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Title: Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures
Authors: Chua, Chun Kiang
Sofer, Zdeněk
Jankovský, Ondřej
Pumera, Martin
Keywords: DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry
Issue Date: 2015
Source: Chua, C. K., Sofer, Z., Jankovský, O., & Pumera, M. (2015). Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures. ChemPhysChem, 16(4), 769-774.
Series/Report no.: ChemPhysChem
Abstract: Recent research on stable 2D nanomaterials has led to the discovery of new materials for energy-conversion and energy-storage applications. A class of layered heterostructures known as misfit-layered chalcogenides consists of well-defined atomic layers and has previously been applied as thermoelectric materials for use as high-temperature thermoelectric batteries. The performance of such misfit-layered chalcogenides in electrochemical applications, specifically the hydrogen evolution reaction, is currently unexplored. Herein, a misfit-layered chalcogenide consisting of CoO2 layers interleaved with an SrO–BiO–BiO–SrO rock-salt block and having the formula Bi1.85Sr2Co1.85O7.7−δ is synthesized and examined for its structural and electrochemical properties. The hydrogen-evolution performance of misfit-layered Bi1.85Sr2Co1.85O7.7−δ, which has an overpotential of 589 mV and a Tafel slope of 51 mV per decade, demonstrates the promising potential of misfit-layered chalcogenides as electrocatalysts instead of classical carbon.
ISSN: 1439-4235
DOI: 10.1002/cphc.201402836
Rights: © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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