Bulletin of Materials Science最新文献_第7页

Environment-friendly approach to rGO–TMD composite synthesis for use as a supercapacitor 用作超级电容器的 rGO-TMD 复合材料的环保型合成方法

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-09-05 DOI: 10.1007/s12034-024-03310-4

Ragini Chaturvedi, Amit Garg

{"title":"Environment-friendly approach to rGO–TMD composite synthesis for use as a supercapacitor","authors":"Ragini Chaturvedi, Amit Garg","doi":"10.1007/s12034-024-03310-4","DOIUrl":"10.1007/s12034-024-03310-4","url":null,"abstract":"<div>Owing to their characteristics like fast charge–discharge rate, very long life, simple geometry and eco-friendly nature, supercapacitor is an emerging technology to fulfil the present and future requirements of the energy. The performance of a supercapacitor is derived from the composition and morphology of the electrode. 2D materials possess various excellent structural properties like surface area, flexibility in the atomic scale dimension and mechanical strength with high electrical conductivity. This makes them an entrusted material to be used as an electrode material. The teaming of 2D materials and layered transition metal dichalcogenides have been of great interest for electrode materials. In this study, the reduction of graphene oxide is done by an environment-friendly synthesis method using cow urine, and then, synthesizing the reduced graphene oxide (rGO) and transition metal dichalcogenides (TMD) composite using the refluxing method. The modified pencil graphite electrode (PGE) was functionalized using the above composite and the performance is comparable to that of glassy carbon electrode. Our main motive was to develop a low-cost, sustainable and highly effective MoS2–rGO/PGE, which is completely based on an environment and eco-friendly method using natural precursors. The prepared MoS2–rGO nanocomposite was characterized by XRD, SEM and EDX, which revealed the formation as well as its morphological scenario. MoS2–rGO/PGE is explored as electrode material by electrochemical characterization with the 3-electrode system through cyclic voltammetry and electrochemical impedance spectroscopy, which exhibit maximum specific capacitance with good cycle stability.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208459","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

Enhancing supercapacitor, photovoltaic and magnetic properties of SnO2 nanoparticles doped with Cu and Zn ions 增强掺杂铜和锌离子的二氧化锡纳米粒子的超级电容器、光伏和磁性能

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-09-05 DOI: 10.1007/s12034-024-03293-2

Mohd Arif Dar, Haridharan Neelamegan, V J Priyadharshini, S Rafi Ahamed, P Arularasan, Madhulika Mishra, Aafaq A. Rather

引用次数: 0

Increased lithium-ionic conductivity with Nb- and Ta-doping in garnet-structured solid electrolyte oxides 在石榴石结构的固体电解质氧化物中掺入 Nb 和 Ta 提高锂离子电导率

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-28 DOI: 10.1007/s12034-024-03275-4

S Siddiqui, D Singh, B Singh

{"title":"Increased lithium-ionic conductivity with Nb- and Ta-doping in garnet-structured solid electrolyte oxides","authors":"S Siddiqui, D Singh, B Singh","doi":"10.1007/s12034-024-03275-4","DOIUrl":"10.1007/s12034-024-03275-4","url":null,"abstract":"<div>Garnet-type oxide materials show high Li-ion conductivity and may be used as solid-state electrolytes in lithium-ion batteries to address safety concerns. In this study, Nb-doped Li7Nd2.8Ca0.2Zr1.8Nb0.2O12 (LNdCZNbO) and Ta-doped Li7Nd2.8Ca0.2Zr1.8Ta0.2O12 (LNdCZTaO) garnet-type compositions were prepared to examine the impact of Nb- and Ta-doping on ionic conductivity of Li7Nd3Zr2O12 (LNdZO). XRD patterns showed the crystallization of major phase of these garnet-structured oxides in tetragonal symmetry. Impedance measurements were recorded from room temperature to 450°C using a Novocontrol make impedance analyzer (Alpha-A high-performance frequency analyzer) in the frequency range of 1 Hz–40 MHz. The maximum total conductivity of parent composition LNdZO was 5.12 × 10−5 S cm−1 at 25°C. The compositions of LNdCZNbO and LNdCZTaO showed conductivity 7.05 × 10−4 and 8.23 × 10−4 S cm−1, respectively, at 25°C. On higher temperature of 350°C, these doped compositions, LNdCZNbO and LNdCZTaO, showed enhanced conductivity of 3.30 × 10−3 and 2.63 × 10−3 S cm−1, respectively, as compared to the parent LNdZO composition’s conductivity of 4.42 × 10−4 S cm−1. Analysis of the Cole–Cole plots fitting showed the nature of Li ionic conduction and the existence of bulk and grain boundary impedances in these compositions. The activation energy was found to be higher for the compositions of LNdCZNbO (0.18 ± 0.01 eV) and LNdCZTaO (0.17 ± 0.01 eV) in comparison with the activation energy of undoped composition Li7Nd3Zr2O12 (0.14 ± 0.00 eV) due to the change in garnet lattice by doping of Ca and Nb/Ta.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208461","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

Improved electron transport in planar perovskite solar cells using TiO2, SnO2 and WO3 ultra-thin layers: a comparison on all single layer and bilayer structures 使用 TiO2、SnO2 和 WO3 超薄层改善平面过氧化物太阳能电池中的电子传输：所有单层和双层结构的比较

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-27 DOI: 10.1007/s12034-024-03170-y

Mozhgan Kazemzadeh Otoufi, Ahmad Kermanpur

{"title":"Improved electron transport in planar perovskite solar cells using TiO2, SnO2 and WO3 ultra-thin layers: a comparison on all single layer and bilayer structures","authors":"Mozhgan Kazemzadeh Otoufi, Ahmad Kermanpur","doi":"10.1007/s12034-024-03170-y","DOIUrl":"10.1007/s12034-024-03170-y","url":null,"abstract":"<div>To achieve high performance in perovskite solar cells (PSCs), it is very vital to engineer the recombination and extraction of the hole–electron pairs at the electron transport layer (ETL)/perovskite interface. In this research, the main idea is to improve the photovoltaic performance of the cells by modifying the compact ETL surface (≈50 nm thick) by inserting a <10 nm thick ultra-thin layer (UTL) of metal oxide. For this purpose, all types of single layer and bilayer structured ETLs of TiO2, SnO2 and WO3, i.e., three common metal oxide electron transport materials in PSCs, were fabricated using the reproducible and industry-compatible radio-frequency sputtering method and their function as ETLs was then compared. These ETLs and cells were characterized for structural and electrical properties by FESEM, XRD, Mott–Schottky analysis, UV–Vis spectroscopy and J–V measurements. It was found that a significant increase in cell efficiency is achieved due to more efficient energy band alignment using the bilayer structures of TiO2/WO3-UTL, SnO2/WO3-UTL and TiO2/SnO2-UTL. Conversely, reduced efficiency is observed when using their inverted structures, namely WO3/TiO2-UTL, WO3/SnO2-UTL and SnO2/TiO2-UTL. These results suggest a simple and promising strategy to increase the efficiency of photovoltaic devices.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208465","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

An investigation on the corrosion behaviour of B4C-reinforced AA5083 aluminium alloy in sodium chloride solution using electrochemical impedance spectroscopy 使用电化学阻抗光谱法研究 B4C 增强 AA5083 铝合金在氯化钠溶液中的腐蚀行为

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-27 DOI: 10.1007/s12034-024-03262-9

Kourosh Jafarzadeh, Hamed Ansari Ashlaghi, Ali Alizadeh, Hadiseh Mazhari Abbasi

{"title":"An investigation on the corrosion behaviour of B4C-reinforced AA5083 aluminium alloy in sodium chloride solution using electrochemical impedance spectroscopy","authors":"Kourosh Jafarzadeh, Hamed Ansari Ashlaghi, Ali Alizadeh, Hadiseh Mazhari Abbasi","doi":"10.1007/s12034-024-03262-9","DOIUrl":"10.1007/s12034-024-03262-9","url":null,"abstract":"<div>In this research, the role of B4C-reinforcing particles on the corrosion behaviour of Al5083/B4C nanocomposite has been investigated. Al/B4C nanocomposite powder with weight percentages of 3 and 7 of reinforcing phase was prepared by mechanical milling method. The resulting powder was initially hot-pressed and then hot-extruded. The microstructure of the sample was studied using scanning electron microscopy and their corrosion behaviour was studied using potentiodynamic polarization and scanning electrochemical impedance spectroscopy methods in different immersion time intervals. The results showed a uniform distribution of reinforcing particles and also the scattering of intermetallic particles at the surface of the samples. However, increasing the content of B4C particles in the composite samples enhances the cathodic and anodic reactions by increasing the content of intermetallic particles as cathodic sites on the surface, so that higher corrosion current density is observed in the composite samples with 7 wt% B4C. Finally, it was concluded that increasing the value of B4C decreases the corrosion resistance of the B4C-reinforced composite samples in sodium chloride solution, which makes it unsuitable in marine applications.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208464","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

Effect of free energy on the solid solubility and magnetic behaviour of a mechanically alloyed nanocrystalline Cu–Co–Ti alloy 自由能对机械合金化纳米铜-铜-钛合金固溶性和磁性的影响

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-27 DOI: 10.1007/s12034-024-03312-2

Sumit Chabri, Sayan Samanta, Goutam Roy, Akhtarujjaman Sarkar, Supriya Bera

引用次数: 0

An investigation of structural, magnetic and electrical properties of Ca dominant A-site tungsten bronze ferroelectric ceramic Ca 主导 A 位钨青铜铁电陶瓷的结构、磁性和电性研究

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-27 DOI: 10.1007/s12034-024-03280-7

Shristi Chaudhary, Sheela Devi, Shilpi Jindal

引用次数: 0

Fabrication of Ag injection in Bi2S3 (AgBiS2) thin films for photoelectrochemical cell applications 制作用于光电化学电池应用的 Bi2S3（AgBiS2）薄膜中的注入银

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-23 DOI: 10.1007/s12034-024-03290-5

T Daniel, V Balasubramanian, Antony Lilly Grace, K Mohanraj

{"title":"Fabrication of Ag injection in Bi2S3 (AgBiS2) thin films for photoelectrochemical cell applications","authors":"T Daniel, V Balasubramanian, Antony Lilly Grace, K Mohanraj","doi":"10.1007/s12034-024-03290-5","DOIUrl":"10.1007/s12034-024-03290-5","url":null,"abstract":"<div>The present investigation deals with the detailed analysis of opto-structural, morphological, electrical properties and photoelectrochemical cell performances of thermally evaporated AgxBi2−xS3−y thin film prepared for various x and y values (x = y = 0, 0.25, 0.50, 0.75 and 1). The cubic-structured AgBiS2 along with orthorhombic-structured Bi2S3 as confirmed from X-ray diffraction (XRD) analysis. The AgxBi2−xS3−y (x = y = 0–1) films showed higher optical absorption coefficient (105 cm−1) in the visible region and band gap values were found to be decreased from 2.08 to 1.35 eV. Scanning electron microscope (SEM) images have visualized the uniform distribution of spherical particles. Carrier concentration of the films are better than x = y = 0 as observed from Mott–Schottky plots. The FTO/AgxBi2−xS3−y (x = y = 1) photoelectrochemical cell yields the photoconversion efficiency (PCE) of 7.03%.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208467","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

Mechanism of shear-thickening fluid and factors influencing its rheological properties: a review 剪切增稠流体的机理及其流变特性的影响因素：综述

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-23 DOI: 10.1007/s12034-024-03313-1

Aoping You, Yunfeng Pan, Minghai Wei

引用次数: 0

Tribological behaviour of high-carbon carbide-free nanostructured bainitic steel 高碳无碳化物纳米结构贝氏体钢的摩擦学特性

IF 1.9 4区材料科学

Bulletin of Materials Science Pub Date : 2024-08-22 DOI: 10.1007/s12034-024-03282-5

Sandeep Kumar Gupta, R Manna, Kausik Chattopadhyay

{"title":"Tribological behaviour of high-carbon carbide-free nanostructured bainitic steel","authors":"Sandeep Kumar Gupta, R Manna, Kausik Chattopadhyay","doi":"10.1007/s12034-024-03282-5","DOIUrl":"10.1007/s12034-024-03282-5","url":null,"abstract":"<div>This research focuses on the development of carbide-free nanostructured bainitic steel through the process of austempering at 250°C. The selected steels are also patented at 550°C, to get fine pearlitic structure. In austempered steels, microscopic analyses encompassing optical, scanning, transmission electron microscopy and X-ray diffraction revealed the presence of nanoscale bainite, filmy and blocky austenite. In contrast, lamellar pearlite was observed in the patented steels. With increase in the austempering duration, the extent of bainite improved, while the volume percentage of blocky retained austenite (RA) decreased. The tribological performance of high-carbon bainitic steels is compared with patented one of same composition against a tungsten-carbide counter disc. The specific wear rate as well as coefficient of friction decreases with rise in load from 10 to 50 N. The hardening volume of B15VA-1 sample is greater than that of B15VA-2 and P15VA, and it is mainly due to the transformation of blocky RA to strain-induced martensite. The bainitic pins with higher hardness exhibited superior tribological response than the pearlitic ones. SEM analysis of worn surfaces confirmed that at lower load (10 N), abrasive wear occurs, but at higher load (50 N), wear mechanism changes to adhesive along with abrasive in bainitic steel and oxidative wear along with adhesive and abrasive wear in pearlitic steel.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208470","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