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Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries

Mauro Povia, Jonas Sottmann, Giuseppe Portale, Kenneth D. Knudsen, Serena Margadonna Orcid Logo, Sabrina Sartori

The Journal of Physical Chemistry C, Volume: 122, Issue: 11, Pages: 5917 - 5923

Swansea University Author: Serena Margadonna Orcid Logo

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DOI (Published version): 10.1021/acs.jpcc.7b12825

Abstract

A complete chemical and morphological analysis of the evolution of battery electrode materials can be achieved combining different and complementary techniques. Operando small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) were combined to investigate structural and electrochem...

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Published in: The Journal of Physical Chemistry C
ISSN: 1932-7447 1932-7455
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa38963
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first_indexed 2018-03-07T14:09:48Z
last_indexed 2018-05-08T19:33:12Z
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spelling 2018-05-08T15:24:39.2863165 v2 38963 2018-03-07 Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries e31904a10b1b1240b98ab52d9977dfbe 0000-0002-6996-6562 Serena Margadonna Serena Margadonna true false 2018-03-07 CHEG A complete chemical and morphological analysis of the evolution of battery electrode materials can be achieved combining different and complementary techniques. Operando small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) were combined to investigate structural and electrochemical performances of an Na-ion battery, with amorphous red phosphorus in a carbon matrix (a-P/C) as the active anode material in a Swagelok-type cell. The charging process results in the formation of crystalline Na3P, while during discharging, the anode material returns to the initial a-P/C. From the analysis of the WAXS curves, the formation of crystalline phases appears only at the end of charging. However, SAXS data show that partial reorganization of the material during charging occurs at length scales nonaccessible with conventional X-ray diffraction, corresponding to a real space ordering distance of 4.6 nm. Furthermore, the analysis of the SAXS data shows that the electrode remains dense during charging, while it develops some porosity during the discharge phase. The presented results indicate that the combination of SAXS/WAXS adopted simultaneously, and nondestructively, on a working electrochemical cell can highlight new mechanisms of reactions otherwise undetected. This method can be applied for the study of any other solid electrode material for batteries. Journal Article The Journal of Physical Chemistry C 122 11 5917 5923 1932-7447 1932-7455 Energy Storage, Na-ion batteries, anodes, in-operando synchrotron techniques. 22 3 2018 2018-03-22 10.1021/acs.jpcc.7b12825 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2018-05-08T15:24:39.2863165 2018-03-07T11:45:10.2838999 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Mauro Povia 1 Jonas Sottmann 2 Giuseppe Portale 3 Kenneth D. Knudsen 4 Serena Margadonna 0000-0002-6996-6562 5 Sabrina Sartori 6 0038963-07032018114656.pdf JPCC.pdf 2018-03-07T11:46:56.8970000 Output 691810 application/pdf Accepted Manuscript true 2019-02-23T00:00:00.0000000 true eng
title Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries
spellingShingle Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries
Serena Margadonna
title_short Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries
title_full Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries
title_fullStr Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries
title_full_unstemmed Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries
title_sort Operando SAXS/WAXS on the a-P/C as the Anode for Na-Ion Batteries
author_id_str_mv e31904a10b1b1240b98ab52d9977dfbe
author_id_fullname_str_mv e31904a10b1b1240b98ab52d9977dfbe_***_Serena Margadonna
author Serena Margadonna
author2 Mauro Povia
Jonas Sottmann
Giuseppe Portale
Kenneth D. Knudsen
Serena Margadonna
Sabrina Sartori
format Journal article
container_title The Journal of Physical Chemistry C
container_volume 122
container_issue 11
container_start_page 5917
publishDate 2018
institution Swansea University
issn 1932-7447
1932-7455
doi_str_mv 10.1021/acs.jpcc.7b12825
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 1
active_str 0
description A complete chemical and morphological analysis of the evolution of battery electrode materials can be achieved combining different and complementary techniques. Operando small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) were combined to investigate structural and electrochemical performances of an Na-ion battery, with amorphous red phosphorus in a carbon matrix (a-P/C) as the active anode material in a Swagelok-type cell. The charging process results in the formation of crystalline Na3P, while during discharging, the anode material returns to the initial a-P/C. From the analysis of the WAXS curves, the formation of crystalline phases appears only at the end of charging. However, SAXS data show that partial reorganization of the material during charging occurs at length scales nonaccessible with conventional X-ray diffraction, corresponding to a real space ordering distance of 4.6 nm. Furthermore, the analysis of the SAXS data shows that the electrode remains dense during charging, while it develops some porosity during the discharge phase. The presented results indicate that the combination of SAXS/WAXS adopted simultaneously, and nondestructively, on a working electrochemical cell can highlight new mechanisms of reactions otherwise undetected. This method can be applied for the study of any other solid electrode material for batteries.
published_date 2018-03-22T03:49:27Z
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score 10.9517765

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