Qingtao Wang , Liqiu Huang , Yanxia Wu , Guofu Ma , Ziqiang Lei , Shufang Ren
{"title":"核壳异质结构Bi2Te3/Sb2Te3中V掺杂对析氢反应的作用","authors":"Qingtao Wang , Liqiu Huang , Yanxia Wu , Guofu Ma , Ziqiang Lei , Shufang Ren","doi":"10.1016/j.ijhydene.2022.04.277","DOIUrl":null,"url":null,"abstract":"<div><p><span>Non-noble metal-based materials as low-cost hydrogen evolution reaction<span><span><span> (HER) catalysts are key materials for sustainable hydrogen energy production. </span>Bismuth and </span>antimony<span> chalcogenides are among the hopeful candidates to achieve this goal. In this work, a V-doped Sb</span></span></span><sub>2</sub>Te<sub>3</sub> encapsulated Bi<sub>2</sub>Te<sub>3</sub><span> core-shell electrocatalyst (Bi</span><sub>2</sub>Te<sub>3</sub>/V<sub>x</sub>-Sb<sub>2</sub>Te<sub>3</sub><span>) has been synthesized by a two-step solvothermal method<span>. V doping adjusts the electronic structure of catalyst, dramatically enhances electric double layer capacitance (</span></span><em>C</em><sub>dl</sub><span>) of the catalyst, decreases charge transfer resistance (</span><em>R</em><sub>ct</sub><span>) of the catalyst and increases carrier concentration of the catalyst. Therefore, the V doping method increases the active sites on the surface of the material, and promotes the charge transfer and electron transport<span> in the HER process. In addition, V doping can also adjust the hydrophilicity of the material surface, promote the release of hydrogen, and quickly re-expose the active sites. Bi</span></span><sub>2</sub>Te<sub>3</sub>/V<sub>x</sub>-Sb<sub>2</sub>Te<sub>3</sub><span> electrocatalysts exhibit brilliant HER activity and high stability in both acidic and alkaline electrolytes. This study uses the strategy of V doping to control the electronic structure of materials, which will provide suggestions for the design and preparation for other high-activity catalysts.</span></p></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2022-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Role of V doping in core–shell heterostructured Bi2Te3/Sb2Te3 for hydrogen evolution reaction\",\"authors\":\"Qingtao Wang , Liqiu Huang , Yanxia Wu , Guofu Ma , Ziqiang Lei , Shufang Ren\",\"doi\":\"10.1016/j.ijhydene.2022.04.277\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span>Non-noble metal-based materials as low-cost hydrogen evolution reaction<span><span><span> (HER) catalysts are key materials for sustainable hydrogen energy production. </span>Bismuth and </span>antimony<span> chalcogenides are among the hopeful candidates to achieve this goal. In this work, a V-doped Sb</span></span></span><sub>2</sub>Te<sub>3</sub> encapsulated Bi<sub>2</sub>Te<sub>3</sub><span> core-shell electrocatalyst (Bi</span><sub>2</sub>Te<sub>3</sub>/V<sub>x</sub>-Sb<sub>2</sub>Te<sub>3</sub><span>) has been synthesized by a two-step solvothermal method<span>. V doping adjusts the electronic structure of catalyst, dramatically enhances electric double layer capacitance (</span></span><em>C</em><sub>dl</sub><span>) of the catalyst, decreases charge transfer resistance (</span><em>R</em><sub>ct</sub><span>) of the catalyst and increases carrier concentration of the catalyst. Therefore, the V doping method increases the active sites on the surface of the material, and promotes the charge transfer and electron transport<span> in the HER process. In addition, V doping can also adjust the hydrophilicity of the material surface, promote the release of hydrogen, and quickly re-expose the active sites. Bi</span></span><sub>2</sub>Te<sub>3</sub>/V<sub>x</sub>-Sb<sub>2</sub>Te<sub>3</sub><span> electrocatalysts exhibit brilliant HER activity and high stability in both acidic and alkaline electrolytes. This study uses the strategy of V doping to control the electronic structure of materials, which will provide suggestions for the design and preparation for other high-activity catalysts.</span></p></div>\",\"PeriodicalId\":337,\"journal\":{\"name\":\"International Journal of Hydrogen Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2022-06-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Hydrogen Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S036031992201922X\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S036031992201922X","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Role of V doping in core–shell heterostructured Bi2Te3/Sb2Te3 for hydrogen evolution reaction
Non-noble metal-based materials as low-cost hydrogen evolution reaction (HER) catalysts are key materials for sustainable hydrogen energy production. Bismuth and antimony chalcogenides are among the hopeful candidates to achieve this goal. In this work, a V-doped Sb2Te3 encapsulated Bi2Te3 core-shell electrocatalyst (Bi2Te3/Vx-Sb2Te3) has been synthesized by a two-step solvothermal method. V doping adjusts the electronic structure of catalyst, dramatically enhances electric double layer capacitance (Cdl) of the catalyst, decreases charge transfer resistance (Rct) of the catalyst and increases carrier concentration of the catalyst. Therefore, the V doping method increases the active sites on the surface of the material, and promotes the charge transfer and electron transport in the HER process. In addition, V doping can also adjust the hydrophilicity of the material surface, promote the release of hydrogen, and quickly re-expose the active sites. Bi2Te3/Vx-Sb2Te3 electrocatalysts exhibit brilliant HER activity and high stability in both acidic and alkaline electrolytes. This study uses the strategy of V doping to control the electronic structure of materials, which will provide suggestions for the design and preparation for other high-activity catalysts.
期刊介绍:
The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc.
The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.