Journal of Materials Science: Materials in Electronics最新文献

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Investigation of structure, morphology, dielectric, and optoelectronic properties of La-doped BaZrO3: experimental and DFT analysis 掺 La 的 BaZrO3 的结构、形态、介电和光电特性研究:实验和 DFT 分析
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-20 DOI: 10.1007/s10854-024-13878-6
Ahmad Ayyaz, G. Murtaza, Huda Alkhaldi, Haya Alhummiany, Akhlaq Ahmed, Hisham S. M. Abd-Rabboh, Q. Mahmood, M. S. Al-Buriahi, H. Elhosiny Ali
{"title":"Investigation of structure, morphology, dielectric, and optoelectronic properties of La-doped BaZrO3: experimental and DFT analysis","authors":"Ahmad Ayyaz,&nbsp;G. Murtaza,&nbsp;Huda Alkhaldi,&nbsp;Haya Alhummiany,&nbsp;Akhlaq Ahmed,&nbsp;Hisham S. M. Abd-Rabboh,&nbsp;Q. Mahmood,&nbsp;M. S. Al-Buriahi,&nbsp;H. Elhosiny Ali","doi":"10.1007/s10854-024-13878-6","DOIUrl":"10.1007/s10854-024-13878-6","url":null,"abstract":"<div><p>In this work, Ba<sub>1-x</sub>La<sub>x</sub>ZrO<sub>3</sub> (<i>x</i> = 0, 0.04, 0.08, 0.12, 0.16) samples were prepared using a solid-state reaction method. The analysis of XRD patterns ensured the cubic structures with space group Pm3m and lattice parameters by Rietveld refinement. The density functional theory (DFT) has been employed to study the electronic band structure and density of states. The field emission scanning electron microscope (FESEM) is used to investigate the surface morphology of studied samples and calculate the average grain size in the 0.2 to 0.8 µm range. Fourier transform infrared (FTIR) spectroscopy observes the existence of functional bonding in all samples. The dielectric and impedance measurements have been carried out using electrochemical impedance spectroscopy (EIS) in the high-frequency region. The electronic and optical of pure BaZrO<sub>3</sub> and Ba<sub>1-x</sub>La<sub>x</sub>ZrO<sub>3</sub> (<i>x</i> = 0.12) are computed by density functional theory (DFT) calculations. The BaZrO<sub>3</sub> has an indirect band gap of 3.52 eV, whereas Ba<sub>1-x</sub>La<sub>x</sub>ZrO<sub>3</sub> (<i>x</i> = 0.12) reveals a direct band gap of 3.36 eV. The band gap transitions from an indirect to a direct band gap with La-doping. The optical characteristics, such as dielectric constants, absorption coefficient, reflection, refractive index, optical conductivity, and optical loss, are investigated, and Ba<sub>1-x</sub>La<sub>x</sub>ZrO<sub>3</sub> (<i>x</i> = 0.12) responds optically well to the ultraviolet range. This analysis suggests that Ba<sub>1-x</sub>La<sub>x</sub>ZrO<sub>3</sub> is a suitable candidate for UV-based photovoltaics and photodetectors.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Growth and characterization of semi-organic third-order nonlinear optical (NLO) succinic acid magnesium sulphate single crystals 半有机三阶非线性光学 (NLO) 琥珀酸镁硫酸盐单晶体的生长与表征
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-20 DOI: 10.1007/s10854-024-13889-3
S. Swathi, B. Samuel Ebinezer, M. Shalini, M. Meena, R. S. Sundararajan, T. C. Sabari Girisun
{"title":"Growth and characterization of semi-organic third-order nonlinear optical (NLO) succinic acid magnesium sulphate single crystals","authors":"S. Swathi,&nbsp;B. Samuel Ebinezer,&nbsp;M. Shalini,&nbsp;M. Meena,&nbsp;R. S. Sundararajan,&nbsp;T. C. Sabari Girisun","doi":"10.1007/s10854-024-13889-3","DOIUrl":"10.1007/s10854-024-13889-3","url":null,"abstract":"<div><p>An effective growth method utilizing a slow evaporation process at room temperature has been implemented to produce the centrosymmetric semi-organic crystal of succinic acid magnesium sulphate (SAMS). The single crystal X-ray diffraction analysis indicates that the SAMS crystal exhibits a monoclinic crystal structure, with cell dimensions of <i>a</i> = 5.18 Å, <i>b</i> = 8.88 Å, <i>c</i> = 5.60 Å. The powder x-ray diffraction analysis indicates that the grown crystals possesses excellent crystallinity. The findings indicated a negligible level of absorption within the UV–Visible spectrum, with a lower cutoff wavelength identified at 245 nm. Furthermore, the optical band gap energy was determined to be <i>E</i><sub>g</sub> = 5.06 eV and optical transmittance spectrum demonstrated. An examination was conducted to determine the vibrational frequencies of the crystal through FT-IR spectral studies. The dielectric investigations of the crystal sample in its original state reveal a diminished dielectric constant and loss when subjected to higher frequencies. The fluorescence spectral study has been conducted to analyse the luminescence behaviour of SAMS. The analysis conducted via (SEM) provides valuable information regarding the quality of the sample and the distribution of grains on its surface. Additionally, the chemical composition of the SAMS crystal was assessed through energy-dispersive X-ray analysis. The crystal's bulk resistance and dc conductivity were determined using a Nyquist plot. The mechanical stability of the crystal was assessed using Vickers microhardness tests. The laser damage threshold (LDT) for the SAMS crystal was measured with an Nd: YAG laser functioning at a wavelength of 1064 nm. The Z-scan method, which employs an Nd: YAG laser, has been utilized to investigate third order nonlinear (SAMS). This technique demonstrates its potential for future applications in fields such as optoelectronics and optical limiting application.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-024-13889-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced electrochemical and transport properties of proton-conducting electrolytes through Y and Gd co-doping in BaCe0.6Zr0.2Y0.2-xGdxO3-δ 通过在 BaCe0.6Zr0.2Y0.2-xGdxO3-δ 中共同掺杂 Y 和 Gd 增强质子传导电解质的电化学和传输特性
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-20 DOI: 10.1007/s10854-024-13836-2
Lixin Yang, Ying Li, Gaopeng Zhou, Xi Wang
{"title":"Enhanced electrochemical and transport properties of proton-conducting electrolytes through Y and Gd co-doping in BaCe0.6Zr0.2Y0.2-xGdxO3-δ","authors":"Lixin Yang,&nbsp;Ying Li,&nbsp;Gaopeng Zhou,&nbsp;Xi Wang","doi":"10.1007/s10854-024-13836-2","DOIUrl":"10.1007/s10854-024-13836-2","url":null,"abstract":"<div><p>In this study, the impact of co-doping Y and Gd on the structure and electrical properties of BaCe<sub>0.6</sub>Zr<sub>0.2</sub>Y<sub>0.2-<i>x</i></sub>Gd<sub><i>x</i></sub>O<sub>3-δ</sub> (<i>x</i> = 0, 0.05, 0.10, and 0.15; denoted as BCZY, BCZYG5, BCZYG10, and BCZYG15) perovskite proton conductors were systematically studied. The BCZYG<i>x</i> materials were synthesised via a solid-state reaction. The XRD results demonstrate that the Gd elements have been successfully incorporated into the lattice of the material phase, resulting in the formation of a single perovskite phase. The SEM and EDS results demonstrate that the doping of Gd can facilitate grain growth and enhance the material’s density. The electrical properties of BCZYG<i>x</i> materials are investigated by relaxation time distribution (DRT) and equivalent circuit scheme (ECS) based on the defect equilibrium model. The results demonstrate that the BCZYG5 exhibits the highest conductivity and proton transport number at 600 °C, which were 9.47 × 10<sup>–3</sup> S·cm<sup>−1</sup> and 0.88, respectively. The experimental results indicate that the co-doping strategy can effectively enhance the conductivity and proton transport number of the BCZYG5 proton conductor material. This paper presents a novel approach to optimising the performance of perovskite proton conductors, offering valuable insights for the development of high-performance protonic ceramic fuel cells.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and characterization of NiTe-Ni2Te3 processed by mechanosynthesis at ambient conditions 在环境条件下通过机械合成法加工的 NiTe-Ni2Te3 的合成与表征
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-19 DOI: 10.1007/s10854-024-13733-8
José Josué Rodríguez Pizano, M. de la L. Olvera
{"title":"Synthesis and characterization of NiTe-Ni2Te3 processed by mechanosynthesis at ambient conditions","authors":"José Josué Rodríguez Pizano,&nbsp;M. de la L. Olvera","doi":"10.1007/s10854-024-13733-8","DOIUrl":"10.1007/s10854-024-13733-8","url":null,"abstract":"<div><p>In this work, an analysis on the physicochemical properties of materials based on NiTe-Ni<sub>2</sub>Te<sub>3</sub> synthesized through a mechanosynthesis process by using a planetary ball mill, at ambient conditions, was carried out. Pure nickel and tellurium powders with a mass ratio of 1:1 were used as precursors. The milling speed was kept constant at 500 rpm, and the effective milling time was varied, 2, 4, 6, 8 and 10 h. The structural, morphological, optical and electrical properties of NiTe-Ni<sub>2</sub>Te<sub>3</sub> materials were studied. The crystallographic properties by X-ray powder diffraction (DRX) were analyzed, and it was determined that the materials present a mix of two different compounds; a hexagonal phase of NiTe and a monoclinic phase of Ni<sub>2</sub>Te. From scanning electron microscopy (SEM) the presence of agglomerates of particles with irregular morphologies and others in disc form were evidenced. From reflectance measurements the bandgap energies, E<sub>g</sub>, were estimated, and it was found an E<sub>g</sub> increase with milling time. From the infrared spectroscopy analysis (FTIR), the characteristic vibrational frequencies, 425 and 672 cm<sup>−1</sup>, of the NiTe-Ni<sub>2</sub>Te<sub>3</sub> system were observed. The electrical properties were measured by Hall effect, using the Van Der Pauw contacts confiration, confirming the n-type conductivity in all the samples, and obtaining that sample synthesized with 8 h of milling presented the best electrical properties, resistivity of 0.77 Ωcm, electron concentration of 2.0 × 10<sup>17</sup> cm<sup>−3</sup> and mobility 53.08 cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup>. The Seebeck coefficient and power factor were estimated to evaluate the thermoelectric properties of the samples. The sample synthesized with 4 h of milling presented the highest Seebeck coefficient and power factor, − 74.56 µVK<sup>−1</sup> and 4.27 µWcm<sup>−1</sup> K<sup>−2</sup>, respectively. The obtained results showed promising properties of synthesized NiTe-Ni<sub>2</sub>Te<sub>3</sub> powders and its possible application as thermoelectrical materials.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-024-13733-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Retraction Note: Synthesis, characterization and luminescence studies of rare earth activated Sr2SiO4 phosphor: a review 撤稿说明:稀土活化 Sr2SiO4 荧光粉的合成、表征和发光研究:综述
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-19 DOI: 10.1007/s10854-024-13923-4
Vikram Awate, Ratnesh Tiwari, A. K. Shrivastava, Neha Dubey, Vikas Dubey
{"title":"Retraction Note: Synthesis, characterization and luminescence studies of rare earth activated Sr2SiO4 phosphor: a review","authors":"Vikram Awate,&nbsp;Ratnesh Tiwari,&nbsp;A. K. Shrivastava,&nbsp;Neha Dubey,&nbsp;Vikas Dubey","doi":"10.1007/s10854-024-13923-4","DOIUrl":"10.1007/s10854-024-13923-4","url":null,"abstract":"","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crystal structure and electrical properties of LnCoO3 (Ln=La, Pr, Tb) perovskite LnCoO3(Ln=La、Pr、Tb)包晶石的晶体结构和电学特性
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-19 DOI: 10.1007/s10854-024-13874-w
Ke Shu, Chun-Hai Wang, Guang-Tao Chen, Zhi-Lin Ji, Wei-Xin Yan, Fa Luo
{"title":"Crystal structure and electrical properties of LnCoO3 (Ln=La, Pr, Tb) perovskite","authors":"Ke Shu,&nbsp;Chun-Hai Wang,&nbsp;Guang-Tao Chen,&nbsp;Zhi-Lin Ji,&nbsp;Wei-Xin Yan,&nbsp;Fa Luo","doi":"10.1007/s10854-024-13874-w","DOIUrl":"10.1007/s10854-024-13874-w","url":null,"abstract":"<div><p>The rare-earth cobalt-based perovskite oxides LnCoO<sub>3</sub> are promising electronic functional materials. The different synthesis conditions and microstructures led to obviously different results in previous investigations. In this study, LnCoO<sub>3</sub> (Ln=La, Pr, Tb) with different Ln <i>f</i>-electron configurations [La<sup>3+</sup> (4<i>f</i> <sup>0</sup>), Pr<sup>3+</sup> (4<i>f</i> <sup>3</sup>), and Tb<sup>3+</sup> (4<i>f</i> <sup>9</sup>)] were investigated through careful synthesis controlling. The bond valence analysis, Mulliken population charge analysis and XPS analysis confirm that the Ln and Co ions in LnCoO<sub>3</sub> are all in + 3 oxide state (i.e. La<sup>3+</sup>, Pr<sup>3+</sup>, Tb<sup>3+</sup>, and Co<sup>3+</sup>). The different A-site cations have no significant effect on the [CoO<sub>6</sub>] octahedra size in LnCoO<sub>3</sub> and average Co–O bond lengths are all ~ 1.93 Å. The band structure of LnCoO<sub>3</sub> shows similar coupling distribution between Co-3<i>d</i> and O-2<i>p</i> bands, which originates from the similarity of the [CoO<sub>6</sub>] octahedra. This band structure leads to similar OER and ORR catalytic activities of LnCoO<sub>3</sub>. The OER overpotential of LnCoO<sub>3</sub> is 463–506 mV, which is ~ 100 mV lower than that of commercial Pt/C catalysts, and the ORR half-wave potential is 0.63–0.67 V. The conductivity (<i>σ</i>) of LnCoO<sub>3</sub> is 0.11 S cm<sup>−1</sup> for LaCoO<sub>3</sub>, 0.04 S cm<sup>−1</sup> for PrCoO<sub>3</sub> and 3.91 × 10<sup>–4</sup> S cm<sup>−1</sup> for TbCoO<sub>3</sub> at room temperature. This study reveals the [CoO<sub>6</sub>] octahedra in LnCoO<sub>3</sub> perovskite is the key factor to their band structure and electrocatalytic behavior, providing an important knowledge for the research and development of these materials.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comprehensive study on thermal, structural, and luminescent properties of BiYWO6: Eu3+ phosphors synthesized by various methods 各种方法合成的 BiYWO6: Eu3+ 磷光体的热、结构和发光特性的综合研究
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-19 DOI: 10.1007/s10854-024-13852-2
Indrajeet Maurya, M. Jayasimhadri
{"title":"Comprehensive study on thermal, structural, and luminescent properties of BiYWO6: Eu3+ phosphors synthesized by various methods","authors":"Indrajeet Maurya,&nbsp;M. Jayasimhadri","doi":"10.1007/s10854-024-13852-2","DOIUrl":"10.1007/s10854-024-13852-2","url":null,"abstract":"<div><p>Europium-activated bismuth yttrium tungstate (BYW: Eu<sup>3+</sup>) phosphors were synthesized by four various synthesis techniques such as solid-state reaction (SSR), sol–gel combustion (SGC), co-precipitation (CP), and hydrothermal (HT) methods. Relative investigations such as thermal, structural, morphological, and luminescence characterizations have been carried out to optimize the synthesis process of BYW:Eu<sup>3+</sup>phosphor. The TGA–DSC curves signify the endothermic/exothermic peaks and corresponding weight loss during heating. X-ray diffraction analysis and Rietveld refinement have been used to identify the phase and crystal structure of the undoped and doped BiYWO<sub>6</sub> sample. The field emission scanning electron microscope with energy-dispersive X-ray was carried out to examine the morphological and compositional behavior of the synthesized BYW: Eu<sup>3+</sup>phosphor. The luminescent spectral profiles indicate the strong absorption in the blue region (<i>λ</i><sub>ex</sub> = 465 nm) and intense emission in the red region (<i>λ</i><sub>em</sub> = 613 nm) ascribed to the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition. The compared photoluminescence (PL) results signify that the phosphor synthesized by the CP method at calcination temperature 900 °C exhibits the strongest emission than the phosphor synthesized via other methods (SGC, SSR, and HT) and is especially two times higher than the phosphor synthesized by the SSR method. Further, the PL intensity enhanced with increasing activator concentration of Eu<sup>3+</sup> ions up to 20 mol%. The calculated CIE chromaticity coordinates (0.654, 0.345) of 20.0 mol% Eu<sup>3+</sup>-doped BYW sample were situated in the red region, which is comparable with the commercially available red-emitting phosphors Y<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup> (0.645, 0.347) and Y<sub>2</sub>O<sub>2</sub>S:Eu<sup>3+</sup> (0.647, 0.343). The average PL decay time of the synthesized phosphor was in the microseconds range. The obtained results suggest that the BiYWO<sub>6</sub> activated with Eu<sup>3+</sup> ions phosphor synthesized by the CP method has distinctive PL characteristics with good morphology, which can be employed as an intense red-emitting component in photonics devices.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved sodium storage properties NaFePO4/C as cathode material for sodium-ion batteries 改进钠离子电池阴极材料 NaFePO4/C 的储钠性能
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-18 DOI: 10.1007/s10854-024-13817-5
V. Munusami, K. Arutselvan, S. Vadivel, S. Govindasamy
{"title":"Improved sodium storage properties NaFePO4/C as cathode material for sodium-ion batteries","authors":"V. Munusami,&nbsp;K. Arutselvan,&nbsp;S. Vadivel,&nbsp;S. Govindasamy","doi":"10.1007/s10854-024-13817-5","DOIUrl":"10.1007/s10854-024-13817-5","url":null,"abstract":"<div><p>Because of the plentiful supply of sodium, sodium ion batteries (SIBs) as one of the most promising technologies for affordable rechargeable batteries. Here, we outline an easy method for creating a NaFePO<sub>4</sub>@C hybrid composite cathode for SIBs. GCD, CV, and EIS tests have been conducted to study the samples’ electrochemical and kinematic properties. It is confirmed that modest carbon doping can enhance the electrocatalytic activity of NaFePO<sub>4</sub> (NFP). The resulting NFP@C nanocomposite as cathode material for SIBs displays good rate capability and lofty capacity (158.5 mAhg<sup>−1</sup>) retention after 50 cycles at 0.1C. The NaFePO<sub>4</sub> and the carbon covering, which make it easier for the Na + ion and electron to access the material quickly during the process of charging and discharging, respectively, are responsible for the good electrochemical performances. This work highlights the value of investigating novel structures and offers a technique for the creation of NaFePO<sub>4</sub>@C-based cathodes.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dye-sensitized solar cells achieved with multi-layered SnO2/ZnO composite photoanodes through precise control of thickness and composition 通过精确控制厚度和成分,利用多层 SnO2/ZnO 复合光阳极实现染料敏化太阳能电池
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-18 DOI: 10.1007/s10854-024-13837-1
M. I. U. Weerasinghe, K. D. M. S. P. K. Kumarasinghe, Buddhika C. Karunarathne, P. M. L. Kumarage, T. M. W. J. Bandara, Kirthi Tennakone, I. Albinsson, B. E. Mellander, G. R. A. Kumara
{"title":"Dye-sensitized solar cells achieved with multi-layered SnO2/ZnO composite photoanodes through precise control of thickness and composition","authors":"M. I. U. Weerasinghe,&nbsp;K. D. M. S. P. K. Kumarasinghe,&nbsp;Buddhika C. Karunarathne,&nbsp;P. M. L. Kumarage,&nbsp;T. M. W. J. Bandara,&nbsp;Kirthi Tennakone,&nbsp;I. Albinsson,&nbsp;B. E. Mellander,&nbsp;G. R. A. Kumara","doi":"10.1007/s10854-024-13837-1","DOIUrl":"10.1007/s10854-024-13837-1","url":null,"abstract":"<div><p>The spin coating is cost-effective, straightforward, and highly suitable for the large-scale production of solar cells. In this study, we report the fabrication of SnO<sub>2</sub>/ZnO composite films for dye-sensitized solar cells (DSCs) using a simplified and cost-effective spin-coating technique on fluorine-doped tin oxide glass substrates. This study introduces a new way of preparing a multi-layered composite thin film using a suspension containing colloidal SnO<sub>2</sub> nanoparticles and ZnO nanoparticles followed by sonication and aging of TiO<sub>2</sub>-free high-efficiency DSCs. Our approach provides a facile way of obtaining a uniform film of tunable thickness with high reproducibility by adjusting the total number of coating cycles. The spin-coating process achieved a nano-sized SnO<sub>2</sub>-covered ZnO layer, contributing to enhanced conversion efficiency in DSCs. A specific number of seven coating cycles was identified as optimal for achieving the aspirational performance. Under standard AM 1.5 irradiation with an intensity of 100 mW/ cm<sup>2</sup>, the fabricated SnO<sub>2</sub>/ZnO composite films revealed an overall energy conversion efficiency of 6.5% with a thickness of 2.06 µm which is impressive for a TiO<sub>2</sub>-free DSC. This achievement indicates the potential of the developed fabrication process for cost-effective and scalable production of efficient DSCs with SnO<sub>2</sub>/ZnO composite.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10854-024-13837-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High energy storage efficiency in lead-free perovskite (1-x)(0.3Ba0.85Ca0.15Zr0.1Ti0.9O3-0.7SrTiO3)-xBiMg1/2Ti1/2O3 ceramics with superparaelectric design 采用超准电设计的无铅包晶 (1-x)(0.3Ba0.85Ca0.15Zr0.1Ti0.9O3-0.7SrTiO3)-xBiMg1/2Ti1/2O3陶瓷的高储能效率
IF 2.8 4区 工程技术
Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-18 DOI: 10.1007/s10854-024-13767-y
Shimin Wang, Jiayi He, Fengzhen Huang, Jielin Zha, Xueli Hu, Yulong Yang, Jingyuan Ni, Wenjin Yang, Biwei Shen, Xiaomei Lu
{"title":"High energy storage efficiency in lead-free perovskite (1-x)(0.3Ba0.85Ca0.15Zr0.1Ti0.9O3-0.7SrTiO3)-xBiMg1/2Ti1/2O3 ceramics with superparaelectric design","authors":"Shimin Wang,&nbsp;Jiayi He,&nbsp;Fengzhen Huang,&nbsp;Jielin Zha,&nbsp;Xueli Hu,&nbsp;Yulong Yang,&nbsp;Jingyuan Ni,&nbsp;Wenjin Yang,&nbsp;Biwei Shen,&nbsp;Xiaomei Lu","doi":"10.1007/s10854-024-13767-y","DOIUrl":"10.1007/s10854-024-13767-y","url":null,"abstract":"<div><p>Dielectric capacitors, possessing ultrafast charge–discharge speed and high-power density, have captured increasing attention and extensive research due to their potential applications in pulse power techniques. However, the limited energy density and efficiency hinder their applications in capacitive energy storage. Here, superparaelectric state, which exhibits a high polarization and a nearly nonhysteretic response to an external electric field, was designed by constructing (1-x)(0.3Ba<sub>0.85</sub>Ca<sub>0.15</sub>Zr<sub>0.1</sub>Ti<sub>0.9</sub>O<sub>3</sub>-0.7SrTiO<sub>3</sub>)-xBiMg<sub>0.5</sub>Ti<sub>0.5</sub>O<sub>3</sub> ternary system to establish a superior comprehensive energy storage system, considering the recoverable energy storage density (<i>W</i><sub>rec</sub>) and efficiency (<i>η</i>), working temperature range and fatigue resistance. A high efficiency of 94.2%, a large <i>W</i><sub>rec</sub> of 4.43 J/cm<sup>3</sup> , and thus a superior overall energy storage performance <i>U</i><sub>F</sub> of 76.4 were realized in the ceramic with <i>x</i> = 0.3 at 460 kV/cm due to its suitable superparaelectric temperature range (24–126 °C) and the concomitant dynamic disordered polymorphic polar nanoregions. Benefiting from these features, remarkable long-term working and temperature stabilities, high power density of about 143.5 MW/cm<sup>3</sup> and fast discharging speed (<i>t</i><sub>0.9</sub> = 58 ns) were also obtained. This work provided an effective strategy in improving the comprehensive energy storage performance of dielectric capacitors especially for realizing high efficiency.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"35 33","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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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