Info

Product

Resources

About