Large-Scale and Simple Synthesis of NiFe(OH)x Electrode Derived from Raney Ni Precursor for Efficient Alkaline Water Electrolyzer
Water electrolysis is a crucial technology in the production of hydrogen energy. Due to the escalating industrial demand for green hydrogen, the required electrode size for a traditional alkaline water electrolyzer has been increasing. Numerous studies have focused on developing highly active oxygen...
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description | Water electrolysis is a crucial technology in the production of hydrogen energy. Due to the escalating industrial demand for green hydrogen, the required electrode size for a traditional alkaline water electrolyzer has been increasing. Numerous studies have focused on developing highly active oxygen evolution reaction (OER) catalysts for water electrolysis. However, there remains a significant gap between the microscale synthesis of catalysts in laboratory settings and the macroscale preparation required for industrial scenarios. This challenge is particularly pronounced in the synthesis of sizable self-supported electrodes. In this work, we employed a commercially available Raney Ni-coated Ni mesh as a precursor material to fabricate a self-supported NiFe(OH)x@Raney Ni anode with a substantial dimension exceeding 300 mm through a straightforward immersion technique. The as-prepared electrode exhibited remarkable electrocatalytic OER activity, as an overpotential of only 240 mV is required to achieve 10 mA cm−2. This performance is comparable to that of NiFe-LDHs synthesized via a hydrothermal method, which is difficult to scale up for industrial applications. Furthermore, the electrode demonstrated exceptional durability, maintaining stable operation for over 100 h at a current density of 500 mA cm−2. The large-scale electrode displayed consistent overpotentials across various areas, indicating uniform catalytic activity. When integrated into an alkaline water electrolysis device, it delivered an average cell voltage of 1.80 V at 200 mA cm−2 and achieved a direct current hydrogen production energy consumption as low as 4.3 kWh/Nm3. These findings underline the suitability of electrodes for industrial scale applications, offering a promising alternative for energy-efficient hydrogen production. |
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Due to the escalating industrial demand for green hydrogen, the required electrode size for a traditional alkaline water electrolyzer has been increasing. Numerous studies have focused on developing highly active oxygen evolution reaction (OER) catalysts for water electrolysis. However, there remains a significant gap between the microscale synthesis of catalysts in laboratory settings and the macroscale preparation required for industrial scenarios. This challenge is particularly pronounced in the synthesis of sizable self-supported electrodes. In this work, we employed a commercially available Raney Ni-coated Ni mesh as a precursor material to fabricate a self-supported NiFe(OH)x@Raney Ni anode with a substantial dimension exceeding 300 mm through a straightforward immersion technique. The as-prepared electrode exhibited remarkable electrocatalytic OER activity, as an overpotential of only 240 mV is required to achieve 10 mA cm−2. This performance is comparable to that of NiFe-LDHs synthesized via a hydrothermal method, which is difficult to scale up for industrial applications. Furthermore, the electrode demonstrated exceptional durability, maintaining stable operation for over 100 h at a current density of 500 mA cm−2. The large-scale electrode displayed consistent overpotentials across various areas, indicating uniform catalytic activity. When integrated into an alkaline water electrolysis device, it delivered an average cell voltage of 1.80 V at 200 mA cm−2 and achieved a direct current hydrogen production energy consumption as low as 4.3 kWh/Nm3. These findings underline the suitability of electrodes for industrial scale applications, offering a promising alternative for energy-efficient hydrogen production.</description><identifier>ISSN: 2073-4344</identifier><identifier>EISSN: 2073-4344</identifier><identifier>DOI: 10.3390/catal14050296</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Catalysts ; Catalytic activity ; Chemical synthesis ; Direct current ; Electrodes ; Electrolysis ; Energy consumption ; Green hydrogen ; Hydrogen ; Hydrogen production ; Industrial applications ; Intermetallic compounds ; Iron compounds ; Nickel compounds ; Nitrates ; Oxygen evolution reactions ; Precursors ; Renewable resources ; Spectrum analysis</subject><ispartof>Catalysts, 2024-05, Vol.14 (5), p.296</ispartof><rights>2024 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-c234t-6c2ac1f5925b2b02b3ce5e3c476a72395d70b65aab6e4043bc3613d81572c09e3</citedby><cites>FETCH-LOGICAL-c234t-6c2ac1f5925b2b02b3ce5e3c476a72395d70b65aab6e4043bc3613d81572c09e3</cites><orcidid>0000-0002-2136-0350</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Li, Tianshui</creatorcontrib><creatorcontrib>Liu, Wei</creatorcontrib><creatorcontrib>Xin, Huijun</creatorcontrib><creatorcontrib>Sha, Qihao</creatorcontrib><creatorcontrib>Xu, Haijun</creatorcontrib><creatorcontrib>Kuang, Yun</creatorcontrib><creatorcontrib>Sun, Xiaoming</creatorcontrib><title>Large-Scale and Simple Synthesis of NiFe(OH)x Electrode Derived from Raney Ni Precursor for Efficient Alkaline Water Electrolyzer</title><title>Catalysts</title><description>Water electrolysis is a crucial technology in the production of hydrogen energy. 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This performance is comparable to that of NiFe-LDHs synthesized via a hydrothermal method, which is difficult to scale up for industrial applications. Furthermore, the electrode demonstrated exceptional durability, maintaining stable operation for over 100 h at a current density of 500 mA cm−2. The large-scale electrode displayed consistent overpotentials across various areas, indicating uniform catalytic activity. When integrated into an alkaline water electrolysis device, it delivered an average cell voltage of 1.80 V at 200 mA cm−2 and achieved a direct current hydrogen production energy consumption as low as 4.3 kWh/Nm3. These findings underline the suitability of electrodes for industrial scale applications, offering a promising alternative for energy-efficient hydrogen production.</description><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Chemical synthesis</subject><subject>Direct current</subject><subject>Electrodes</subject><subject>Electrolysis</subject><subject>Energy consumption</subject><subject>Green hydrogen</subject><subject>Hydrogen</subject><subject>Hydrogen production</subject><subject>Industrial applications</subject><subject>Intermetallic compounds</subject><subject>Iron compounds</subject><subject>Nickel compounds</subject><subject>Nitrates</subject><subject>Oxygen evolution reactions</subject><subject>Precursors</subject><subject>Renewable resources</subject><subject>Spectrum analysis</subject><issn>2073-4344</issn><issn>2073-4344</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpVkM1Lw0AQxRdRsNQevS940UN0P5PmWGprhWLFKh7DZjOrW9OkzqZivPmfG6mCDgzzDo83vB8hx5ydS5myC2saU3LFNBNpvEd6giUyUlKp_T_6kAxCWLFuUi6HXPfI59zgE0RLa0qgpiro0q83nVy2VfMMwQdaO3rjp3C6mJ2900kJtsG6AHoJ6N-goA7rNb0zFbSdjd4i2C2GGqnrduKctx6qho7KF1P6CuijaQB_Y8r2A_CIHDhTBhj83D55mE7ux7Novri6Ho_mkRVSNVFshbHc6VToXORM5NKCBmlVEptEyFQXCctjbUweg2JK5lbGXBZdyURYloLsk5Nd7gbr1y2EJlvVW6y6l5lkOlVsyDtMfRLtXBbrEBBctkG_NthmnGXfoLN_oOUXGSFxIQ</recordid><startdate>20240501</startdate><enddate>20240501</enddate><creator>Li, Tianshui</creator><creator>Liu, Wei</creator><creator>Xin, Huijun</creator><creator>Sha, Qihao</creator><creator>Xu, Haijun</creator><creator>Kuang, Yun</creator><creator>Sun, Xiaoming</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0002-2136-0350</orcidid></search><sort><creationdate>20240501</creationdate><title>Large-Scale and Simple Synthesis of NiFe(OH)x Electrode Derived from Raney Ni Precursor for Efficient Alkaline Water Electrolyzer</title><author>Li, Tianshui ; 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This performance is comparable to that of NiFe-LDHs synthesized via a hydrothermal method, which is difficult to scale up for industrial applications. Furthermore, the electrode demonstrated exceptional durability, maintaining stable operation for over 100 h at a current density of 500 mA cm−2. The large-scale electrode displayed consistent overpotentials across various areas, indicating uniform catalytic activity. When integrated into an alkaline water electrolysis device, it delivered an average cell voltage of 1.80 V at 200 mA cm−2 and achieved a direct current hydrogen production energy consumption as low as 4.3 kWh/Nm3. These findings underline the suitability of electrodes for industrial scale applications, offering a promising alternative for energy-efficient hydrogen production.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/catal14050296</doi><orcidid>https://orcid.org/0000-0002-2136-0350</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Catalysts Catalytic activity Chemical synthesis Direct current Electrodes Electrolysis Energy consumption Green hydrogen Hydrogen Hydrogen production Industrial applications Intermetallic compounds Iron compounds Nickel compounds Nitrates Oxygen evolution reactions Precursors Renewable resources Spectrum analysis |
title | Large-Scale and Simple Synthesis of NiFe(OH)x Electrode Derived from Raney Ni Precursor for Efficient Alkaline Water Electrolyzer |
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