Journal ArticleDOI
Electrocatalytic Oxygen Evolution Reaction (OER) on Ru, Ir, and Pt Catalysts: A Comparative Study of Nanoparticles and Bulk Materials
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In this article, the intrinsic catalytic activity and durability of carbon supported Ru, Ir, and Pt nanoparticles and corresponding bulk materials for the electrocatalytic oxygen evolution reaction (OER) were examined by surface-sensitive cyclic voltammetry.Abstract:
A comparative investigation was performed to examine the intrinsic catalytic activity and durability of carbon supported Ru, Ir, and Pt nanoparticles and corresponding bulk materials for the electrocatalytic oxygen evolution reaction (OER). The electrochemical surface characteristics of nanoparticles and bulk materials were studied by surface-sensitive cyclic voltammetry. Although basically similar voltammetric features were observed for nanoparticles and bulk materials of each metal, some differences were uncovered highlighting the changes in oxidation chemistry. On the basis of the electrochemical results, we demonstrated that Ru nanoparticles show lower passivation potentials compared to bulk Ru material. Ir nanoparticles completely lost their voltammetric metallic features during the voltage cycling, in contrast to the corresponding bulk material. Finally, Pt nanoparticles show an increased oxophilic nature compared to bulk Pt. With regard to the OER performance, the most pronounced effects of nanosca...read more
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Biomolecule-derived N/S co-doped CNT-graphene hybrids exhibiting excellent electrochemical activities
TL;DR: In this article, a metal-free, hierarchically porous and N/S co-doped CNT-graphene 3D framework was constructed via one-step pyrolysis of the guanine-sulfate and OCNTs.
Journal ArticleDOI
A porous Ru nanomaterial as an efficient electrocatalyst for the hydrogen evolution reaction under acidic and neutral conditions
Samuel Drouet,Samuel Drouet,Jordi Creus,Jordi Creus,Jordi Creus,Vincent Collière,Vincent Collière,Catherine Amiens,Catherine Amiens,Jordi García-Antón,Xavier Sala,Karine Philippot,Karine Philippot +12 more
TL;DR: A porous Ru nanomaterial exhibits high electrocatalytic performance and excellent durability for the hydrogen evolution reaction (HER) under both acidic and neutral conditions.
Journal ArticleDOI
On the Origin of the Improved Ruthenium Stability in RuO2–IrO2 Mixed Oxides
Journal ArticleDOI
Metal-organic framework-derived core-shell-structured nitrogen-doped CoCx/FeCo@C hybrid supported by reduced graphene oxide sheets as high performance bifunctional electrocatalysts for ORR and OER
Hengyi Fang,Taizhong Huang,Yue Sun,Baotao Kang,Dong Liang,Shuo Yao,Jiemei Yu,M. Mayilvel Dinesh,Si Wu,Jin Yong Lee,Jin Yong Lee,Shun Mao +11 more
TL;DR: In this article, a core-shell-structured nitrogen-doped Co3[Co(CN)6]2/reduced graphene oxide (rGO) hybrid was proposed for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).
Journal ArticleDOI
A-site Excessive (La0.8Sr0.2)1+xMnO3 Perovskite Oxides for Bifunctional Oxygen Catalyst in Alkaline Media
Weichuan Xu,Nicholas Apodaca,Haizhen Wang,Litao Yan,Gen Chen,Meng Zhou,Dong Ding,Pabitra Choudhury,Hongmei Luo +8 more
TL;DR: A-site excessive perovskite oxides have been synthesized by the polymer-assisted chemical solution (PACS) me... as mentioned in this paper, i.e., LSM, LS1.05M, and LS 1.1M.
References
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Journal ArticleDOI
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