Pub Date : 2026-03-23DOI: 10.1016/j.jallcom.2026.187557
Xinwei Wang, Zhonglin Sun, Shijun Lin, Hongxiang Bi, Ze Yang, Shuaibo Zhou, Weifeng Yang
{"title":"Facilitating flat-band voltage shifts of 4H-SiC MOS capacitors by HfO2/SiO2 laminated stacks with multiple interfacial dipole layers","authors":"Xinwei Wang, Zhonglin Sun, Shijun Lin, Hongxiang Bi, Ze Yang, Shuaibo Zhou, Weifeng Yang","doi":"10.1016/j.jallcom.2026.187557","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.187557","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"19 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147502102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-22DOI: 10.1016/j.jallcom.2026.187514
Uqba Khalid, Khuram Shahzad Ahmad, Jehad S. Al-Hawadi, Amal BaQais, Ram K. Gupta, Bhumikaben Makawana, Alisher Abduvokhidov, Sanjarbek Madaminov
Researchers are actively developing cost-effective metal sulfide materials to address the growing demand for efficient energy storage and conversion technologies. In this work, pristine and Yb-incorporated Cs₂S–Ti₂S–FeS–Sb₂S₃ quaternary multi-metal sulfide composites were synthesized using a single-source precursor approach with diethyl dithiocarbamate as a chelating agent. Their structural, optical, and morphological properties were examined through FTIR, UV–visible spectroscopy, XRD, and SEM analyses. The optical band gap value obtained for the pristine Cs₂S–Ti₂S–FeS–Sb₂S₃ composite was 3.50 eV, whereas that of the Yb-incorporated composite was 3.39 eV. XRD analysis confirmed the phase formation with average crystallite sizes of 46 nm for the pristine sample and 28.39 nm for the Yb-incorporated Cs₂S–Ti₂S–FeS–Sb₂S₃ composite. Electrochemical tests were carried out using a three-electrode system in 1 M KOH electrolyte. The Yb-incorporated electrode delivered a higher specific capacitance of 113.43 F g⁻¹ and a much lower series resistance of 1.08 Ω compared with the pristine Cs₂S–Ti₂S–FeS–Sb₂S₃ electrode. In contrast, the pristine electrode exhibited superior catalytic activity by achieving 10 mA cm⁻² at overpotentials of 330 mV for OER and 190 mV for HER, with low Tafel slopes of 37.51 and 92.7 mV dec⁻¹, respectively. Collectively, these findings highlight the potential of quaternary multi-metal sulfide composites as practical and economical electrode materials for future energy technologies.
{"title":"Comparative study of pristine and Yb-incorporated quaternary multimetal sulfide composites for supercapacitor and water-splitting applications","authors":"Uqba Khalid, Khuram Shahzad Ahmad, Jehad S. Al-Hawadi, Amal BaQais, Ram K. Gupta, Bhumikaben Makawana, Alisher Abduvokhidov, Sanjarbek Madaminov","doi":"10.1016/j.jallcom.2026.187514","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.187514","url":null,"abstract":"Researchers are actively developing cost-effective metal sulfide materials to address the growing demand for efficient energy storage and conversion technologies. In this work, pristine and Yb-incorporated Cs₂S–Ti₂S–FeS–Sb₂S₃ quaternary multi-metal sulfide composites were synthesized using a single-source precursor approach with diethyl dithiocarbamate as a chelating agent. Their structural, optical, and morphological properties were examined through FTIR, UV–visible spectroscopy, XRD, and SEM analyses. The optical band gap value obtained for the pristine Cs₂S–Ti₂S–FeS–Sb₂S₃ composite was 3.50<!-- --> <!-- -->eV, whereas that of the Yb-incorporated composite was 3.39<!-- --> <!-- -->eV. XRD analysis confirmed the phase formation with average crystallite sizes of 46<!-- --> <!-- -->nm for the pristine sample and 28.39<!-- --> <!-- -->nm for the Yb-incorporated Cs₂S–Ti₂S–FeS–Sb₂S₃ composite. Electrochemical tests were carried out using a three-electrode system in 1<!-- --> <!-- -->M KOH electrolyte. The Yb-incorporated electrode delivered a higher specific capacitance of 113.43<!-- --> <!-- -->F<!-- --> <!-- -->g⁻¹ and a much lower series resistance of 1.08 Ω compared with the pristine Cs₂S–Ti₂S–FeS–Sb₂S₃ electrode. In contrast, the pristine electrode exhibited superior catalytic activity by achieving 10<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻² at overpotentials of 330<!-- --> <!-- -->mV for OER and 190<!-- --> <!-- -->mV for HER, with low Tafel slopes of 37.51 and 92.7<!-- --> <!-- -->mV dec⁻¹, respectively. Collectively, these findings highlight the potential of quaternary multi-metal sulfide composites as practical and economical electrode materials for future energy technologies.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"16 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147495470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Developing efficient and durable bifunctional electrocatalysts is of critical importance for achieving sustainable hydrogen production via water electrolysis. Herein, we report the synthesis of a hybrid catalyst consisting of a NiFe layered double hydroxide (NiFe-LDH) integrated with ZIF-67 (ZIF-67@NiFe-LDH). The incorporation of ZIF-67 enhances the electronic conductivity, increases the accessible active surface area, and improves the structural stability of NiFe-LDH. The ZIF-67@NiFe-LDH catalyst exhibited outstanding bifunctional electrocatalytic activity, requiring overpotentials of 280 and 126 mV at a current density of 10 mA cm-2 for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. Furthermore, the catalyst maintained excellent stability over 70 h of continuous operation at 10 mA cm⁻², with negligible potential decay. A two-cell electrolyzer was assembled using the ZIF-67@NiFe-LDH catalyst as both cathode and anode. The catalyst exhibited an outstanding potential of 1.61 V, maintaining exceptionally stable activity for 70 h. Furthermore, the ZIF-67@NiFe-LDH electrolyzer showed an estimated Faradaic efficiency of 89.42% toward H2 production, revealing its high energy conversion efficiency. These results highlight the advantages of combining LDH materials with metal–organic framework derivatives to develop advanced, cost-effective, and durable catalyst materials for sustainable energy conversion.
开发高效、耐用的双功能电催化剂是实现水电解可持续制氢的关键。本文报道了一种由NiFe层状双氢氧化物（NiFe- ldh）与ZIF-67 （ZIF-67@NiFe-LDH）结合组成的杂化催化剂的合成。ZIF-67的掺入提高了NiFe-LDH的电子导电性，增加了可达活性表面积，提高了NiFe-LDH的结构稳定性。ZIF-67@NiFe-LDH催化剂表现出优异的双功能电催化活性，在10 mA cm-2的电流密度下，析氧反应（OER）和析氢反应（HER）分别需要280和126 mV的过电位。此外，该催化剂在10 mA cm（⁻²）下连续工作70小时内保持了良好的稳定性，其潜在的衰变可以忽略不计。使用ZIF-67@NiFe-LDH催化剂作为阴极和阳极，组装了一个双电池电解槽。催化剂的电势为1.61 V，在70 h内保持了异常稳定的活性。此外，ZIF-67@NiFe-LDH电解槽对H2的法拉第效率估计为89.42%，表明其具有较高的能量转换效率。这些结果突出了LDH材料与金属有机框架衍生物相结合的优势，可以开发出先进、经济、耐用的催化剂材料，用于可持续的能量转换。
{"title":"Revealing the synergetic effects of ZIF-67@NiFe-LDH heterostructure for the boosted bifunctional water electrolysis","authors":"Karuppathevan Ramki, Athibala Mariappan, Sekar Madhu, Ranjith Kumar Dharman, Huang-Mu Lo, Tae Hwan Oh","doi":"10.1016/j.jallcom.2026.187539","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.187539","url":null,"abstract":"Developing efficient and durable bifunctional electrocatalysts is of critical importance for achieving sustainable hydrogen production <em>via</em> water electrolysis. Herein, we report the synthesis of a hybrid catalyst consisting of a NiFe layered double hydroxide (NiFe-LDH) integrated with ZIF-67 (ZIF-67@NiFe-LDH). The incorporation of ZIF-67 enhances the electronic conductivity, increases the accessible active surface area, and improves the structural stability of NiFe-LDH. The ZIF-67@NiFe-LDH catalyst exhibited outstanding bifunctional electrocatalytic activity, requiring overpotentials of 280 and 126<!-- --> <!-- -->mV at a current density of 10<!-- --> <!-- -->mA<!-- --> <!-- -->cm<sup>-2</sup> for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. Furthermore, the catalyst maintained excellent stability over 70<!-- --> <!-- -->h of continuous operation at 10<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻², with negligible potential decay. A two-cell electrolyzer was assembled using the ZIF-67@NiFe-LDH catalyst as both cathode and anode. The catalyst exhibited an outstanding potential of 1.61<!-- --> <!-- -->V, maintaining exceptionally stable activity for 70<!-- --> <!-- -->h. Furthermore, the ZIF-67@NiFe-LDH electrolyzer showed an estimated Faradaic efficiency of 89.42% toward H<sub>2</sub> production, revealing its high energy conversion efficiency. These results highlight the advantages of combining LDH materials with metal–organic framework derivatives to develop advanced, cost-effective, and durable catalyst materials for sustainable energy conversion.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"15 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147496633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mechanical and Thermal Performance of Architected Titanium Lattices and Titanium-Aluminum Interpenetrating Phase Composites","authors":"Abdulrahman Jaber, Agyapal Singh, Nikolaos Karathanasopoulos","doi":"10.1016/j.jallcom.2026.187548","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.187548","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"16 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147495381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Variant selection of α phase and mechanical properties in laser powder bed fusion Ti-6.5Al-2Zr-1Mo-1V alloy before and after thermomechanical processing","authors":"Tao. Wang, Zhenwen. Yang, Jiayang. Lu, Dehao. Kong, Ming. Lou, Ying. Wang, Baoming Gong, Yongbing. Li","doi":"10.1016/j.jallcom.2026.187551","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.187551","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"92 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147495385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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