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Title: Intercalation of Cobalt into the Interlayer of Birnessite Improves Oxygen Evolution Catalysis

Here we show that the activity of cobalt for the oxygen evolution reaction (OER) can be enhanced by confining it in the interlayer region of birnessite (layered manganese oxide). The cobalt intercalation was verified by employing state-of-the-art characterization techniques such as XRD, Raman and electron microscopy. It is demonstrated that the Co 2+/birnessite electrocatalyst can reach 10 mA cm -2 at an overpotential of 360 mV with near unity Faradaic efficiency. This overpotential is lower than that which can be achieved by using a pure cobalt hydroxide electrocatalyst for the OER. Furthermore, the Co 2+/birnessite catalyst shows no degradation after 1000 electrochemical cycles.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [1] ;  [1] ;  [1]
  1. Temple Univ., Philadelphia, PA (United States). Dept. of Chemistry; Temple Univ., Philadelphia, PA (United States). Center for the Computational Design of Functional Layered Materials (CCDM)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Temple Univ., Philadelphia, PA (United States). Center for the Computational Design of Functional Layered Materials (CCDM)
Publication Date:
Report Number(s):
BNL-113430-2017-JA
Journal ID: ISSN 2155-5435; R&D Project: MA015MACA; KC0201010; TRN: US1701541
Grant/Contract Number:
SC0012704; SC0012575; 1428149; P30-GM110758
Type:
Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 6; Journal Issue: 11; Journal ID: ISSN 2155-5435
Publisher:
American Chemical Society (ACS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); National Institutes of Health (NIH)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; birnessite; cobalt intercalation; electrocatalyst; oxygen evolution reaction; water splitting
OSTI Identifier:
1342636