Enhancing the Electrocatalytic Activity of Redox Stable Perovskite Fuel Electrodes in Solid Oxide Cells by Atomic Layer-Deposited Pt Nanoparticles

Abstract

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Ordered mesoporous metal oxides for electrochemical applications: correlation between structure, electrical properties and device performance

“…However, ALD also lends itself to the preparation of active electrode materials. 285,286 Apart from electrochemical energy-storage applications, ALD is actively used to improve the catalytic performance of materials by either depositing metal nanoparticles onto their top surface 287,288 or (partial) overcoating them with an oxide layer. 278,[289][290][291][292][293] The growth of single nanoparticles on carbon or oxide surfaces is usually achieved at comparably high deposition temperatures, where the precursor tends to agglomerate depending on the presence of surface defects and the atmospheric conditions instead of forming a conformal coating during the initial ALD cycles.…”

Nanoscale interface engineering for solid oxide fuel cells using atomic layer deposition

“…In contrast, ALD offers the advantage of reproducibly introducing metal nanocatalysts with high uniformity even on complicated structures and easily depositing composite oxides with diverse compositions. [77][78][79][80][81][82][83][84][85][86] Recently, Tsampas reported an example of successful electrode activity enhancement using ALD by uniformly coating Pt nanocatalysts onto an LSCM electrode (Fig. 8a).…”

“…8a ). 85 This research team had developed a technology for introducing 6.5 nm Pt nanoparticles onto a (La 0.8 Sr 0.2 ) 0.95 MnO 3 /Ce 0.9 Gd 0.1 O 1.95 composite electrode in their early work, 87 and using the same technique they succeeded in applying identically sized Pt nanoparticles reproducibly onto a 4 μm-thick LSCM electrode. An electrode with Pt nanoparticle decoration had its electrode resistance reduced to half at 800 °C compared to a bare electrode ( Fig.…”

Efficient Modulation of Electrocatalyst Interfaces by Atomic Layer Deposition: Fundamentals to Application

“…The results revealed that the prepared Pt/BCF had good catalytic activity and stability, owing to the strong chemical bond between Pt nanoparticles and support, and the high inertness of the BCF aerogel in harsh electrochemical conditions. Pandiyan et al [ 84 ] used MeCpPtMe 3 and O 2 as precursors to synthesize Pt nanoparticles on La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3 perovskite for the CO 2 RR. The results exemplified how the powerful ALD technique can be utilized to uniformly disperse small amounts of highly active metals to boost the electrocatalytic properties of perovskite fuel electrodes.…”