{"title":"电化学活化的 Rh-Ni2P 电催化剂金属氧化物位点用于高效碱性氢进化反应","authors":"Cheng Peng, Jia-Yi Li, Luo-Xiang Shi, Ming-Yue Wang, Wen-Hai Wang, Tao Cheng, Pei-Zhi Yang, Hao Yang, Kong-Lin Wu","doi":"10.1007/s12598-024-02903-6","DOIUrl":null,"url":null,"abstract":"<div><p>Highly efficient hydrogen evolution reaction (HER) electrocatalysts play a crucial part in generating green hydrogen. Herein, an electrochemical activation approach was applied to design 6.7 Rh–Ni<sub>2</sub>P-800CV electrocatalysts in alkaline electrolytes. The results confirm that the generation of metal oxide sites through the electrochemical activation strategy can effectively improve the intrinsic activity of 6.7 Rh–Ni<sub>2</sub>P-800CV. The density functional calculations further confirm that metal oxide active sites are favorable for H<sub>2</sub>O adsorption and activation and H* adsorption/desorption. The 6.7 Rh–Ni<sub>2</sub>P-800CV possesses significantly enhanced HER performance with low overpotential (25 mV at 10 mA·cm<sup>−2</sup>), small Tafel (60 mV·dec<sup>−1</sup>) and robust stability in 1.0 M KOH, outperforming Pt/C and 6.7 Rh–Ni<sub>2</sub>P counterparts. Meanwhile, 6.7 Rh–Ni<sub>2</sub>P-800CV can even operate at a large current density (550 mA·cm<sup>−2</sup>) up to 90 h with an overpotential of 320 mV, which meets the requirements of industrial water splitting. What’s more, the overall water-splitting systems (6.7 Rh–Ni<sub>2</sub>P-800CV || 6.7 Rh–Ni<sub>2</sub>P-800CV) can be directly driven by the solar cell. This work highlights that electrochemical activation technology provides a robust avenue toward constructing efficient electrocatalysts for sustainable energy conversion.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"43 12","pages":"6416 - 6425"},"PeriodicalIF":9.6000,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Electrochemically activated metal oxide sites at Rh–Ni2P electrocatalyst for efficient alkaline hydrogen evolution reaction\",\"authors\":\"Cheng Peng, Jia-Yi Li, Luo-Xiang Shi, Ming-Yue Wang, Wen-Hai Wang, Tao Cheng, Pei-Zhi Yang, Hao Yang, Kong-Lin Wu\",\"doi\":\"10.1007/s12598-024-02903-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Highly efficient hydrogen evolution reaction (HER) electrocatalysts play a crucial part in generating green hydrogen. Herein, an electrochemical activation approach was applied to design 6.7 Rh–Ni<sub>2</sub>P-800CV electrocatalysts in alkaline electrolytes. The results confirm that the generation of metal oxide sites through the electrochemical activation strategy can effectively improve the intrinsic activity of 6.7 Rh–Ni<sub>2</sub>P-800CV. The density functional calculations further confirm that metal oxide active sites are favorable for H<sub>2</sub>O adsorption and activation and H* adsorption/desorption. The 6.7 Rh–Ni<sub>2</sub>P-800CV possesses significantly enhanced HER performance with low overpotential (25 mV at 10 mA·cm<sup>−2</sup>), small Tafel (60 mV·dec<sup>−1</sup>) and robust stability in 1.0 M KOH, outperforming Pt/C and 6.7 Rh–Ni<sub>2</sub>P counterparts. Meanwhile, 6.7 Rh–Ni<sub>2</sub>P-800CV can even operate at a large current density (550 mA·cm<sup>−2</sup>) up to 90 h with an overpotential of 320 mV, which meets the requirements of industrial water splitting. What’s more, the overall water-splitting systems (6.7 Rh–Ni<sub>2</sub>P-800CV || 6.7 Rh–Ni<sub>2</sub>P-800CV) can be directly driven by the solar cell. This work highlights that electrochemical activation technology provides a robust avenue toward constructing efficient electrocatalysts for sustainable energy conversion.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":\"43 12\",\"pages\":\"6416 - 6425\"},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2024-07-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12598-024-02903-6\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12598-024-02903-6","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Electrochemically activated metal oxide sites at Rh–Ni2P electrocatalyst for efficient alkaline hydrogen evolution reaction
Highly efficient hydrogen evolution reaction (HER) electrocatalysts play a crucial part in generating green hydrogen. Herein, an electrochemical activation approach was applied to design 6.7 Rh–Ni2P-800CV electrocatalysts in alkaline electrolytes. The results confirm that the generation of metal oxide sites through the electrochemical activation strategy can effectively improve the intrinsic activity of 6.7 Rh–Ni2P-800CV. The density functional calculations further confirm that metal oxide active sites are favorable for H2O adsorption and activation and H* adsorption/desorption. The 6.7 Rh–Ni2P-800CV possesses significantly enhanced HER performance with low overpotential (25 mV at 10 mA·cm−2), small Tafel (60 mV·dec−1) and robust stability in 1.0 M KOH, outperforming Pt/C and 6.7 Rh–Ni2P counterparts. Meanwhile, 6.7 Rh–Ni2P-800CV can even operate at a large current density (550 mA·cm−2) up to 90 h with an overpotential of 320 mV, which meets the requirements of industrial water splitting. What’s more, the overall water-splitting systems (6.7 Rh–Ni2P-800CV || 6.7 Rh–Ni2P-800CV) can be directly driven by the solar cell. This work highlights that electrochemical activation technology provides a robust avenue toward constructing efficient electrocatalysts for sustainable energy conversion.
期刊介绍：
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.
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