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Title: Dual properties of a hydrogen oxidation Ni-catalyst entrapped within a polymer promote self-defense against oxygen

Abstract

A bio-inspired O2 sensitive nickel catalyst dispersed in a hydrophobic and redox-silent polymer matrix shows enhanced stability for catalytic H2 oxidation as well as O2 tolerance. A simple but efficient electrode design separates the catalyst into two different reaction layers to promote different reactivity on the catalyst. (1) close to the electrode surface, the catalyst can directly exchange electrons with the electrode and generate current from H2 oxidation; and (2) at the outer film boundary, the electrolyte exposed layer is electrically isolated from the electrode, which enables the H2 reduced Ni-complex to convert O2 to H2O and thus provides protection to the O2-sensitive inner reaction layer. This strategy solves one of the biggest limitations of these otherwise outstanding catalysts and could be used to protect other similar catalysts whose wider application is currently limited by sensitivity towards oxygen.

Authors:
 [1];  [2];  [3];  [1]; ORCiD logo [2];  [1];  [3]; ORCiD logo [2]; ORCiD logo [1]
  1. Max Planck Inst. for Chemical Energy Conversion, Ruhr (Germany)
  2. Univ. Bochum (Germany)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1424831
Report Number(s):
PNNL-SA-129794
Journal ID: ISSN 2041-1723; KC0302010
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Oughli, Alaa A., Ruff, Adrian, Boralugodage, Nilusha Priyadarshani, Rodríguez-Maciá, Patricia, Plumeré, Nicolas, Lubitz, Wolfgang, Shaw, Wendy J., Schuhmann, Wolfgang, and Rüdiger, Olaf. Dual properties of a hydrogen oxidation Ni-catalyst entrapped within a polymer promote self-defense against oxygen. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03011-7.
Oughli, Alaa A., Ruff, Adrian, Boralugodage, Nilusha Priyadarshani, Rodríguez-Maciá, Patricia, Plumeré, Nicolas, Lubitz, Wolfgang, Shaw, Wendy J., Schuhmann, Wolfgang, & Rüdiger, Olaf. Dual properties of a hydrogen oxidation Ni-catalyst entrapped within a polymer promote self-defense against oxygen. United States. doi:10.1038/s41467-018-03011-7.
Oughli, Alaa A., Ruff, Adrian, Boralugodage, Nilusha Priyadarshani, Rodríguez-Maciá, Patricia, Plumeré, Nicolas, Lubitz, Wolfgang, Shaw, Wendy J., Schuhmann, Wolfgang, and Rüdiger, Olaf. Wed . "Dual properties of a hydrogen oxidation Ni-catalyst entrapped within a polymer promote self-defense against oxygen". United States. doi:10.1038/s41467-018-03011-7. https://www.osti.gov/servlets/purl/1424831.
@article{osti_1424831,
title = {Dual properties of a hydrogen oxidation Ni-catalyst entrapped within a polymer promote self-defense against oxygen},
author = {Oughli, Alaa A. and Ruff, Adrian and Boralugodage, Nilusha Priyadarshani and Rodríguez-Maciá, Patricia and Plumeré, Nicolas and Lubitz, Wolfgang and Shaw, Wendy J. and Schuhmann, Wolfgang and Rüdiger, Olaf},
abstractNote = {A bio-inspired O2 sensitive nickel catalyst dispersed in a hydrophobic and redox-silent polymer matrix shows enhanced stability for catalytic H2 oxidation as well as O2 tolerance. A simple but efficient electrode design separates the catalyst into two different reaction layers to promote different reactivity on the catalyst. (1) close to the electrode surface, the catalyst can directly exchange electrons with the electrode and generate current from H2 oxidation; and (2) at the outer film boundary, the electrolyte exposed layer is electrically isolated from the electrode, which enables the H2 reduced Ni-complex to convert O2 to H2O and thus provides protection to the O2-sensitive inner reaction layer. This strategy solves one of the biggest limitations of these otherwise outstanding catalysts and could be used to protect other similar catalysts whose wider application is currently limited by sensitivity towards oxygen.},
doi = {10.1038/s41467-018-03011-7},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {2}
}

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Cited by: 11 works
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