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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Bi-functionality of samarium- and praseodymium-based perovskite catalysts for oxygen reduction and oxygen evolution reactions in alkaline medium
TL;DR: In this article, the performance of the perovskite phase of PrNixCo1-xO3-δ was stabilized at x 0.1, 0.5, and 0.9 in the entire temperature range (of 700, 900, and 1200°C).
Journal ArticleDOI
Self-supported molybdenum doping Ni3S2 nanoneedles as efficient bifunctional catalysts for overall water splitting
TL;DR: In this paper, self-supported Mo-doped Ni3S2/NF nanoneedles were successfully assembled via a facile one-step hydrothermal method and used as a bifunctional electrocatalyst.
Journal ArticleDOI
Carbon nanobowls supported ultrafine iridium nanocrystals: An active and stable electrocatalyst for the oxygen evolution reaction in acidic media.
TL;DR: In this article, carbon nanobowls supported ultrafine iridium nanocrystals are synthesized by a simple complexation-reduction method with assistance of 1-hydroxyethane-1, 1-diphosphonic acid, which effectively serves as as complexant, capping agent and surfactant during the synthesis.
Journal ArticleDOI
Functionalized Co3O4 graphitic nanoparticles: A high performance electrocatalyst for the oxygen evolution reaction
N. Srinivasa,L. Shreenivasa,Prashanth Shivappa Adarakatti,Prashanth Shivappa Adarakatti,Robert D. Crapnell,Samuel J. Rowley-Neale,Ashoka Siddaramanna,Craig E. Banks +7 more
TL;DR: In this article, a novel synthesis technique for the production of graphitic carbon functionalized Co3O4 was described, which involves the rapid decomposition of cobalt nitrate in the presence of citric acid, and the results exhibited within this study will enable production of highperformance and environmentally benign electrocatalysts towards the OER for use within water splitting devices.
Journal ArticleDOI
Pyridinic-Nitrogen-Containing Carbon Cathode: Efficient Electrocatalyst for Seawater Batteries
TL;DR: In this paper, the authors considered the high overpotential and low power output of salt-metal-based seawater batteries (SWB) in terms of energy storage system.
References
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Journal ArticleDOI
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