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A low-toxicity molecular precursor for nanocrystalline CuInS2 solar cells 用于纳米晶 CuInS2 太阳能电池的低毒性分子前驱体
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-23 DOI: 10.1016/j.matlet.2024.137766
Chao Dong , Rong Liu , Weili Meng
{"title":"A low-toxicity molecular precursor for nanocrystalline CuInS2 solar cells","authors":"Chao Dong ,&nbsp;Rong Liu ,&nbsp;Weili Meng","doi":"10.1016/j.matlet.2024.137766","DOIUrl":"10.1016/j.matlet.2024.137766","url":null,"abstract":"<div><div>Compact and smooth nanocrystalline CuInS<sub>2</sub> thin films were prepared by a low-toxicity molecular precursor solution method at low-temperature and exhibit band gaps of about 1.5 eV, which is promising for photovoltaics. We fabricated a planar heterojunction solar cell configured as FTO/CdS/CuInS<sub>2</sub>/Spiro-OMeTAD/Au. The champion device based on CuInS<sub>2</sub> film annealed at 350 °C yields an average power conversion efficiency of 1.79 % (maximum 1.94 %) and exhibits a good stability.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137766"},"PeriodicalIF":2.7,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic effects of carbon black and electrospun FKM fibers for superior EMI shielding 碳黑和电纺 FKM 纤维的协同效应可实现卓越的 EMI 屏蔽效果
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-22 DOI: 10.1016/j.matlet.2024.137751
Patel Yamini Kumari , Kailash Kantilal Sawant , Alsha Subash , Balasubramanian Kandasubramanian
{"title":"Synergistic effects of carbon black and electrospun FKM fibers for superior EMI shielding","authors":"Patel Yamini Kumari ,&nbsp;Kailash Kantilal Sawant ,&nbsp;Alsha Subash ,&nbsp;Balasubramanian Kandasubramanian","doi":"10.1016/j.matlet.2024.137751","DOIUrl":"10.1016/j.matlet.2024.137751","url":null,"abstract":"<div><div>Technological advancements have exacerbated electromagnetic interference (EMI), necessitating superior shielding materials. This study details the creation of lightweight, flexible fibrous coatings composed of fluoroelastomer (FKM) integrated with conductive carbon black (CB), utilizing electrospinning. The EMI shielding performance of the resultant composite was thoroughly evaluated using the OATS (open area test site) method within the X-band frequency range. Empirical data indicate that the FKM/CB composite fibers achieved excellent shielding performance, with an average shielding effectiveness of −69 dB and a peak of −72 dB at 8.4 GHz. The composite also demonstrated significant radar cross-section (RCS) reduction, enhancing its stealth capabilities and making it a prime candidate for defense applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137751"},"PeriodicalIF":2.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nickel ferrite as an efficient electrocatalyst for alcohol oxidation reactions 镍铁氧体作为酒精氧化反应的高效电催化剂
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-22 DOI: 10.1016/j.matlet.2024.137752
P.C. Nagajyothi , K. Muniratnam , Jaesool Shim
{"title":"Nickel ferrite as an efficient electrocatalyst for alcohol oxidation reactions","authors":"P.C. Nagajyothi ,&nbsp;K. Muniratnam ,&nbsp;Jaesool Shim","doi":"10.1016/j.matlet.2024.137752","DOIUrl":"10.1016/j.matlet.2024.137752","url":null,"abstract":"<div><div>Nickel ferrite (NiFe<sub>2</sub>O<sub>4</sub>) electrocatalyst was synthesized via a simple, rapid hydrothermal method. The electrocatalyst’s composition and structure were analyzed using various techniques. The electrocatalytic activity of NiFe<sub>2</sub>O<sub>4</sub> toward the oxidation of alcohols such as methanol, ethanol, propanol, and isopropanol in an alkaline medium was studied using cyclic voltammetry, linear scan voltammetry, and electrochemical impedance spectroscopy. The methanol oxidation reaction (MOR) exhibited a lower overpotential than the other alcohol oxidation reactions, suggesting that NiFe<sub>2</sub>O<sub>4</sub> is an excellent catalyst for MOR.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137752"},"PeriodicalIF":2.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Defective ZnS yolk-shell nanospheres with sulfur vacancy for efficient sonocatalytic H2 production 具有硫空位的缺陷 ZnS 卵黄壳纳米球用于高效声催化制取 H2
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-22 DOI: 10.1016/j.matlet.2024.137749
Wentao Xu, KeCheng Chen, Xiangge Wang, Xiaojing Zhao, Miaoqiong Xu, Wen-Jie Chen, Xiaoyang Pan
{"title":"Defective ZnS yolk-shell nanospheres with sulfur vacancy for efficient sonocatalytic H2 production","authors":"Wentao Xu,&nbsp;KeCheng Chen,&nbsp;Xiangge Wang,&nbsp;Xiaojing Zhao,&nbsp;Miaoqiong Xu,&nbsp;Wen-Jie Chen,&nbsp;Xiaoyang Pan","doi":"10.1016/j.matlet.2024.137749","DOIUrl":"10.1016/j.matlet.2024.137749","url":null,"abstract":"<div><div>In this study, the defective ZnS yolk shell nanospheres are synthesized through a facile solvothermal method followed by a calcination process to introduce sulfur vacancies. The defective ZnS yolk-shell nanospheres show excellent sonocatalytic performance for hydrogen production, as compared to ZnS nanospheres and other commonly used sonocatalysts. The enhanced sonocatalytic activity is attributed to the synergistic effect of the yolk-shell structure and the introduction of sulfur vacancies. Furthermore, the defective ZnS yolk-shell nanospheres demonstrate good stability for sonocatalytic hydrogen production.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137749"},"PeriodicalIF":2.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boron-modified Ce-Zr mixed oxide catalysts for improved low-temperature NOx reduction
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-22 DOI: 10.1016/j.matlet.2024.137754
Wenhua Wang , Zhanpeng Luo , Qingji Ying , Xiaoqiang Wang
{"title":"Boron-modified Ce-Zr mixed oxide catalysts for improved low-temperature NOx reduction","authors":"Wenhua Wang ,&nbsp;Zhanpeng Luo ,&nbsp;Qingji Ying ,&nbsp;Xiaoqiang Wang","doi":"10.1016/j.matlet.2024.137754","DOIUrl":"10.1016/j.matlet.2024.137754","url":null,"abstract":"<div><div>This study explored the promotional effect of nanometal boron (B) modification on SCR performance over Ce-Zr (CZ) mixed oxide catalysts. Experimental results indicated that the optimal B<sub>0.3</sub>CZ sample achieved over 90 % NO conversion and N<sub>2</sub> selectivity within 240–360 °C, whereas the pristine CZ sample failed to reach complete NO conversion across the same temperature range. Characterization studies revealed that boron addition formed interactions with Ce/Zr and heightened surface acid strength. Importantly, these interactions enhanced redox capacity and increased surface ratios of Ce<sup>3+</sup> and O<sub>β</sub>, thereby boosting low-medium SCR activity. Additionally, the strengthened surface acidity improved NH<sub>3</sub> adsorption, ensuring high N<sub>2</sub> selectivity at elevated temperatures. Overall, nonmetal boron modification might be one promising strategy for promoting catalytic performance in SCR systems.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137754"},"PeriodicalIF":2.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Validation of quantum espresso software in estimating the optical parameters of CaAlSiN3 crystal 量子意式咖啡软件在估算 CaAlSiN3 晶体光学参数方面的验证
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-22 DOI: 10.1016/j.matlet.2024.137753
Brindha V.G. Mohan , Kanimozhi Balakrishnan
{"title":"Validation of quantum espresso software in estimating the optical parameters of CaAlSiN3 crystal","authors":"Brindha V.G. Mohan ,&nbsp;Kanimozhi Balakrishnan","doi":"10.1016/j.matlet.2024.137753","DOIUrl":"10.1016/j.matlet.2024.137753","url":null,"abstract":"<div><div>This communication presents a theoretical analysis of certain optical properties of the CaAlSiN<sub>3</sub> (CASN) crystal through first principles calculation. For the first time, this work validates the optical properties of the crystal performed using Quantum ESPRESSO (Acronym for opEn-Source Package for Research in Electronic Structure, Simulation, and Optimization) Plane Wave Self Consistent Field (PWscf). The calculated optical joint density of states show that the absorption begins at 4.8 eV and exhibits two sharp peaks and one broad peak at 48 nm, 64 nm, and 170 nm. The absorption range is in good agreement with our experimental observations. The dielectric function shows electric polarization between the 2<em>p</em> state of nitrogen and 3<em>d</em> state of calcium. The crystal’s static refractive index is 1.87 with a maximum value of 6.4 in the visible region, which is optimal for optical devices. The absorption coefficient confirms experimentally comparable optical states with no notable anisotropy.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137753"},"PeriodicalIF":2.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Banana fiber with madar fiber composites for sustainable printed circuit boards 用于可持续印刷电路板的香蕉纤维与马达纤维复合材料
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-22 DOI: 10.1016/j.matlet.2024.137750
S. Omprakasam , P. Vishnu , B.M. Ishanna , S. Abinaya Sree , R. Divya Rani
{"title":"Banana fiber with madar fiber composites for sustainable printed circuit boards","authors":"S. Omprakasam ,&nbsp;P. Vishnu ,&nbsp;B.M. Ishanna ,&nbsp;S. Abinaya Sree ,&nbsp;R. Divya Rani","doi":"10.1016/j.matlet.2024.137750","DOIUrl":"10.1016/j.matlet.2024.137750","url":null,"abstract":"<div><div>This research explores plantain banana and madar fiber composites (BMFC) as sustainable alternatives to plastic-based printed circuit boards (PCBs). The study combines banana fibers (40 %), madar fibers (20 %), and epoxy resin (40 %) to create eco-friendly PCBs using materials abundant in Tamil Nadu, India. Testing revealed promising mechanical and electrical properties: tensile strength (22.64 MPa), flexural strength (34.56 MPa), impact resistance (3.12 KJ/m<sup>2</sup>), peel strength (4.68 N/mm), water absorption (3.54 %), dielectric constant (3.6 at 25 °C), temperature stability (±1.7 %), and signal integrity (−3.2 dB). Results indicate BMFC’s potential as a viable, sustainable alternative to conventional PCBs.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"380 ","pages":"Article 137750"},"PeriodicalIF":2.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of FA and HPMC on the fresh properties and anisotropy of 3D printing engineered cementitious composites (3DP-ECC) FA 和 HPMC 对三维打印工程水泥基复合材料（3DP-ECC）新鲜特性和各向异性的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-21 DOI: 10.1016/j.matlet.2024.137748
Yali Ge , Jie Yao
{"title":"Influence of FA and HPMC on the fresh properties and anisotropy of 3D printing engineered cementitious composites (3DP-ECC)","authors":"Yali Ge ,&nbsp;Jie Yao","doi":"10.1016/j.matlet.2024.137748","DOIUrl":"10.1016/j.matlet.2024.137748","url":null,"abstract":"<div><div>To investigate the effect of material compositions on the fresh properties and anisotropy of 3DP-ECC, the shape retention and the anisotropy of the compressive strength of 3DP-ECC with different contents of fly ash (FA) and Hydroxypropyl methyl cellulose (HPMC) were studied. The research results indicated that FA could weaken the shape retention, but HPMC significantly enhanced the shape retention of the fresh slurry of 3DP-ECC. The compressive strength in different directions was ranked as Z &gt; Y &gt; X. With the increase of dosage (FA/HPMC), the isotropy in the compressive strength of 3DP-ECC with HPMC decreased, but the difference of 3DP-ECC with FA became more obvious gradually.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"381 ","pages":"Article 137748"},"PeriodicalIF":2.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Surface-dominated sodium storage enabled by TiO2 nanosheets with 84 % exposure of (0 0 1) facets for high-performance Na-ion battery anodes 表面占主导地位的钠储存技术--用于高性能钠离子电池阳极的二氧化钛纳米片，其（0 0 1）面的暴露率高达 84
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-21 DOI: 10.1016/j.matlet.2024.137737
Yuzhu Li, Yuanfei Gao, Xuyang Li, Jiahao Zhang, Xueke Zhang, Dan Zhang
{"title":"Surface-dominated sodium storage enabled by TiO2 nanosheets with 84 % exposure of (0 0 1) facets for high-performance Na-ion battery anodes","authors":"Yuzhu Li,&nbsp;Yuanfei Gao,&nbsp;Xuyang Li,&nbsp;Jiahao Zhang,&nbsp;Xueke Zhang,&nbsp;Dan Zhang","doi":"10.1016/j.matlet.2024.137737","DOIUrl":"10.1016/j.matlet.2024.137737","url":null,"abstract":"<div><div>Anatase titanium dioxide (TiO<sub>2</sub>) has garnered enormous attention as a promising anode material for sodium-ion batteries (SIBs), owing to its non-toxicity, superior structural stability, and cost-effectiveness. Nevertheless, its intrinsic low electrical conductivity poses a substantial challenge to its practical applications. Here, the ultrathin TiO<sub>2</sub> nanosheets were obtained. The TiO<sub>2</sub> nanosheets with a thickness of ∼8 nm and exposed 84 % (0<!--> <!-->0<!--> <!-->1) facet. The exposed (0<!--> <!-->0<!--> <!-->1) crystal facets and ultrathin nanosheet structure provide abundant active sites for Na-ion adsorption, shortens ion diffusion pathways, enhances reaction kinetics, and significantly boosts the pseudocapacitive effect. This synergistic strategy of exposed (0<!--> <!-->0<!--> <!-->1) facet with nanosheets structure leads to an exceptional capacity of 177.1 mAh/g at 0.1 A/g, and 59 % capacity retention at 5 A/g. This work will contribute to the understanding of facet-dependent electrochemical behavior anode materials for high-performance SIBs.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"380 ","pages":"Article 137737"},"PeriodicalIF":2.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of ultrathin β-W nanowires grown in superfluid helium 超流体氦中生长的超细β-W 纳米线的研究
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-21 DOI: 10.1016/j.matlet.2024.137746
R.E. Boltnev , A.V. Karabulin , I.N. Krushinskaya , V.I. Matyushenko , A.A. Pelmenev , I.I. Khodos
{"title":"Investigation of ultrathin β-W nanowires grown in superfluid helium","authors":"R.E. Boltnev ,&nbsp;A.V. Karabulin ,&nbsp;I.N. Krushinskaya ,&nbsp;V.I. Matyushenko ,&nbsp;A.A. Pelmenev ,&nbsp;I.I. Khodos","doi":"10.1016/j.matlet.2024.137746","DOIUrl":"10.1016/j.matlet.2024.137746","url":null,"abstract":"<div><div>Bundles of nanowires with diameters 2 ÷ 5 nm were obtained by laser ablation of a tungsten target immersed in superfluid helium. The morphology and structure of the nanowires were studied by means of transmission electron microscopy. It was found that the tungsten nanowires were formed in the β-phase. The thermal stability of the β-W nanowires was studied. The electrical resistance of the bundles manifested a very weak dependence on temperature with the range from 5 up to 290 К at helium gas pressure 1 bar.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"380 ","pages":"Article 137746"},"PeriodicalIF":2.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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