A Cost-Effective, Nanoporous, High-Entropy Oxide Electrode for Electrocatalytic Water Splitting
High-entropy materials have attracted extensive attention as emerging electrode materials in various energy applications due to their flexible tunability, unusual outstanding activities, and cost-effectiveness using multiple earth-abundant elements. We introduce a novel high-entropy composite oxide...
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| Veröffentlicht in: | Coatings (Basel) 2023-08, Vol.13 (8), p.1461 |
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| creator | Liu, Bu-Jine Yin, Tai-Hsin Lin, Yu-Wei Chang, Chun-Wei Yu, Hsin-Chieh Lim, Yongtaek Lee, Hyesung Choi, Changsik Tsai, Ming-Kang Choi, YongMan |
| description | High-entropy materials have attracted extensive attention as emerging electrode materials in various energy applications due to their flexible tunability, unusual outstanding activities, and cost-effectiveness using multiple earth-abundant elements. We introduce a novel high-entropy composite oxide with the five elements of Cu, Ni, Co, Fe, and Cr (HEO-3CNF) for use in the oxygen evolution reaction (OER) in electrocatalytic water splitting. HEO-3CNF is composed of two phases with a non-equimolar, deficient high-entropy spinel oxide of (Cu0.2−xNi0.2Co0.2Fe0.2Cr0.2)3O4 and monoclinic copper oxide (CuO). Electrochemical impedance spectroscopy (EIS) with distribution of relaxation times (DRT) analysis validates that the HEO-3CNF-based electrode exhibits faster charge transfer than benchmark CuO. It results in improved OER performance with a lower overpotential at 10 mA/cm2 and a Tafel slope than CuO (518.1 mV and 119.7 mV/dec versus 615.9 mV and 131.7 mV/dec, respectively) in alkaline conditions. This work may provide a general strategy for preparing novel, cost-effective, high-entropy electrodes for water splitting. |
| doi_str_mv | 10.3390/coatings13081461 |
| format | Article |
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We introduce a novel high-entropy composite oxide with the five elements of Cu, Ni, Co, Fe, and Cr (HEO-3CNF) for use in the oxygen evolution reaction (OER) in electrocatalytic water splitting. HEO-3CNF is composed of two phases with a non-equimolar, deficient high-entropy spinel oxide of (Cu0.2−xNi0.2Co0.2Fe0.2Cr0.2)3O4 and monoclinic copper oxide (CuO). Electrochemical impedance spectroscopy (EIS) with distribution of relaxation times (DRT) analysis validates that the HEO-3CNF-based electrode exhibits faster charge transfer than benchmark CuO. It results in improved OER performance with a lower overpotential at 10 mA/cm2 and a Tafel slope than CuO (518.1 mV and 119.7 mV/dec versus 615.9 mV and 131.7 mV/dec, respectively) in alkaline conditions. This work may provide a general strategy for preparing novel, cost-effective, high-entropy electrodes for water splitting.</description><identifier>ISSN: 2079-6412</identifier><identifier>EISSN: 2079-6412</identifier><identifier>DOI: 10.3390/coatings13081461</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Alternative energy sources ; Carbon ; Charge transfer ; Chromium ; Copper ; Copper oxide ; Copper oxides ; Cuprite ; Electrochemical impedance spectroscopy ; Electrode materials ; Electrodes ; Energy resources ; Entropy ; Fossil fuels ; Green hydrogen ; Hydrogen ; Oxygen evolution reactions ; Radiation ; Renewable resources ; Scanning electron microscopy ; Voltammetry ; Water splitting</subject><ispartof>Coatings (Basel), 2023-08, Vol.13 (8), p.1461</ispartof><rights>COPYRIGHT 2023 MDPI AG</rights><rights>2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c352t-85834942c137b059f3ba3c31661dd5b8c9300154978d9d2a7f42e664cb651693</citedby><cites>FETCH-LOGICAL-c352t-85834942c137b059f3ba3c31661dd5b8c9300154978d9d2a7f42e664cb651693</cites><orcidid>0000-0003-4276-1599 ; 0000-0001-9189-5572 ; 0000-0001-9166-2082</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Liu, Bu-Jine</creatorcontrib><creatorcontrib>Yin, Tai-Hsin</creatorcontrib><creatorcontrib>Lin, Yu-Wei</creatorcontrib><creatorcontrib>Chang, Chun-Wei</creatorcontrib><creatorcontrib>Yu, Hsin-Chieh</creatorcontrib><creatorcontrib>Lim, Yongtaek</creatorcontrib><creatorcontrib>Lee, Hyesung</creatorcontrib><creatorcontrib>Choi, Changsik</creatorcontrib><creatorcontrib>Tsai, Ming-Kang</creatorcontrib><creatorcontrib>Choi, YongMan</creatorcontrib><title>A Cost-Effective, Nanoporous, High-Entropy Oxide Electrode for Electrocatalytic Water Splitting</title><title>Coatings (Basel)</title><description>High-entropy materials have attracted extensive attention as emerging electrode materials in various energy applications due to their flexible tunability, unusual outstanding activities, and cost-effectiveness using multiple earth-abundant elements. We introduce a novel high-entropy composite oxide with the five elements of Cu, Ni, Co, Fe, and Cr (HEO-3CNF) for use in the oxygen evolution reaction (OER) in electrocatalytic water splitting. HEO-3CNF is composed of two phases with a non-equimolar, deficient high-entropy spinel oxide of (Cu0.2−xNi0.2Co0.2Fe0.2Cr0.2)3O4 and monoclinic copper oxide (CuO). Electrochemical impedance spectroscopy (EIS) with distribution of relaxation times (DRT) analysis validates that the HEO-3CNF-based electrode exhibits faster charge transfer than benchmark CuO. It results in improved OER performance with a lower overpotential at 10 mA/cm2 and a Tafel slope than CuO (518.1 mV and 119.7 mV/dec versus 615.9 mV and 131.7 mV/dec, respectively) in alkaline conditions. 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Yin, Tai-Hsin ; Lin, Yu-Wei ; Chang, Chun-Wei ; Yu, Hsin-Chieh ; Lim, Yongtaek ; Lee, Hyesung ; Choi, Changsik ; Tsai, Ming-Kang ; Choi, YongMan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c352t-85834942c137b059f3ba3c31661dd5b8c9300154978d9d2a7f42e664cb651693</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Alternative energy sources</topic><topic>Carbon</topic><topic>Charge transfer</topic><topic>Chromium</topic><topic>Copper</topic><topic>Copper oxide</topic><topic>Copper oxides</topic><topic>Cuprite</topic><topic>Electrochemical impedance spectroscopy</topic><topic>Electrode materials</topic><topic>Electrodes</topic><topic>Energy resources</topic><topic>Entropy</topic><topic>Fossil fuels</topic><topic>Green hydrogen</topic><topic>Hydrogen</topic><topic>Oxygen evolution reactions</topic><topic>Radiation</topic><topic>Renewable resources</topic><topic>Scanning electron microscopy</topic><topic>Voltammetry</topic><topic>Water splitting</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Bu-Jine</creatorcontrib><creatorcontrib>Yin, Tai-Hsin</creatorcontrib><creatorcontrib>Lin, Yu-Wei</creatorcontrib><creatorcontrib>Chang, Chun-Wei</creatorcontrib><creatorcontrib>Yu, Hsin-Chieh</creatorcontrib><creatorcontrib>Lim, Yongtaek</creatorcontrib><creatorcontrib>Lee, Hyesung</creatorcontrib><creatorcontrib>Choi, Changsik</creatorcontrib><creatorcontrib>Tsai, Ming-Kang</creatorcontrib><creatorcontrib>Choi, YongMan</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><jtitle>Coatings (Basel)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Bu-Jine</au><au>Yin, Tai-Hsin</au><au>Lin, Yu-Wei</au><au>Chang, Chun-Wei</au><au>Yu, Hsin-Chieh</au><au>Lim, Yongtaek</au><au>Lee, Hyesung</au><au>Choi, Changsik</au><au>Tsai, Ming-Kang</au><au>Choi, YongMan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Cost-Effective, Nanoporous, High-Entropy Oxide Electrode for Electrocatalytic Water Splitting</atitle><jtitle>Coatings (Basel)</jtitle><date>2023-08-01</date><risdate>2023</risdate><volume>13</volume><issue>8</issue><spage>1461</spage><pages>1461-</pages><issn>2079-6412</issn><eissn>2079-6412</eissn><abstract>High-entropy materials have attracted extensive attention as emerging electrode materials in various energy applications due to their flexible tunability, unusual outstanding activities, and cost-effectiveness using multiple earth-abundant elements. We introduce a novel high-entropy composite oxide with the five elements of Cu, Ni, Co, Fe, and Cr (HEO-3CNF) for use in the oxygen evolution reaction (OER) in electrocatalytic water splitting. HEO-3CNF is composed of two phases with a non-equimolar, deficient high-entropy spinel oxide of (Cu0.2−xNi0.2Co0.2Fe0.2Cr0.2)3O4 and monoclinic copper oxide (CuO). Electrochemical impedance spectroscopy (EIS) with distribution of relaxation times (DRT) analysis validates that the HEO-3CNF-based electrode exhibits faster charge transfer than benchmark CuO. It results in improved OER performance with a lower overpotential at 10 mA/cm2 and a Tafel slope than CuO (518.1 mV and 119.7 mV/dec versus 615.9 mV and 131.7 mV/dec, respectively) in alkaline conditions. This work may provide a general strategy for preparing novel, cost-effective, high-entropy electrodes for water splitting.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/coatings13081461</doi><orcidid>https://orcid.org/0000-0003-4276-1599</orcidid><orcidid>https://orcid.org/0000-0001-9189-5572</orcidid><orcidid>https://orcid.org/0000-0001-9166-2082</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; MDPI - Multidisciplinary Digital Publishing Institute; Alma/SFX Local Collection |
| subjects | Alternative energy sources Carbon Charge transfer Chromium Copper Copper oxide Copper oxides Cuprite Electrochemical impedance spectroscopy Electrode materials Electrodes Energy resources Entropy Fossil fuels Green hydrogen Hydrogen Oxygen evolution reactions Radiation Renewable resources Scanning electron microscopy Voltammetry Water splitting |
| title | A Cost-Effective, Nanoporous, High-Entropy Oxide Electrode for Electrocatalytic Water Splitting |
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