2020
DOI: 10.1002/adma.201906432
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Designed Formation of Double‐Shelled Ni–Fe Layered‐Double‐Hydroxide Nanocages for Efficient Oxygen Evolution Reaction

Abstract: Delicate design of nanostructures for oxygen‐evolution electrocatalysts is an important strategy for accelerating the reaction kinetics of water splitting. In this work, Ni–Fe layered‐double‐hydroxide (LDH) nanocages with tunable shells are synthesized via a facile one‐pot self‐templating method. The number of shells can be precisely controlled by regulating the template etching at the interface. Benefiting from the double‐shelled structure with large electroactive surface area and optimized chemical compositi… Show more

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Cited by 340 publications
(232 citation statements)
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“…In particular, transition metal phosphides, especially bimetallic transition metal phosphides have attracted significant attentions as bi-functional electrocatalysts for water-splitting owing to their remarkably enhanced catalytic activities [32,33]. To maximize the electrochemical performance of the catalysts, endowing the electrocatalysts with hollow nanostructures is regarded as an effective approach, which can significantly increase their specific surface areas and expose more reactive sites [34][35][36][37]. Moreover, the ion diffusion length and transport resistance for water splitting can be effectively reduced by their large void spaces, which has been fully demonstrated by previous studies [38][39][40].…”
Section: Introductionmentioning
confidence: 99%
“…In particular, transition metal phosphides, especially bimetallic transition metal phosphides have attracted significant attentions as bi-functional electrocatalysts for water-splitting owing to their remarkably enhanced catalytic activities [32,33]. To maximize the electrochemical performance of the catalysts, endowing the electrocatalysts with hollow nanostructures is regarded as an effective approach, which can significantly increase their specific surface areas and expose more reactive sites [34][35][36][37]. Moreover, the ion diffusion length and transport resistance for water splitting can be effectively reduced by their large void spaces, which has been fully demonstrated by previous studies [38][39][40].…”
Section: Introductionmentioning
confidence: 99%
“…The OER occurring at the anode of the water electrolyzer involved four-electron transfer and a series of consecutive elementary steps. [60,71,[124][125][126] Similar to ORR, OER is also kinetically sluggish and hence requires a large overpotential. The reaction mechanisms of OER in alkaline media and acidic solutions are different.…”
Section: Oxygen Evolution Reactionmentioning
confidence: 99%
“…d–f) Reproduced with permission. [ 139 ] Copyright 2020, Wiley‐VCH. The micromorphology of g) double‐shelled, h) closed‐double‐shelled, and i) triple‐shelled TiO 2 /Fe 2 TiO 5 hollow microspheres.…”
Section: Structure–performance Correlation Of Homssmentioning
confidence: 99%