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Article: Chemical short-range order in multi-principal element alloy with ordering effects on water electrolysis performance

TitleChemical short-range order in multi-principal element alloy with ordering effects on water electrolysis performance
Authors
Yang, YiyuanJia, ZheZhang, XinyueLiu, YujingWang, QianqianLi, YongjieShao, LiliangDi, SiyiKuang, JuanSun, LigangZhang, Lai-ChangKruzic, Jamie JLu, YangLu, JianShen, Baolong
KeywordsAtomic configuration
Chemical short-range order
Metallurgy
Multi-principal element alloy
Water splitting
Issue Date28-Dec-2023
PublisherElsevier
Citation
Materials Today, 2023 How to Cite?
DOI: http://dx.doi.org/10.1016/j.mattod.2023.12.006
Abstract

The superior electrocatalytic activity of multi-principal element alloys (MPEAs) is typically attributed to synergistic effects of their multi components in random solid solutions. Strategies to control the functional atoms with a chemically ordered atomic distribution and the specific atomic configuration in the MPEAs remain a challenging research topic. Here, we have discovered non-random, chemical short-range order (CSRO) in a Fe10Co5Ni10Cu15Al60 MPEA induced by magnetic characteristics of elements, leading to ultralow overpotential for dual-electrode water splitting in alkaline condition. Atomic-resolution imaging and elemental mapping assisted by statistical analysis and density functional theory (DFT) simulations revealed that CSRO in the MPEA originated from the nearest-neighbor preference of M-Cu (M = Fe, Co, Ni, and Al) pairs and repulsion of same-element pairs (Fe-Fe, Co-Co, Ni-Ni, Cu-Cu, and Al-Al). Such preferential atomic pairs facilitated H2O/H* adsorption/desorption during the hydrogen evolution reaction and reduced the energy barrier for the rate-determining step of the oxygen evolution reaction, thereby promoting excellent overall water splitting performance. The achieved current density (130 mA cm−2) of the low-cost MPEA was ∼4 times higher than that of the Pt/C||RuO2 dual-electrode system (32 mA cm−2) at a cell voltage of 2.0 V. The concept of CSRO in MPEAs offers new insights into their multi-functional applications, potentially spurring the development of numerous high-performance MPEA-based devices for the energy and environmental sectors.


Persistent Identifierhttp://hdl.handle.net/10722/339644
ISSN
1369-7021
2022 Impact Factor: 24.2
2020 SCImago Journal Rankings: 8.071
ISI Accession Number ID
WOS:001204768200001

 

DC FieldValueLanguage
dc.contributor.authorYang, Yiyuan-
dc.contributor.authorJia, Zhe-
dc.contributor.authorZhang, Xinyue-
dc.contributor.authorLiu, Yujing-
dc.contributor.authorWang, Qianqian-
dc.contributor.authorLi, Yongjie-
dc.contributor.authorShao, Liliang-
dc.contributor.authorDi, Siyi-
dc.contributor.authorKuang, Juan-
dc.contributor.authorSun, Ligang-
dc.contributor.authorZhang, Lai-Chang-
dc.contributor.authorKruzic, Jamie J-
dc.contributor.authorLu, Yang-
dc.contributor.authorLu, Jian-
dc.contributor.authorShen, Baolong -
dc.date.accessioned2024-03-11T10:38:13Z-
dc.date.available2024-03-11T10:38:13Z-
dc.date.issued2023-12-28-
dc.identifier.citationMaterials Today, 2023-
dc.identifier.issn1369-7021-
dc.identifier.urihttp://hdl.handle.net/10722/339644-
dc.description.abstract<p>The superior electrocatalytic activity of multi-principal element alloys (MPEAs) is typically attributed to synergistic effects of their multi components in random solid solutions. Strategies to control the functional atoms with a chemically ordered atomic distribution and the specific atomic configuration in the MPEAs remain a challenging research topic. Here, we have discovered non-random, chemical short-range order (CSRO) in a Fe<sub>10</sub>Co<sub>5</sub>Ni<sub>10</sub>Cu<sub>15</sub>Al<sub>60</sub> MPEA induced by magnetic characteristics of elements, leading to ultralow overpotential for dual-electrode water splitting in alkaline condition. Atomic-resolution imaging and elemental mapping assisted by statistical analysis and density functional theory (DFT) simulations revealed that CSRO in the MPEA originated from the nearest-neighbor preference of M-Cu (M = Fe, Co, Ni, and Al) pairs and repulsion of same-element pairs (Fe-Fe, Co-Co, Ni-Ni, Cu-Cu, and Al-Al). Such preferential atomic pairs facilitated H<sub>2</sub>O/H* adsorption/desorption during the <a href="https://www.sciencedirect.com/topics/materials-science/hydrogen-evolution" title="Learn more about hydrogen evolution reaction from ScienceDirect's AI-generated Topic Pages">hydrogen evolution reaction</a> and reduced the energy barrier for the rate-determining step of the <a href="https://www.sciencedirect.com/topics/engineering/oxygen-evolution-reaction" title="Learn more about oxygen evolution reaction from ScienceDirect's AI-generated Topic Pages">oxygen evolution reaction</a>, thereby promoting excellent overall water splitting performance. The achieved current density (130 mA cm<sup>−2</sup>) of the low-cost MPEA was ∼4 times higher than that of the Pt/C||RuO<sub>2</sub> dual-electrode system (32 mA cm<sup>−2</sup>) at a <a href="https://www.sciencedirect.com/topics/engineering/cell-voltage" title="Learn more about cell voltage from ScienceDirect's AI-generated Topic Pages">cell voltage</a> of 2.0 V. The concept of CSRO in MPEAs offers new insights into their multi-functional applications, potentially spurring the development of numerous high-performance MPEA-based devices for the energy and environmental sectors.<br></p>-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofMaterials Today-
dc.subjectAtomic configuration-
dc.subjectChemical short-range order-
dc.subjectMetallurgy-
dc.subjectMulti-principal element alloy-
dc.subjectWater splitting-
dc.titleChemical short-range order in multi-principal element alloy with ordering effects on water electrolysis performance-
dc.typeArticle-
dc.identifier.doi10.1016/j.mattod.2023.12.006-
dc.identifier.scopuseid_2-s2.0-85181086355-
dc.identifier.eissn1369-7021-
dc.identifier.isiWOS:001204768200001-
dc.identifier.issnl1369-7021-

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