Materials Letters最新文献_第3页

Atomic-scale insight into the effect of graphene on the tribological behavior of high-entropy alloys

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-18 DOI: 10.1016/j.matlet.2025.138252

Xin-Yi Song , Hong-Liang Zhao , Wei Cheng , Xin-Gong Li , Jin-Peng Zhu , Yu Zhang , Guan Liu , Xiu-Bo Liu

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Fabrication and characterization of free-standing α-MnO2/AC composite electrodes for Na-Ion batteries

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-17 DOI: 10.1016/j.matlet.2025.138253

Ali Ahmed Aldarmaki, Amarsingh Bhabu Kanagaraj, Daniel S. Choi

{"title":"Fabrication and characterization of free-standing α-MnO2/AC composite electrodes for Na-Ion batteries","authors":"Ali Ahmed Aldarmaki, Amarsingh Bhabu Kanagaraj, Daniel S. Choi","doi":"10.1016/j.matlet.2025.138253","DOIUrl":"10.1016/j.matlet.2025.138253","url":null,"abstract":"<div><div>The rapid growth of the date palm industry in the United Arab Emirates (UAE) results in significant biomass waste, particularly from leaflets and fronds. This study presents a sustainable approach to repurposing date palm biomass by synthesizing activated carbon (AC) from waste date palm leaves and integrating it with alpha-phase manganese dioxide (α-MnO<sub>2</sub>) to fabricate a composite anode material for sodium-ion batteries (NIBs). A flexible, free-standing α-MnO<sub>2</sub>/AC composite electrode was fabricated after a two-step hydrothermal method. Scanning electron microscope (SEM) analysis reveals the formation of nanostructured α-MnO<sub>2</sub> embedded within the porous AC matrix. Electrochemical testing reveals that the composite anode exhibits a discharge capacity of 466 mAh/g at a current density of 50 mA/g, with remarkable cycling stability and a consistent coulombic efficiency of 100 %. This work demonstrates a sustainable use of biomass waste for energy storage applications, providing an eco-friendly solution for high-capacity, long-cycle NIBs.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"386 ","pages":"Article 138253"},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429862","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}

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Preparation and anti-corrosion properties of superamphiphobic aluminum alloy surfaces by iron salt etching 铁盐蚀刻法制备超疏磷铝合金表面及其抗腐蚀性能

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-17 DOI: 10.1016/j.matlet.2025.138257

Xueyuan Jia, Yacheng Xu, Rongjie Gao

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Insights about ionic migration in perovskite solar cells using electrochemical impedance spectroscopy

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-17 DOI: 10.1016/j.matlet.2025.138255

Lucas Polimante, Thayna M.G. dos Santos, Daniel Z. Florio, Andre S. Polo

{"title":"Insights about ionic migration in perovskite solar cells using electrochemical impedance spectroscopy","authors":"Lucas Polimante, Thayna M.G. dos Santos, Daniel Z. Florio, Andre S. Polo","doi":"10.1016/j.matlet.2025.138255","DOIUrl":"10.1016/j.matlet.2025.138255","url":null,"abstract":"<div><div>Perovskite Solar Cells are an emerging renewable energy technology for the future due to their high efficiency in converting light into electricity. However, these devices suffer from durability issues ascribed to ionic migration, and Electrochemical Impedance Spectroscopy (EIS) is a powerful tool for identifying and quantifying this process. In this work, Perovskite Solar Cells (PSCs) were prepared using two different perovskite compositions, first only with methylammonium (MAPI), and then with a mixture of 1:1 methylammonium and formamidinium (MA<sub>0.5</sub>FA<sub>0.5</sub>PI), which is known to be more durable than the first one. The PSCs exhibited reproducible photovoltaic parameters, resulting in a PhotoConversion Efficiency (PCE) average of 13 % using both perovskites. EIS of PSCs using MAPI and MA<sub>0.5</sub>FA<sub>0.5</sub>PI exhibited two arcs in their Nyquist diagrams, which were fitted using a Voight circuit. The high-frequency region of MAPI and MA<sub>0.5</sub>FA<sub>0.5</sub>PI samples exhibited similar time constants of 17.7 and 12.8 µs, respectively, ascribed to electronic processes at the PSC interfaces, following the PCEs determined. The constant phase element of the low-frequency region exhibited time constants of 107.5 and 301.3 ms, respectively for MAPI and MA<sub>0.5</sub>FA<sub>0.5</sub>PI. This time constant is associated with ion migration processes responsible for inducing defects, consequently decreasing the durability of solar cells. Thus, it is observed that the presence of formamidinium cations increases the time constant determined for MA<sub>0.5</sub>FA<sub>0.5</sub>PI due to a slower ionic migration, leading to a more durable perovskite.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"387 ","pages":"Article 138255"},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143473959","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}

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Facile hydrothermal synthesis of high-performance GQD-CuO microflower composite anode for lithium-ion batteries

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-17 DOI: 10.1016/j.matlet.2025.138254

Jongmin Kim , Yongcheol Jo , Sangeun Cho

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Influence of high-energy ball milling on the Cr dissolution and microstructure evolution in Al-Cr alloys

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-17 DOI: 10.1016/j.matlet.2025.138258

Andrey G. Mochugovskiy , Olesya Troshkova , Natalia Yu. Tabachkova , Olga A. Yakovtseva , Alexey S. Prosviryakov , Anastasia V. Mikhaylovskaya

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Effect of annealing on microstructure and magnetic properties of AISI 430 steel

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-17 DOI: 10.1016/j.matlet.2025.138249

P.A.V. Sidhartha , Subrata Chakrabarti , Lagudu Yerrinaidu , N. Venkata Sunil Sai , K. Jalaja , M. Kodeeswaran , Aloke Kumar , Balaram Sahoo

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Effects of laser energy density on the defects, microstructure and mechanical property of Zn-Mn alloy in selective laser melting

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-16 DOI: 10.1016/j.matlet.2025.138247

Wenwen Yan , Xiaotong Lu , Lan Wang , Mi Chen , Wenhao Zhou , Jianye Han , Lei Luo , Sen Yu

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Phosphorus-doped torreya shell-derived hard carbon anodes for ultra-low capacity decay rate of sodium-ion batteries

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-16 DOI: 10.1016/j.matlet.2025.138250

Zibin Xu , Jun Wu , Haonan Cui , Junming Xu , Weiqin Sheng , Wenbin Ni , Xiaochong Zhou

{"title":"Phosphorus-doped torreya shell-derived hard carbon anodes for ultra-low capacity decay rate of sodium-ion batteries","authors":"Zibin Xu , Jun Wu , Haonan Cui , Junming Xu , Weiqin Sheng , Wenbin Ni , Xiaochong Zhou","doi":"10.1016/j.matlet.2025.138250","DOIUrl":"10.1016/j.matlet.2025.138250","url":null,"abstract":"<div><div>Hard carbon anodes for sodium-ion batteries (SIBs) still suffer from poor initial coulombic efficiency and an ambiguous Na<sup>+</sup> storage mechanism. Here, we proposed a novel phosphorus-doped torreya shell-derived hard carbon (P-TSHC) as an anode for SIBs via a feasible two-step carbonization technique. Effects of P contents in hard carbon on porous structure, plane d-spacing, and electrochemical properties were investigated. In particular, P-TSHC15 exhibits the most excellent electrochemical performance with a superior rate capability up to 8 A g<sup>−1</sup> and an ultra-low capacity decay rate of 0.075 % per cycle within 1000 cycles at 1 A g<sup>−1</sup><sub>.</sub> This should be mainly attributed to P-doping, which expands the interlayer spacing for better Na<sup>+</sup> accommodation in mesoporous filling mechanism, generates more defects and specific surface areas, and provides transport channels for Na<sup>+</sup>, thereby increasing the low-voltage plateau capacity. This work will provide a route for further property optimization of biomass hard carbon for SIBs.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"386 ","pages":"Article 138250"},"PeriodicalIF":2.7,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430325","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

Fast laser-assisted electrode drying: Probing penetration effects with a laser-electrode interaction model

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-02-16 DOI: 10.1016/j.matlet.2025.138251

Yaohong Xiao, Jinrong Su, Hossein Abbasi, Hanghang Yan, Xinxin Yao, Lei Chen

{"title":"Fast laser-assisted electrode drying: Probing penetration effects with a laser-electrode interaction model","authors":"Yaohong Xiao, Jinrong Su, Hossein Abbasi, Hanghang Yan, Xinxin Yao, Lei Chen","doi":"10.1016/j.matlet.2025.138251","DOIUrl":"10.1016/j.matlet.2025.138251","url":null,"abstract":"<div><div>Laser-assisted electrode drying offers substantial advantages over traditional convection drying to meet the growing demand for cost-effective battery manufacturing, including significant energy savings and reduced facility space. Unlike traditional electrode drying methods, laser heating involves volumetric interactions due to its electromagnetic wave nature, which is often ignored and simplified as surface heating. Meanwhile, experimental monitoring is challenging due to the transient nature of laser drying, a laser-electrode interaction model was thus developed to explore laser penetration effects during electrode drying by simulating the interaction between laser irradiation and electrode consisting of particles and solvent. The study reveals that volumetric heating is primarily achieved by the direct interaction and heating of all AM particles by the penetrated laser and indirectly solvent heating by AM particles in seconds. Notably, peak power density and temperature occur approximately 10 μm beneath the electrode surface, independent of electrode thickness or laser power. Moreover, reducing electrode thickness and increasing laser power are likely to enhance penetration depth and amplify volumetric heating effects. These findings provide a valuable starting point and inspiration for further research into optimizing laser-assisted drying processes.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"387 ","pages":"Article 138251"},"PeriodicalIF":2.7,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454844","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