An electrochemical supercapacitor device that assumes a significant part in gathering sustainable electrical energy to satisfy the need for worldwide energy utilization. The electrode is one of the fundamental parts of a supercapacitor device, sometimes a single material is deficient in satisfying the electrode material requirement. Hence, the researcher’s key challenge is to produce the Binary/Ternary/Quaternary materials and utilize them to fabricate the electrode with a large surface area, novel shape, and controlled dimensions. In this short review, we outline current developments in the design of nanostructured spinel-based CuCo2O4 electrodes in different Structural dimensions such as zero-, one-, two-, and three-dimensions for the application of supercapacitors. The surface area, charge transport efficiency, and overall electrochemical performance of the supercapacitor are all significantly influenced by the dimensionality of the electrode materials. Supercapacitors can have much higher energy and power densities by designing and using materials with the right dimensions. It has been specifically explained how various dimensional architectures relate to the appropriate electrochemical performances, including specific capacitance, rate capability, cycle stability, power density, and energy density, which may serve as a guideline for the next generation of supercapacitor electrode design.
{"title":"Recent advances of spinel CuCo2O4 in different Structural dimensions (0D-3D) for an electrochemical supercapacitor device: a short research review","authors":"V.A. Kadam, V.L. Patil, S.H. Mujawar, A.P. Torane, L.D. Kadam","doi":"10.1016/j.jallcom.2024.177581","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177581","url":null,"abstract":"An electrochemical supercapacitor device that assumes a significant part in gathering sustainable electrical energy to satisfy the need for worldwide energy utilization. The electrode is one of the fundamental parts of a supercapacitor device, sometimes a single material is deficient in satisfying the electrode material requirement. Hence, the researcher’s key challenge is to produce the Binary/Ternary/Quaternary materials and utilize them to fabricate the electrode with a large surface area, novel shape, and controlled dimensions. In this short review, we outline current developments in the design of nanostructured spinel-based CuCo<sub>2</sub>O<sub>4</sub> electrodes in different Structural dimensions such as zero-, one-, two-, and three-dimensions for the application of supercapacitors. The surface area, charge transport efficiency, and overall electrochemical performance of the supercapacitor are all significantly influenced by the dimensionality of the electrode materials. Supercapacitors can have much higher energy and power densities by designing and using materials with the right dimensions. It has been specifically explained how various dimensional architectures relate to the appropriate electrochemical performances, including specific capacitance, rate capability, cycle stability, power density, and energy density, which may serve as a guideline for the next generation of supercapacitor electrode design.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"19 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673389","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 : 2024-11-19DOI: 10.1016/j.jallcom.2024.177551
R.C. Pan, C.H. Mi, P.F. Han, N.B. Zhang, Y. Cai, L. Lu, S.N. Luo
Mechanical properties and microstructure evolution of as-cast, solution-treated and aged (CoCrNi)94Al3Ti3 medium-entropy alloys (MEAs) are investigated under uniaxial compression at strain rates from 10−3 to 3700 s−1 within temperatures from 123 to 573 K. Compared to the single-phase solution-treated MEA, spherical nanosized particles result in an increase in the yield stress approximately by 55% (to 586 MPa) and 73% (to 655 MPa) for the as-cast and aged (CoCrNi)94Al3Ti3, respectively. At ambient temperature, the as-cast and aged alloys demonstrate significantly higher dynamic strain rate sensitivity. At a fixed strain rate, the yield strengths and flow stresses increase with decreasing temperature for all three alloys. The as-cast and aged alloys exhibit significantly higher yield strength primarily due to precipitation strengthening of the coherent ordered L12 precipitates. Dislocation slip dominates the plastic deformation and leads to the weak but apparent ⟨110⟩ texture along the loading direction, and no deformation twins are observed in all alloys. Besides, Khan-Liu constitutive models are developed and can well describe the plastic flow of three alloys over a wide range of strain rates and temperatures.
{"title":"Effects of strain rate, temperature and microstructure on mechanical properties of (CoCrNi)94Al3Ti3 medium-entropy alloy: Experiments and constitutive modeling","authors":"R.C. Pan, C.H. Mi, P.F. Han, N.B. Zhang, Y. Cai, L. Lu, S.N. Luo","doi":"10.1016/j.jallcom.2024.177551","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177551","url":null,"abstract":"Mechanical properties and microstructure evolution of as-cast, solution-treated and aged (CoCrNi)<sub>94</sub>Al<sub>3</sub>Ti<sub>3</sub> medium-entropy alloys (MEAs) are investigated under uniaxial compression at strain rates from 10<sup>−3</sup> to 3700 s<sup>−1</sup> within temperatures from 123 to 573 K. Compared to the single-phase solution-treated MEA, spherical nanosized particles result in an increase in the yield stress approximately by 55% (to 586 MPa) and 73% (to 655 MPa) for the as-cast and aged (CoCrNi)<sub>94</sub>Al<sub>3</sub>Ti<sub>3</sub>, respectively. At ambient temperature, the as-cast and aged alloys demonstrate significantly higher dynamic strain rate sensitivity. At a fixed strain rate, the yield strengths and flow stresses increase with decreasing temperature for all three alloys. The as-cast and aged alloys exhibit significantly higher yield strength primarily due to precipitation strengthening of the coherent ordered L1<sub>2</sub> precipitates. Dislocation slip dominates the plastic deformation and leads to the weak but apparent ⟨110⟩ texture along the loading direction, and no deformation twins are observed in all alloys. Besides, Khan-Liu constitutive models are developed and can well describe the plastic flow of three alloys over a wide range of strain rates and temperatures.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"230 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673391","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 : 2024-11-18DOI: 10.1016/j.jallcom.2024.177474
Yoona Lee, Seonghoon Yoo, Byungrok Moon, Nokeun Park, Seongmoon Seo, Dongyun Lee, Byeong-Joo Lee, Hyoung Seop Kim, Namhyun Kang
The author regrets the following:<ul><li><span>1)</span><span>I would like to replace the <span><span>Fig. 2</span></span> with the following figure as there is a typo in the original <span><span>Fig. 2</span></span>.<figure><span><img alt="Fig. 2" aria-describedby="cap0005" height="416" src="https://ars.els-cdn.com/content/image/1-s2.0-S0925838824040623-gr1.jpg"/><ol><li><span><span>Download: <span>Download high-res image (520KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span><span><span><p><span>Fig. 2</span>. Weldability and compositional behaviour in GTA welds using CoFeMnNiCu and (CoFeMnNi)<sub>70</sub>Cu<sub>30</sub> fillers: (a) Macroscopical views of the BSE image and (b) compositional behaviours of the cross-sections in transverse GTA welds. Yellow and red dashed lines indicate the fusion line and the location of quantitative EPMA, respectively.</p></span></span></figure></span></li><li><span>2)</span><span>There is a blank space after = in <span><span>Eqs. (2) and (4)</span></span>. The corrected equations are follows:</span></li></ul><span><span><span>(2)</span><span><span style=""></span><span data-mathml='<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mi is="true">δ</mi><mo is="true">=</mo><mn is="true">100</mn><msqrt is="true"><munderover is="true"><mo is="true">∑</mo><mrow is="true"><mi is="true">i</mi><mo is="true">=</mo><mn is="true">1</mn></mrow><mi is="true">n</mi></munderover><msub is="true"><mrow is="true"><mi is="true">C</mi></mrow><mrow is="true"><mi is="true">i</mi></mrow></msub><msup is="true"><mrow is="true"><mfenced open="(" close=")" is="true"><mrow is="true"><mn is="true">1</mn><mo is="true">−</mo><mfrac is="true"><mrow is="true"><msub is="true"><mi is="true">r</mi><mi is="true">i</mi></msub></mrow><mrow is="true"><mover accent="true" is="true"><mi is="true">r</mi><mo is="true">¯</mo></mover></mrow></mfrac></mrow></mfenced></mrow><mn is="true">2</mn></msup></msqrt><mo is="true">,</mo><mspace width="0.25em" is="true" /><mspace width="0.25em" is="true" /><mover accent="true" is="true"><mi is="true">r</mi><mo is="true">¯</mo></mover><mo is="true">=</mo><munderover is="true"><mo is="true">∑</mo><mrow is="true"><mi is="true">i</mi><mo is="true">=</mo><mn is="true">1</mn></mrow><mi is="true">n</mi></munderover><msub is="true">&
{"title":"Corrigendum to “Enhancement on mechanical properties via phase separation induced by Cu-added high-entropy alloy fillers in metastable ferrous medium-entropy alloy welds” [J. Alloy. Compd. 1010 (2025) 177321]","authors":"Yoona Lee, Seonghoon Yoo, Byungrok Moon, Nokeun Park, Seongmoon Seo, Dongyun Lee, Byeong-Joo Lee, Hyoung Seop Kim, Namhyun Kang","doi":"10.1016/j.jallcom.2024.177474","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177474","url":null,"abstract":"The author regrets the following:<ul><li><span>1)</span><span>I would like to replace the <span><span>Fig. 2</span></span> with the following figure as there is a typo in the original <span><span>Fig. 2</span></span>.<figure><span><img alt=\"Fig. 2\" aria-describedby=\"cap0005\" height=\"416\" src=\"https://ars.els-cdn.com/content/image/1-s2.0-S0925838824040623-gr1.jpg\"/><ol><li><span><span>Download: <span>Download high-res image (520KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span><span><span><p><span>Fig. 2</span>. Weldability and compositional behaviour in GTA welds using CoFeMnNiCu and (CoFeMnNi)<sub>70</sub>Cu<sub>30</sub> fillers: (a) Macroscopical views of the BSE image and (b) compositional behaviours of the cross-sections in transverse GTA welds. Yellow and red dashed lines indicate the fusion line and the location of quantitative EPMA, respectively.</p></span></span></figure></span></li><li><span>2)</span><span>There is a blank space after = in <span><span>Eqs. (2) and (4)</span></span>. The corrected equations are follows:</span></li></ul><span><span><span>(2)</span><span><span style=\"\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow is=\"true\"><mi is=\"true\">&#x3B4;</mi><mo is=\"true\">=</mo><mn is=\"true\">100</mn><msqrt is=\"true\"><munderover is=\"true\"><mo is=\"true\">&#x2211;</mo><mrow is=\"true\"><mi is=\"true\">i</mi><mo is=\"true\">=</mo><mn is=\"true\">1</mn></mrow><mi is=\"true\">n</mi></munderover><msub is=\"true\"><mrow is=\"true\"><mi is=\"true\">C</mi></mrow><mrow is=\"true\"><mi is=\"true\">i</mi></mrow></msub><msup is=\"true\"><mrow is=\"true\"><mfenced open=\"(\" close=\")\" is=\"true\"><mrow is=\"true\"><mn is=\"true\">1</mn><mo is=\"true\">&#x2212;</mo><mfrac is=\"true\"><mrow is=\"true\"><msub is=\"true\"><mi is=\"true\">r</mi><mi is=\"true\">i</mi></msub></mrow><mrow is=\"true\"><mover accent=\"true\" is=\"true\"><mi is=\"true\">r</mi><mo is=\"true\">&#xAF;</mo></mover></mrow></mfrac></mrow></mfenced></mrow><mn is=\"true\">2</mn></msup></msqrt><mo is=\"true\">,</mo><mspace width=\"0.25em\" is=\"true\" /><mspace width=\"0.25em\" is=\"true\" /><mover accent=\"true\" is=\"true\"><mi is=\"true\">r</mi><mo is=\"true\">&#xAF;</mo></mover><mo is=\"true\">=</mo><munderover is=\"true\"><mo is=\"true\">&#x2211;</mo><mrow is=\"true\"><mi is=\"true\">i</mi><mo is=\"true\">=</mo><mn is=\"true\">1</mn></mrow><mi is=\"true\">n</mi></munderover><msub is=\"true\">&","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"11 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670666","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 : 2024-11-18DOI: 10.1016/j.jallcom.2024.177648
Maria Rani, Muhammad Mohsin Khan, Arshid Numan, Mohammed Khalid, Syed Mustansar Abbas, Mudassir Iqbal, Muhammad Adil Mansoor
Perovskites have captured the interest of researchers for over a decade due to their high-power conversion efficiency (PCE). These materials boast excellent chemical and physical properties, making them ideal for solar cell production. On a small scale, perovskites are synthesized using various methods such as dual-source vapor deposition, one-step and two-step solution deposition, vapor-assisted solution deposition, and sequential deposition techniques. For large-scale production, industries employ techniques like inkjet printing, drop casting, blade coating, slot-die coating, and spray coating. Despite their potential, perovskite solar cells face significant challenges in commercialization, primarily due to chemical stability issues to only a few months. Therefore, recent research focuses on improving film formation and interfacial engineering to enhance device PCE and stability. To move towards commercialization, it is crucial to address degradation caused by environmental factors such as moisture and UV light through material stability improvements such as encapsulation, interface engineering, and humidity control. This necessitates the development of standardized stability tests and optimized conditions for maximum performance. This review aims to delve into the intricacies of perovskite structures and their fabrication techniques on both small and large scales. It also critically examines the challenges and obstacles in commercializing perovskites. Finally, the review offers insights into future strategies for achieving high PCE in perovskite solar cells, emphasizing the need for advanced materials engineering, robust encapsulation techniques, and scalable, cost-effective deposition methods to enhance device stability, moisture resistance, and overall longevity, paving the way for the commercialization of perovskite-based photovoltaics.
{"title":"Breaking Barriers: Addressing Challenges in Perovskite Solar Cell Development","authors":"Maria Rani, Muhammad Mohsin Khan, Arshid Numan, Mohammed Khalid, Syed Mustansar Abbas, Mudassir Iqbal, Muhammad Adil Mansoor","doi":"10.1016/j.jallcom.2024.177648","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177648","url":null,"abstract":"Perovskites have captured the interest of researchers for over a decade due to their high-power conversion efficiency (PCE). These materials boast excellent chemical and physical properties, making them ideal for solar cell production. On a small scale, perovskites are synthesized using various methods such as dual-source vapor deposition, one-step and two-step solution deposition, vapor-assisted solution deposition, and sequential deposition techniques. For large-scale production, industries employ techniques like inkjet printing, drop casting, blade coating, slot-die coating, and spray coating. Despite their potential, perovskite solar cells face significant challenges in commercialization, primarily due to chemical stability issues to only a few months. Therefore, recent research focuses on improving film formation and interfacial engineering to enhance device PCE and stability. To move towards commercialization, it is crucial to address degradation caused by environmental factors such as moisture and UV light through material stability improvements such as encapsulation, interface engineering, and humidity control. This necessitates the development of standardized stability tests and optimized conditions for maximum performance. This review aims to delve into the intricacies of perovskite structures and their fabrication techniques on both small and large scales. It also critically examines the challenges and obstacles in commercializing perovskites. Finally, the review offers insights into future strategies for achieving high PCE in perovskite solar cells, emphasizing the need for advanced materials engineering, robust encapsulation techniques, and scalable, cost-effective deposition methods to enhance device stability, moisture resistance, and overall longevity, paving the way for the commercialization of perovskite-based photovoltaics.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"109 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665414","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 : 2024-11-18DOI: 10.1016/j.jallcom.2024.177642
Liling Li, Haidong Jiang, Yufa Feng, Jinyun Liao, Hao Li
Catalytic methanolysis of ammonia borane represents a promising technology for in situ hydrogen production. However, the widespread application of this technology is constrained by the prohibitive cost associated with noble metal catalysts. Consequently, the development of cost-effective and robust is essential for commercial scaling of this technology. In this study, a series of NiO-CuO/Fe3O4 catalyst with three-phase interfaces for ammonia borane methanolysis were fabricated by supporting NiO-CuO with Fe3O4. It was demonstrated that the Fe3O4 support in the catalyst could not only modulate the electronic structure of catalyst but also and confer magnetic characteristics upon it. The catalyst bearing a Ni/Cu molar ratio of 2:2 achieved a turnover frequency (TOF) of 13.5 min-1 in ammonia borane methanolysis, along with long-term stability. Furthermore, magnetic characterization confirmed the catalyst’s ferromagnetic properties with a coercivity of 51.8 Oe, facilitating the magnetic separation of the catalyst under an external magnetic field. Through various exhaustive characterizations, it was revealed that abundant interfacial positively charged Ni sites and negatively charged Cu sites in NiO-CuO/Fe3O4 catalyst could activate methanol and ammonia borane, respectively, thus promoting the hydrogen production efficiently. Considering the excellent activity and recyclability of NiO-CuO/Fe3O4, it is anticipated to gain widespread applications in the industrial production of hydrogen from ammonia borane methanolysis.
{"title":"Interface engineering of three-phase NiO-CuO/Fe3O4 heterostructured catalyst for quick hydrogen release from ammonia borane methanolysis","authors":"Liling Li, Haidong Jiang, Yufa Feng, Jinyun Liao, Hao Li","doi":"10.1016/j.jallcom.2024.177642","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177642","url":null,"abstract":"Catalytic methanolysis of ammonia borane represents a promising technology for in situ hydrogen production. However, the widespread application of this technology is constrained by the prohibitive cost associated with noble metal catalysts. Consequently, the development of cost-effective and robust is essential for commercial scaling of this technology. In this study, a series of NiO-CuO/Fe<sub>3</sub>O<sub>4</sub> catalyst with three-phase interfaces for ammonia borane methanolysis were fabricated by supporting NiO-CuO with Fe<sub>3</sub>O<sub>4</sub>. It was demonstrated that the Fe<sub>3</sub>O<sub>4</sub> support in the catalyst could not only modulate the electronic structure of catalyst but also and confer magnetic characteristics upon it. The catalyst bearing a Ni/Cu molar ratio of 2:2 achieved a turnover frequency (TOF) of 13.5<!-- --> <!-- -->min<sup>-1</sup> in ammonia borane methanolysis, along with long-term stability. Furthermore, magnetic characterization confirmed the catalyst’s ferromagnetic properties with a coercivity of 51.8<!-- --> <!-- -->Oe, facilitating the magnetic separation of the catalyst under an external magnetic field. Through various exhaustive characterizations, it was revealed that abundant interfacial positively charged Ni sites and negatively charged Cu sites in NiO-CuO/Fe<sub>3</sub>O<sub>4</sub> catalyst could activate methanol and ammonia borane, respectively, thus promoting the hydrogen production efficiently. Considering the excellent activity and recyclability of NiO-CuO/Fe<sub>3</sub>O<sub>4</sub>, it is anticipated to gain widespread applications in the industrial production of hydrogen from ammonia borane methanolysis.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"171 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665566","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}
For the article “Heterogeneous alloyed CuSnO-DopaCube mediated photo-Fenton and photothermal synergistic catalysis for dye elimination, JALCOM-D-23-05291”, the authors apologize to misuse of wrong images that used in Fig. 6B, which ascribed to the unintentional mistake during data typesetting process. The rearranged right figure is shown here below. The authors promise that the error does not influence the final results and conclusions for this manuscript.
Download: Download high-res image (175KB)
Download: Download full-size image
Fig. 6. B. Detection of ·OH generation through EPR testing.
{"title":"Corrigendum to “Heterogeneous alloyed CuSnO-DopaCube mediated photo-Fenton and photothermal synergistic catalysis for dye elimination” [J. Alloy. Compd. 960 (2023) 170737]","authors":"Jingpi Gao, Qinghao He, Gaofeng Liang, Lingqing Luo, Xiaoran Liu, Kaiyong Cai, Jinghua Li","doi":"10.1016/j.jallcom.2024.177599","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177599","url":null,"abstract":"For the article “Heterogeneous alloyed CuSnO-DopaCube mediated photo-Fenton and photothermal synergistic catalysis for dye elimination, JALCOM-D-23-05291”, the authors apologize to misuse of wrong images that used in <span><span>Fig. 6</span></span>B, which ascribed to the unintentional mistake during data typesetting process. The rearranged right figure is shown here below. The authors promise that the error does not influence the final results and conclusions for this manuscript.<figure><span><img alt=\"Fig. 6\" aria-describedby=\"cap0005\" height=\"280\" src=\"https://ars.els-cdn.com/content/image/1-s2.0-S0925838824041872-gr1.jpg\"/><ol><li><span><span>Download: <span>Download high-res image (175KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span><span><span><p><span>Fig. 6</span>. B. Detection of ·OH generation through EPR testing.</p></span></span></figure>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665563","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 : 2024-11-17DOI: 10.1016/j.jallcom.2024.177635
Cheng Wu, Peiwen Lv, Zhaojie Zhu, Jianfu Li, Chaoyang Tu, Chenlong Chen, G. Lakshminarayana, Hongyan Wang, Yan Wang
Boron nitride (BN) has been a popular material in the field of ultraviolet detection because of its excellent thermal conductivity, high breakdown field strength, high absorption coefficient, and strong resistance to radiation. However, the harsh preparation conditions of its large-scale single crystal films limit the rapid development of its devices. In this work, amorphous BN films were deposited by the magnetron sputtering technique at a relatively low temperatures. On the basis of the films, the asymmetric Schottky junction solar-blind ultraviolet detectors were fabricated by the Ohmic and Schottky contact, respectively. The maximum responsivity and detectivity of the detectors are 6.4 μA/W and 2.5 × 1010 Jones under 20 V bias and 81.1 μW/cm2 ultraviolet light irradiation, respectively. More importantly, the fabricated asymmetric Schottky junction detector also achieves the stable self-powered characteristics due to the presence of its built-in electric field, and the performances are further improved after the rapid thermal annealing. The prepared BN asymmetric Schottky junction detector can operate without the need for the external power supply, which have many advantages such as simplifying the equipment structure and being able to operate in wireless. This work will provide a new reference for the design of the next generation of independent sustainable detectors.
{"title":"Self-Powered Solar-Blind Ultraviolet Detectors Based on the Amorphous Boron Nitride Films","authors":"Cheng Wu, Peiwen Lv, Zhaojie Zhu, Jianfu Li, Chaoyang Tu, Chenlong Chen, G. Lakshminarayana, Hongyan Wang, Yan Wang","doi":"10.1016/j.jallcom.2024.177635","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177635","url":null,"abstract":"Boron nitride (BN) has been a popular material in the field of ultraviolet detection because of its excellent thermal conductivity, high breakdown field strength, high absorption coefficient, and strong resistance to radiation. However, the harsh preparation conditions of its large-scale single crystal films limit the rapid development of its devices. In this work, amorphous BN films were deposited by the magnetron sputtering technique at a relatively low temperatures. On the basis of the films, the asymmetric Schottky junction solar-blind ultraviolet detectors were fabricated by the Ohmic and Schottky contact, respectively. The maximum responsivity and detectivity of the detectors are 6.4 μA/W and 2.5 × 10<sup>10</sup> Jones under 20<!-- --> <!-- -->V bias and 81.1 μW/cm<sup>2</sup> ultraviolet light irradiation, respectively. More importantly, the fabricated asymmetric Schottky junction detector also achieves the stable self-powered characteristics due to the presence of its built-in electric field, and the performances are further improved after the rapid thermal annealing. The prepared BN asymmetric Schottky junction detector can operate without the need for the external power supply, which have many advantages such as simplifying the equipment structure and being able to operate in wireless. This work will provide a new reference for the design of the next generation of independent sustainable detectors.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"12 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665413","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 : 2024-11-17DOI: 10.1016/j.jallcom.2024.177547
XuRi Rao, YuanGe Luo, JiangLong Zhu, Xiaobo Tan, Qian Deng, RuiHeng Li, BangZhou Tian, Ran Ang
The melt-annealing method is currently the main method for preparing the skutterudite materials and devices. However, its extensive utilization is impeded by a time-consuming annealing process. To address this issue, we have developed a melt-quenching-annealing-quenching procedure that significantly shortens the annealing time of Yb-filled CoSb3 skutterudite to only 1 day. Our findings confirm that quenching after annealing effectively promotes the formation of CoSb3 phase. Moreover, the reduced annealing time restricts grain growth. This outcome leads to a evident reduction in lattice thermal conductivity, taking into account the effect of the off-center Yb filler in voids distorting the crystal structure. Ultimately, a competitive zT of ∼1.25 is achieved at 823 K in Yb-filled CoSb3. This work provides a guidance for the rapid preparation of skutterudite by melt-annealing.
{"title":"Accelerated melting annealing synthesis of high-performance filled skutterudite through repeated quenching","authors":"XuRi Rao, YuanGe Luo, JiangLong Zhu, Xiaobo Tan, Qian Deng, RuiHeng Li, BangZhou Tian, Ran Ang","doi":"10.1016/j.jallcom.2024.177547","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177547","url":null,"abstract":"The melt-annealing method is currently the main method for preparing the skutterudite materials and devices. However, its extensive utilization is impeded by a time-consuming annealing process. To address this issue, we have developed a melt-quenching-annealing-quenching procedure that significantly shortens the annealing time of Yb-filled CoSb<ce:inf loc=\"post\">3</ce:inf> skutterudite to only 1 day. Our findings confirm that quenching after annealing effectively promotes the formation of CoSb<ce:inf loc=\"post\">3</ce:inf> phase. Moreover, the reduced annealing time restricts grain growth. This outcome leads to a evident reduction in lattice thermal conductivity, taking into account the effect of the off-center Yb filler in voids distorting the crystal structure. Ultimately, a competitive <ce:italic>zT</ce:italic> of ∼1.25 is achieved at 823 K in Yb-filled CoSb<ce:inf loc=\"post\">3</ce:inf>. This work provides a guidance for the rapid preparation of skutterudite by melt-annealing.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670528","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 : 2024-11-17DOI: 10.1016/j.jallcom.2024.177631
Jinhong Gong, Xuenong Zhang, Shan Xu, Hao Yang, Kun Yan, Xueyun Sun, Dan Su, Hufeng Fang
Metal chalcogenide quantum dots (MCQDs) have received tremendous attention in biomedical field for their fascinating optical properties and the admirable biomolecular modifiability. However, challenged by low stability and notorious biocompatibility, MCQDs make them limited for direct biomedical use. Herein, a novel designed and synthesized poly(allylamine) and cysteine co-capped silver indium sulfide quantum dots (PAA-Cys-AIS QDs) with excellent photostability is reported for the specific rapid detection of Cd2+ and Zn2+ ions. The obtained water-soluble PAA-Cys-AIS QDs emitted a stable orange fluorescence at 625 nm with an average size of 3.639 ± 1.006 nm. The unusual anti-photobleaching property of PAA-Cys-AIS QDs is demonstrated to be owing to the introducing of poly(allylamine) and cysteine, which uniquely increased the crystallinity and hydrodynamic size of the structure system. Unexpectedly, unlike most reported approaches for Cd2+ and Zn2+ detection based on the quenching fluorescence mechanism, the PAA-Cys-AIS QDs showed remarkable and rapid fluorescence enhancement after being exposed to Cd2+ and Zn2+ ions aqueous solutions. Notably, the detection limits of the new probe for Cd2+ and Zn2+ are 175 and 50 nM respectively. Complexation and metal ions doping mechanisms are proposed to be responsible for the enhancement of photoluminescence intensity based on the metal ions capture capacity coming from PAA-Cys-AIS QDs’ intrinsic defects and abundant surface amino functional groups. Moreover, the intracellular photostability and biocompatibility of PAA-Cys-AIS QDs are strong enough to prompt us to investigate the metal ions imaging applications in SH-SY5Y cells to further demonstrate the potential for real-live biomedical applications.
{"title":"Poly(allylamine) and cysteine co-capped silver indium sulfide quantum dots with excellent photostability for specific Cd2+ and Zn2+ detection based on fluorescence enhancement","authors":"Jinhong Gong, Xuenong Zhang, Shan Xu, Hao Yang, Kun Yan, Xueyun Sun, Dan Su, Hufeng Fang","doi":"10.1016/j.jallcom.2024.177631","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177631","url":null,"abstract":"Metal chalcogenide quantum dots (MCQDs) have received tremendous attention in biomedical field for their fascinating optical properties and the admirable biomolecular modifiability. However, challenged by low stability and notorious biocompatibility, MCQDs make them limited for direct biomedical use. Herein, a novel designed and synthesized poly(allylamine) and cysteine co-capped silver indium sulfide quantum dots (PAA-Cys-AIS QDs) with excellent photostability is reported for the specific rapid detection of Cd<ce:sup loc=\"post\">2+</ce:sup> and Zn<ce:sup loc=\"post\">2+</ce:sup> ions. The obtained water-soluble PAA-Cys-AIS QDs emitted a stable orange fluorescence at 625 nm with an average size of 3.639 ± 1.006 nm. The unusual anti-photobleaching property of PAA-Cys-AIS QDs is demonstrated to be owing to the introducing of poly(allylamine) and cysteine, which uniquely increased the crystallinity and hydrodynamic size of the structure system. Unexpectedly, unlike most reported approaches for Cd<ce:sup loc=\"post\">2+</ce:sup> and Zn<ce:sup loc=\"post\">2+</ce:sup> detection based on the quenching fluorescence mechanism, the PAA-Cys-AIS QDs showed remarkable and rapid fluorescence enhancement after being exposed to Cd<ce:sup loc=\"post\">2+</ce:sup> and Zn<ce:sup loc=\"post\">2+</ce:sup> ions aqueous solutions. Notably, the detection limits of the new probe for Cd<ce:sup loc=\"post\">2+</ce:sup> and Zn<ce:sup loc=\"post\">2+</ce:sup> are 175 and 50 nM respectively. Complexation and metal ions doping mechanisms are proposed to be responsible for the enhancement of photoluminescence intensity based on the metal ions capture capacity coming from PAA-Cys-AIS QDs’ intrinsic defects and abundant surface amino functional groups. Moreover, the intracellular photostability and biocompatibility of PAA-Cys-AIS QDs are strong enough to prompt us to investigate the metal ions imaging applications in SH-SY5Y cells to further demonstrate the potential for real-live biomedical applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"197 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670529","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 : 2024-11-17DOI: 10.1016/j.jallcom.2024.177634
Xiancong Chen, Cheng Wang, Haijuan Ju, Xiangrong Li, Yi Qu
Microstructure, room-temperature mechanical properties, and oxidation resistance of Mo-12Si-8B-xTi (x = 10, 20, 30, 40, at.%) alloys fabricated via hot pressing sintering are investigated. 10Ti and 20Ti alloys comprise α-Mo + Mo3Si + Mo5SiB2, whereas 30Ti and 40Ti alloys comprise α-Mo + Mo5SiB2 + Ti5Si3. CALPHAD thermodynamic modeling and EDS indicate a significant increase in Ti solubility in α-Mo and Mo5SiB2 phases with higher Ti content, reaching levels of 30–50%. EBSD analysis reveals evident grain coarsening, the average grain size improves from 1.43 to 2.97 μm. HRTEM characterization demonstrates α-Mo/Mo5SiB2 and α-Mo/Ti5Si3 interfaces are both incoherent. 10Ti alloy exhibits the highest flexural strength of 454 MPa and fracture toughness of 9.9 MPa‧m1/2, while minor differences in fracture toughness are observed among 20–40Ti alloys. The combination of adequate α-Mo matrix, appropriate grain size, and brittle intermetallic phases collectively contribute to determining the strength and toughness. Simultaneous thermal analysis and cyclic oxidation show 40Ti alloy offers the best oxidation resistance at 800–1200 °C, because of the protective TiO2‧SiO2 layer generated through selective oxidation of Ti5Si3 and Ti/Si. Using Pilling-Bedworth ratio as the sole criterion to assess the oxidation resistance is inadequate, as temperature and phase constitution must be considered.
{"title":"Microstructure, room-temperature mechanical properties, and oxidation resistance of Ti-added Mo-Si-B alloys fabricated via hot pressing sintering","authors":"Xiancong Chen, Cheng Wang, Haijuan Ju, Xiangrong Li, Yi Qu","doi":"10.1016/j.jallcom.2024.177634","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.177634","url":null,"abstract":"Microstructure, room-temperature mechanical properties, and oxidation resistance of Mo-12Si-8B-<em>x</em>Ti (<em>x</em> = 10, 20, 30, 40, at.%) alloys fabricated via hot pressing sintering are investigated. 10Ti and 20Ti alloys comprise α-Mo + Mo<sub>3</sub>Si + Mo<sub>5</sub>SiB<sub>2</sub>, whereas 30Ti and 40Ti alloys comprise α-Mo + Mo<sub>5</sub>SiB<sub>2</sub> + Ti<sub>5</sub>Si<sub>3</sub>. CALPHAD thermodynamic modeling and EDS indicate a significant increase in Ti solubility in α-Mo and Mo<sub>5</sub>SiB<sub>2</sub> phases with higher Ti content, reaching levels of 30–50%. EBSD analysis reveals evident grain coarsening, the average grain size improves from 1.43 to 2.97 μm. HRTEM characterization demonstrates α-Mo/Mo<sub>5</sub>SiB<sub>2</sub> and α-Mo/Ti<sub>5</sub>Si<sub>3</sub> interfaces are both incoherent. 10Ti alloy exhibits the highest flexural strength of 454<!-- --> <!-- -->MPa and fracture toughness of 9.9<!-- --> <!-- -->MPa‧m<sup>1/2</sup>, while minor differences in fracture toughness are observed among 20–40Ti alloys. The combination of adequate α-Mo matrix, appropriate grain size, and brittle intermetallic phases collectively contribute to determining the strength and toughness. Simultaneous thermal analysis and cyclic oxidation show 40Ti alloy offers the best oxidation resistance at 800–1200 °C, because of the protective TiO<sub>2</sub>‧SiO<sub>2</sub> layer generated through selective oxidation of Ti<sub>5</sub>Si<sub>3</sub> and Ti/Si. Using Pilling-Bedworth ratio as the sole criterion to assess the oxidation resistance is inadequate, as temperature and phase constitution must be considered.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"46 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665412","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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