{"title":"通过将 Sm 掺杂策略用于 OER，增强锰碲的电催化特性","authors":"Aqsa Maheen, Sarah A. Alsalhi, Kiran Tahir, Abhinav Kumar, RSK Sharma, Piyus Kumar Pathak, Suman Saini, Vivek Kumar Pandey, Rajesh Haldhar","doi":"10.1007/s10971-025-06670-3","DOIUrl":null,"url":null,"abstract":"<div><p>The primary focus for hydrogen (H<sub>2</sub>) energy production is to develop economical and efficient catalysts. This study described hydrothermal synthesis of samarium (Sm) doped manganese telluride (MnTe) in which Sm-doping significantly improved MnTe’s OER performance in aqueous basic medium (1.0 M KOH). Several investigations revealed that Sm-doped MnTe had an orthorhombic structure, an outstanding surface area of 45 m<sup>2</sup>/g, and morphology of highly agglomerated nanoparticles. The optimized Sm-doped MnTe demonstrates best OER activity compared to pure MnTe exhibits a reduced OER onset potential of 1.44 V, overpotential (177 mV) at 10 mA/cm<sup>2</sup>, minimal Tafel value (34 mV/dec), and small charge-transfer resistance (0.06 Ω) respectively. It demonstrates durability over a period of 40 h and retains stability even after completing 3000 cycles. These findings highlight that integration of rare-earth dopant samarium (Sm) into metal tellurides can be effective in improving their performance in optimizing the OER for energy conversion applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"114 2","pages":"496 - 507"},"PeriodicalIF":2.3000,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancement of MnTe electrocatalytic properties via Sm doping strategy employed for OER application\",\"authors\":\"Aqsa Maheen, Sarah A. Alsalhi, Kiran Tahir, Abhinav Kumar, RSK Sharma, Piyus Kumar Pathak, Suman Saini, Vivek Kumar Pandey, Rajesh Haldhar\",\"doi\":\"10.1007/s10971-025-06670-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The primary focus for hydrogen (H<sub>2</sub>) energy production is to develop economical and efficient catalysts. This study described hydrothermal synthesis of samarium (Sm) doped manganese telluride (MnTe) in which Sm-doping significantly improved MnTe’s OER performance in aqueous basic medium (1.0 M KOH). Several investigations revealed that Sm-doped MnTe had an orthorhombic structure, an outstanding surface area of 45 m<sup>2</sup>/g, and morphology of highly agglomerated nanoparticles. The optimized Sm-doped MnTe demonstrates best OER activity compared to pure MnTe exhibits a reduced OER onset potential of 1.44 V, overpotential (177 mV) at 10 mA/cm<sup>2</sup>, minimal Tafel value (34 mV/dec), and small charge-transfer resistance (0.06 Ω) respectively. It demonstrates durability over a period of 40 h and retains stability even after completing 3000 cycles. These findings highlight that integration of rare-earth dopant samarium (Sm) into metal tellurides can be effective in improving their performance in optimizing the OER for energy conversion applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":664,\"journal\":{\"name\":\"Journal of Sol-Gel Science and Technology\",\"volume\":\"114 2\",\"pages\":\"496 - 507\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-02-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sol-Gel Science and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10971-025-06670-3\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-025-06670-3","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
摘要
氢（H2）能源生产的首要重点是开发经济高效的催化剂。本研究描述了水热合成钐（Sm）掺杂碲化锰（MnTe），其中Sm掺杂显著提高了MnTe在碱性水介质（1.0 M KOH）中的OER性能。多项研究表明，sm掺杂的MnTe具有正交结构，具有45 m2/g的优异表面积，并且具有高度团聚的纳米颗粒形态。与纯MnTe相比，优化后的sm掺杂MnTe表现出最佳的OER活性，其OER起始电位降低了1.44 V，过电位（177 mV）为10 mA/cm2， Tafel值最小（34 mV/dec），电荷转移电阻小（0.06 Ω）。它在40小时内表现出耐久性，即使在完成3000次循环后仍保持稳定性。这些发现突出表明，将稀土掺杂剂钐（Sm）集成到金属碲化物中可以有效地改善其性能，优化能量转换应用的OER。图形抽象
Enhancement of MnTe electrocatalytic properties via Sm doping strategy employed for OER application
The primary focus for hydrogen (H2) energy production is to develop economical and efficient catalysts. This study described hydrothermal synthesis of samarium (Sm) doped manganese telluride (MnTe) in which Sm-doping significantly improved MnTe’s OER performance in aqueous basic medium (1.0 M KOH). Several investigations revealed that Sm-doped MnTe had an orthorhombic structure, an outstanding surface area of 45 m2/g, and morphology of highly agglomerated nanoparticles. The optimized Sm-doped MnTe demonstrates best OER activity compared to pure MnTe exhibits a reduced OER onset potential of 1.44 V, overpotential (177 mV) at 10 mA/cm2, minimal Tafel value (34 mV/dec), and small charge-transfer resistance (0.06 Ω) respectively. It demonstrates durability over a period of 40 h and retains stability even after completing 3000 cycles. These findings highlight that integration of rare-earth dopant samarium (Sm) into metal tellurides can be effective in improving their performance in optimizing the OER for energy conversion applications.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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