Data · dataset · 2026
Dual-Modulation Strategy in RuO<sub>x</sub> Improves Activity and Durability in Acidic Oxygen Evolution
Listed in ZivaHub and Deakin Research Online and DMU Figshare — shown once because both records carry DOI 10.1021/jacs.6c12618.s001
Durable oxygen evolution catalysts are needed for proton-exchange-membrane water electrolyzers (PEMWEs) for hydrogen production.
Description
Ruthenium-based oxides offer high activity in acids but suffer from instability under oxidative conditions. Here, we study a dual-modulation approach intended to improve activity and durability together: we couple two functionally distinct dopants, one redox-active dopant that buffers metal overoxidation and one lattice-stabilizing dopant that suppresses structural degradation.
This strategy, studied using operando spectroscopy, isotope labeling, and density functional theory, provides a cooperative suppression of Ru overoxidation and lattice breakdown. Implemented in a Ru–Mn–Ti oxide system, the optimized composition, Ru<sub>0.7</sub>Mn<sub>0.1</sub>Ti<sub>0.2</sub>O<sub><i>x</i></sub>, reaches 143 mV overpotential at 10 mA cm<sup>–2</sup> and enables a proton exchange membrane water electrolyzer device to operate for 800 h at 1 A cm<sup>–2</sup> and 1.66 V with a degradation rate of 0.2 mV h<sup>–1</sup>.
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The approach may be useful for designing other multimetal oxide catalysts. We note that 800 h is short compared to the lifetimes that commercial electrolyzers require, so this work is one contribution along a longer community path rather than a demonstration of commercial durability.
Links
Where it is published
- DOI doi.org/10.1021/jacs.6c12618.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Bioinformatics and computational biology · Bioinformatics and computational biology · Bioinformatics and computational biology · Chemistry · Chemistry · Chemistry · Density functional theory · Density functional theory · Density functional theory · Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Evolutionary biology · Evolutionary biology · Evolutionary biology · Life Sciences · Life Sciences · Life Sciences · Medicine & Health · Medicine & Health · Medicine & Health
Provenance · 3 source records, 26 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34045582 | 5 d ago | JSON v1 |
| Deakin Research Online | oai:figshare.com:article/34045582 | 5 d ago | JSON v1 |
| DMU Figshare | oai:figshare.com:article/34045582 | 5 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
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| concepts[field].anzsrc:group:3102 | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['Computational Biology'] |
| concepts[field].anzsrc:group:3102 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Computational Biology'] |
| concepts[field].anzsrc:group:3104 | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['Evolutionary Biology'] |
| concepts[field].anzsrc:group:3104 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Evolutionary Biology'] |
| concepts[field].anzsrc:group:3104 | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['Evolutionary Biology'] |
| concepts[field].local:field:chemistry | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:chemistry | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:medicine-health | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:medicine-health | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:medicine-health | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[method].local:method:dft | mapping · figshare dmu ac uk | vocabulary-mapper@1.0.0 | keywords['density functional theory'] |
| concepts[method].local:method:dft | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['density functional theory'] |
| concepts[method].local:method:dft | mapping · dro deakin edu au | vocabulary-mapper@1.0.0 | keywords['density functional theory'] |
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| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |