articleAdvanced MaterialsOct 30, 2017Closed access

Iridium‐Based Multimetallic Porous Hollow Nanocrystals for Efficient Overall‐Water‐Splitting Catalysis

JFJianrui FengFLFan LvWZWeiyu ZhangPLPeihao LiKWKai Wang

Peking University · Nankai University · +1 more institution

PubMed
Indexed incrossrefpubmed

Abstract

Abstract The development of active and durable bifunctional electrocatalysts for overall water splitting is mandatory for renewable energy conversion. This study reports a general method for controllable synthesis of a class of IrM (M = Co, Ni, CoNi) multimetallic porous hollow nanocrystals (PHNCs), through etching Ir‐based, multimetallic, solid nanocrystals using Fe 3+ ions, as catalysts for boosting overall water splitting. The Ir‐based multimetallic PHNCs show transition‐metal‐dependent bifunctional electrocatalytic activities for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in acidic electrolyte, with IrCo and IrCoNi PHNCs being the best for HER and OER, respectively.…

Citation impact

572
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15.08
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100%
References
41
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Authors

12

Topics & keywords

Topics
Keywords
  • Bifunctional
  • Oxygen evolution
  • Water splitting
  • Materials science
  • Catalysis
  • Electrolyte
  • Electrocatalyst
  • Chemical engineering
UN Sustainable Development Goals
  • Affordable and clean energy
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