Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures
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 thermoelectr...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/106881 http://hdl.handle.net/10220/25178 http://dx.doi.org/10.1002/cphc.201402836 |
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| author | Chua, Chun Kiang Sofer, Zdeněk Jankovský, Ondřej Pumera, Martin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Chua, Chun Kiang Sofer, Zdeněk Jankovský, Ondřej Pumera, Martin |
| author_sort | Chua, Chun Kiang |
| collection | NTU |
| description | 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. |
| first_indexed | 2025-02-19T03:36:17Z |
| format | Journal Article |
| id | ntu-10356/106881 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:36:17Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1068812019-12-06T22:20:14Z Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures Chua, Chun Kiang Sofer, Zdeněk Jankovský, Ondřej Pumera, Martin School of Physical and Mathematical Sciences DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry 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. 2015-03-04T09:12:17Z 2019-12-06T22:20:14Z 2015-03-04T09:12:17Z 2019-12-06T22:20:14Z 2015 2015 Journal Article 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. 1439-4235 https://hdl.handle.net/10356/106881 http://hdl.handle.net/10220/25178 http://dx.doi.org/10.1002/cphc.201402836 en ChemPhysChem © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry Chua, Chun Kiang Sofer, Zdeněk Jankovský, Ondřej Pumera, Martin Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures |
| title | Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures |
| title_full | Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures |
| title_fullStr | Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures |
| title_full_unstemmed | Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures |
| title_short | Misfit-layered Bi1.85Sr2Co1.85O7.7−δ for the hydrogen evolution reaction : beyond van der Waals heterostructures |
| title_sort | misfit layered bi1 85sr2co1 85o7 7 δ for the hydrogen evolution reaction beyond van der waals heterostructures |
| topic | DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry |
| url | https://hdl.handle.net/10356/106881 http://hdl.handle.net/10220/25178 http://dx.doi.org/10.1002/cphc.201402836 |
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