High-Entropy Carbonates (Ni-Mn-Co-Zn-Cr-Fe) as a Promising Electrocatalyst for Alkalized Seawater Oxidation
Direct seawater splitting has attracted considerable attention as an alternative to conventional alkaline water electrolysis because the former avoids the use of limited freshwater resources. However, several challenges must be overcome to realize direct seawater electrolysis. Most importantly, elec...
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| Veröffentlicht in: | International journal of energy research 2024-03, Vol.2024, p.1-16 |
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| creator | Kim, Min Gi Gaur, Ashish Jang, Jin Uk Na, Kyeong-Han Choi, Won-Youl Han, HyukSu |
| description | Direct seawater splitting has attracted considerable attention as an alternative to conventional alkaline water electrolysis because the former avoids the use of limited freshwater resources. However, several challenges must be overcome to realize direct seawater electrolysis. Most importantly, electrocatalysts for the anodic oxygen evolution reaction (OER) should exhibit high activity, stability, and selectivity in highly corrosive environments with abundant chloride ions. In this study, we developed high-entropy carbonate (HEC) as a promising electrocatalyst for seawater oxidation. In HECs, physicochemical interactions among different elements can effectively suppress the corrosion of OER active sites, while polyanionic CO32- can act as a corrosion-protective species by repelling negatively charged chloride ions during electrolysis. Consequently, HECs demonstrate outstanding catalytic activity, stability, and selectivity for seawater oxidation, surpassing those of ternary, quaternary, and quinary carbonates and even benchmark IrO2 catalysts. |
| doi_str_mv | 10.1155/2024/9996841 |
| format | Article |
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However, several challenges must be overcome to realize direct seawater electrolysis. Most importantly, electrocatalysts for the anodic oxygen evolution reaction (OER) should exhibit high activity, stability, and selectivity in highly corrosive environments with abundant chloride ions. In this study, we developed high-entropy carbonate (HEC) as a promising electrocatalyst for seawater oxidation. In HECs, physicochemical interactions among different elements can effectively suppress the corrosion of OER active sites, while polyanionic CO32- can act as a corrosion-protective species by repelling negatively charged chloride ions during electrolysis. Consequently, HECs demonstrate outstanding catalytic activity, stability, and selectivity for seawater oxidation, surpassing those of ternary, quaternary, and quinary carbonates and even benchmark IrO2 catalysts.</description><identifier>ISSN: 0363-907X</identifier><identifier>EISSN: 1099-114X</identifier><identifier>DOI: 10.1155/2024/9996841</identifier><language>eng</language><publisher>Bognor Regis: Hindawi</publisher><subject>Alkaline water ; Carbon black ; Carbonates ; Catalysts ; Catalytic activity ; Chloride ions ; Cobalt ; Corrosion ; Corrosion resistance ; Electrocatalysts ; Electrodes ; Electrolysis ; Electrolytes ; Entropy ; Fourier transforms ; Freshwater ; Freshwater resources ; Hydrogen ; Inland water environment ; Ions ; Manganese ; Nickel ; Nitrates ; Oxidation ; Oxygen evolution reactions ; Protected species ; Raw materials ; Scanning electron microscopy ; Seawater ; Spectrum analysis ; Stability ; Temperature ; Thermogravimetric analysis ; Voltammetry ; Zinc</subject><ispartof>International journal of energy research, 2024-03, Vol.2024, p.1-16</ispartof><rights>Copyright © 2024 Min Gi Kim et al.</rights><rights>Copyright © 2024 Min Gi Kim et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. https://creativecommons.org/licenses/by/4.0</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c294t-bd8f80ed5df81c9ff7a2fc8f4ba84a1a2c31d27dea7d0dce62e6f7f14a01b40c3</cites><orcidid>0000-0002-2181-827X ; 0000-0001-7230-612X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/2958096529/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/2958096529?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,864,877,21388,27924,27925,33744,43805,64385,64389,72469,74302</link.rule.ids></links><search><contributor>Thangjam Ibomcha Singh, Thangjam Ibomcha</contributor><contributor>Thangjam Ibomcha Thangjam Ibomcha Singh</contributor><creatorcontrib>Kim, Min Gi</creatorcontrib><creatorcontrib>Gaur, Ashish</creatorcontrib><creatorcontrib>Jang, Jin Uk</creatorcontrib><creatorcontrib>Na, Kyeong-Han</creatorcontrib><creatorcontrib>Choi, Won-Youl</creatorcontrib><creatorcontrib>Han, HyukSu</creatorcontrib><title>High-Entropy Carbonates (Ni-Mn-Co-Zn-Cr-Fe) as a Promising Electrocatalyst for Alkalized Seawater Oxidation</title><title>International journal of energy research</title><description>Direct seawater splitting has attracted considerable attention as an alternative to conventional alkaline water electrolysis because the former avoids the use of limited freshwater resources. However, several challenges must be overcome to realize direct seawater electrolysis. Most importantly, electrocatalysts for the anodic oxygen evolution reaction (OER) should exhibit high activity, stability, and selectivity in highly corrosive environments with abundant chloride ions. In this study, we developed high-entropy carbonate (HEC) as a promising electrocatalyst for seawater oxidation. In HECs, physicochemical interactions among different elements can effectively suppress the corrosion of OER active sites, while polyanionic CO32- can act as a corrosion-protective species by repelling negatively charged chloride ions during electrolysis. Consequently, HECs demonstrate outstanding catalytic activity, stability, and selectivity for seawater oxidation, surpassing those of ternary, quaternary, and quinary carbonates and even benchmark IrO2 catalysts.</description><subject>Alkaline water</subject><subject>Carbon black</subject><subject>Carbonates</subject><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Chloride ions</subject><subject>Cobalt</subject><subject>Corrosion</subject><subject>Corrosion resistance</subject><subject>Electrocatalysts</subject><subject>Electrodes</subject><subject>Electrolysis</subject><subject>Electrolytes</subject><subject>Entropy</subject><subject>Fourier transforms</subject><subject>Freshwater</subject><subject>Freshwater resources</subject><subject>Hydrogen</subject><subject>Inland water environment</subject><subject>Ions</subject><subject>Manganese</subject><subject>Nickel</subject><subject>Nitrates</subject><subject>Oxidation</subject><subject>Oxygen evolution 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Carbonates (Ni-Mn-Co-Zn-Cr-Fe) as a Promising Electrocatalyst for Alkalized Seawater Oxidation</title><author>Kim, Min Gi ; Gaur, Ashish ; Jang, Jin Uk ; Na, Kyeong-Han ; Choi, Won-Youl ; Han, HyukSu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c294t-bd8f80ed5df81c9ff7a2fc8f4ba84a1a2c31d27dea7d0dce62e6f7f14a01b40c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Alkaline water</topic><topic>Carbon black</topic><topic>Carbonates</topic><topic>Catalysts</topic><topic>Catalytic activity</topic><topic>Chloride ions</topic><topic>Cobalt</topic><topic>Corrosion</topic><topic>Corrosion resistance</topic><topic>Electrocatalysts</topic><topic>Electrodes</topic><topic>Electrolysis</topic><topic>Electrolytes</topic><topic>Entropy</topic><topic>Fourier transforms</topic><topic>Freshwater</topic><topic>Freshwater resources</topic><topic>Hydrogen</topic><topic>Inland water 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However, several challenges must be overcome to realize direct seawater electrolysis. Most importantly, electrocatalysts for the anodic oxygen evolution reaction (OER) should exhibit high activity, stability, and selectivity in highly corrosive environments with abundant chloride ions. In this study, we developed high-entropy carbonate (HEC) as a promising electrocatalyst for seawater oxidation. In HECs, physicochemical interactions among different elements can effectively suppress the corrosion of OER active sites, while polyanionic CO32- can act as a corrosion-protective species by repelling negatively charged chloride ions during electrolysis. Consequently, HECs demonstrate outstanding catalytic activity, stability, and selectivity for seawater oxidation, surpassing those of ternary, quaternary, and quinary carbonates and even benchmark IrO2 catalysts.</abstract><cop>Bognor Regis</cop><pub>Hindawi</pub><doi>10.1155/2024/9996841</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0002-2181-827X</orcidid><orcidid>https://orcid.org/0000-0001-7230-612X</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Alkaline water Carbon black Carbonates Catalysts Catalytic activity Chloride ions Cobalt Corrosion Corrosion resistance Electrocatalysts Electrodes Electrolysis Electrolytes Entropy Fourier transforms Freshwater Freshwater resources Hydrogen Inland water environment Ions Manganese Nickel Nitrates Oxidation Oxygen evolution reactions Protected species Raw materials Scanning electron microscopy Seawater Spectrum analysis Stability Temperature Thermogravimetric analysis Voltammetry Zinc |
| title | High-Entropy Carbonates (Ni-Mn-Co-Zn-Cr-Fe) as a Promising Electrocatalyst for Alkalized Seawater Oxidation |
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