Intercalation of Cobalt into the Interlayer of Birnessite Improves Oxygen Evolution Catalysis
- 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)
- 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)
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 Co2+/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 Co2+/birnessite catalyst shows no degradation after 1000 electrochemical cycles.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for the Computational Design of Functional Layered Materials (CCDM)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Institutes of Health (NIH)
- Grant/Contract Number:
- SC0012704; SC0012575; 1428149; P30-GM110758
- OSTI ID:
- 1342636
- Report Number(s):
- BNL-113430-2017-JA; R&D Project: MA015MACA; KC0201010; TRN: US1701541
- Journal Information:
- ACS Catalysis, Vol. 6, Issue 11; ISSN 2155-5435
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 64 works
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