Pub Date : 2025-04-16DOI: 10.1016/j.solidstatesciences.2025.107934
Umesh V. Shembade , Babasaheb T. Shinde , Mayuri G. Magadum , Sandeep B. Wategaonkar , Hemant V. Chavan , Mohammad Rafe Hatshan , Kulurumotlakatla Dasha Kumar , Annasaheb V. Moholkar
Herein, we have studied fabricating high-performance based supercapacitors (SCs) using ferrite (Fe2O3) heterostructures which are anchored on two-dimensional graphitic nitrite (g-C3N4) via simple and low-cost chemical method for energy storage application. In this work, the Fe2O3, g-C3N4, and g-C3N4/Fe2O3 composites were characterized using various physico-chemical techniques to analyze their crystal structures, stretching/bending vibrations, surface morphology, specific surface area, and the presence of the different electronic states, respectively. As a result, the prepared g-C3N4/Fe2O3 composite exhibited a high specific capacitance and capacity of 1143 F/g and 254 mAh/g at a current density of 5 mA/cm2 over other electrodes. However, the fabricated device reveals the maximum energy density of 33 Wh/kg and the power density of 3200 W/kg with superior electrochemical stability of 89 % over 5000 cycles. Based on the above results, the prepared g-C3N4/Fe2O3 composites showed better flexibility, high supercapacitive performance, and a long lifetime stability. Therefore, this research opens up an exciting possibilities for developing advanced supercapacitor activities.
{"title":"Development of Fe2O3 heterostructures anchored on 2D g-C3N4 composite electrode materials for supercapacitor activities","authors":"Umesh V. Shembade , Babasaheb T. Shinde , Mayuri G. Magadum , Sandeep B. Wategaonkar , Hemant V. Chavan , Mohammad Rafe Hatshan , Kulurumotlakatla Dasha Kumar , Annasaheb V. Moholkar","doi":"10.1016/j.solidstatesciences.2025.107934","DOIUrl":"10.1016/j.solidstatesciences.2025.107934","url":null,"abstract":"<div><div>Herein, we have studied fabricating high-performance based supercapacitors (SCs) using ferrite (Fe<sub>2</sub>O<sub>3</sub>) heterostructures which are anchored on two-dimensional graphitic nitrite (g-C<sub>3</sub>N<sub>4</sub>) via simple and low-cost chemical method for energy storage application. In this work, the Fe<sub>2</sub>O<sub>3</sub>, g-C<sub>3</sub>N<sub>4</sub>, and g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> composites were characterized using various physico-chemical techniques to analyze their crystal structures, stretching/bending vibrations, surface morphology, specific surface area, and the presence of the different electronic states, respectively. As a result, the prepared g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> composite exhibited a high specific capacitance and capacity of 1143 F/g and 254 mAh/g at a current density of 5 mA/cm<sup>2</sup> over other electrodes. However, the fabricated device reveals the maximum energy density of 33 Wh/kg and the power density of 3200 W/kg with superior electrochemical stability of 89 % over 5000 cycles. Based on the above results, the prepared g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>O<sub>3</sub> composites showed better flexibility, high supercapacitive performance, and a long lifetime stability. Therefore, this research opens up an exciting possibilities for developing advanced supercapacitor activities.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107934"},"PeriodicalIF":3.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-16DOI: 10.1016/j.solidstatesciences.2025.107936
Vincent Pelletier , Hugo Bouteiller , Bruno Fontaine , David Berthebaud , Jean-Claude Crivello , Franck Gascoin , Takao Mori , Jean-François Halet , Régis Gautier
This study investigates the electronic structure and bonding properties of rare-earth antimonide compounds, specifically Yb4Sb3 and La4Sb3, utilizing density functional theory calculations. The analysis reveals that Yb4Sb3 exhibits a predominantly ionic character whereas La4Sb3 displays a greater degree of covalent bonding. Moreover, the presence of divalent ytterbium leads to p-type conduction at high temperatures in Yb4Sb3. Conversely, La4Sb3 displays n-type conduction because of a larger electronic transfer from the rare-earth metal towards antimony. These findings provide valuable insights into the structural and electronic properties that govern the performance of R4Sb3 compounds, contributing to the development of advanced materials for thermoelectric energy conversion.
{"title":"A theoretical study of the bonding properties of R4Sb3 compounds","authors":"Vincent Pelletier , Hugo Bouteiller , Bruno Fontaine , David Berthebaud , Jean-Claude Crivello , Franck Gascoin , Takao Mori , Jean-François Halet , Régis Gautier","doi":"10.1016/j.solidstatesciences.2025.107936","DOIUrl":"10.1016/j.solidstatesciences.2025.107936","url":null,"abstract":"<div><div>This study investigates the electronic structure and bonding properties of rare-earth antimonide compounds, specifically Yb<sub>4</sub>Sb<sub>3</sub> and La<sub>4</sub>Sb<sub>3</sub>, utilizing density functional theory calculations. The analysis reveals that Yb<sub>4</sub>Sb<sub>3</sub> exhibits a predominantly ionic character whereas La<sub>4</sub>Sb<sub>3</sub> displays a greater degree of covalent bonding. Moreover, the presence of divalent ytterbium leads to <em>p</em>-type conduction at high temperatures in Yb<sub>4</sub>Sb<sub>3</sub>. Conversely, La<sub>4</sub>Sb<sub>3</sub> displays <em>n</em>-type conduction because of a larger electronic transfer from the rare-earth metal towards antimony. These findings provide valuable insights into the structural and electronic properties that govern the performance of <em>R</em><sub>4</sub>Sb<sub>3</sub> compounds, contributing to the development of advanced materials for thermoelectric energy conversion.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107936"},"PeriodicalIF":3.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-15DOI: 10.1016/j.solidstatesciences.2025.107935
Yudan Zhang, Ziqi Cai, Jin Huang, Tao Mu, Xiangmou Ding, Yang Zhao, Yun Zeng, Qin Zuo, Wenhao Zeng, Li Liu, Jiangtao Zhao, Minglei Yan
The effective utilization of agricultural waste rice husks has attracted wide attention. Herein, hierarchical porous carbon (MgPRHC) and cobalt silicate nanosheets (CSONS) are prepared using the one-to-two strategy from rice husks, with the organic biostructure and amorphous SiO2 as precursors, respectively. Notably, the site-occupancy effect of MgO, produced from high-temperature pyrolysis of basic magnesium carbonate, effectively regulates the porous structure of MgPRHC. The specific capacitance of the MgPRHC electrode reaches 209.6 F g-1 at a current density of 0.5 A g-1 and maintains 95.6% after 10,000 charging/discharging cycles. Furthermore, the cobalt silicate material exhibits a two-dimensional nanosheet structure and excellent charge storage performance, which is synthesized from a 1.5 molar ratio of Co2+ to amorphous SiO2 by a one-step hydrothermal reaction. Especially, the CSONS electrode exhibits the battery-type charge storage behavior, with a specific capacitance of 581.9 F g-1 at 0.5 A g-1. When paired with MgPRHC as the cathode, the CSONS//MgPRHC hybrid supercapacitor achieves a maximum energy density and power density of 34.8 Wh kg-1 and 17.4 kW kg-1, respectively. The capacitance retention retains at 96.6% after 10,000 continuous cycles of charging and discharging with minimal degradation of Coulombic efficiency. This work provides a technical route for the high-value utilization of rice husks and theoretical basis for biomass-based supercapacitors.
{"title":"Hierarchical Porous Carbon and Cobalt Silicate Nanosheets Derived from Rice Husks for High-Performance Hybrid Supercapacitors: A Strategy for High-Value Utilization","authors":"Yudan Zhang, Ziqi Cai, Jin Huang, Tao Mu, Xiangmou Ding, Yang Zhao, Yun Zeng, Qin Zuo, Wenhao Zeng, Li Liu, Jiangtao Zhao, Minglei Yan","doi":"10.1016/j.solidstatesciences.2025.107935","DOIUrl":"10.1016/j.solidstatesciences.2025.107935","url":null,"abstract":"<div><div>The effective utilization of agricultural waste rice husks has attracted wide attention. Herein, hierarchical porous carbon (MgPRHC) and cobalt silicate nanosheets (CSONS) are prepared using the one-to-two strategy from rice husks, with the organic biostructure and amorphous SiO<sub>2</sub> as precursors, respectively. Notably, the site-occupancy effect of MgO, produced from high-temperature pyrolysis of basic magnesium carbonate, effectively regulates the porous structure of MgPRHC. The specific capacitance of the MgPRHC electrode reaches 209.6 F g<sup>-1</sup> at a current density of 0.5 A g<sup>-1</sup> and maintains 95.6% after 10,000 charging/discharging cycles. Furthermore, the cobalt silicate material exhibits a two-dimensional nanosheet structure and excellent charge storage performance, which is synthesized from a 1.5 molar ratio of Co<sup>2+</sup> to amorphous SiO<sub>2</sub> by a one-step hydrothermal reaction. Especially, the CSONS electrode exhibits the battery-type charge storage behavior, with a specific capacitance of 581.9 F g<sup>-1</sup> at 0.5 A g<sup>-1</sup>. When paired with MgPRHC as the cathode, the CSONS//MgPRHC hybrid supercapacitor achieves a maximum energy density and power density of 34.8 Wh kg<sup>-1</sup> and 17.4 kW kg<sup>-1</sup>, respectively. The capacitance retention retains at 96.6% after 10,000 continuous cycles of charging and discharging with minimal degradation of Coulombic efficiency. This work provides a technical route for the high-value utilization of rice husks and theoretical basis for biomass-based supercapacitors.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107935"},"PeriodicalIF":3.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-10DOI: 10.1016/j.solidstatesciences.2025.107924
Zhenglin Wang , Zhenya Ge , Lingyun Xu , Zhihao Zhao , Xiaohan Sun , Qi Song , Hongyang Liu , Weijie Wang , Zhe Chen , Gongmo Xiang , Nansong Zhu , Xiangyu Jiang
Hydrogel is a soft biomaterial with high water content that has attracted increasing attention due to its many advantages, such as excellent biocompatibility and shape controllability. However, conventional hydrogel materials have the defects of complex preparation process, low mechanical properties and poor stability, and it is still a great challenge to prepare hydrogels with excellent performance by a simple method. In this study, a method of solvent replacement by immersion was introduced to prepare polyvinyl alcohol/nickel ion (PVA/Ni2+) hydrogels with excellent performance. The hydrogel exhibits excellent tensile properties (elongation at break of 580 %), very high mechanical strength (1.1 MPa), excellent mechanical stability and fatigue resistance. Strikingly, this hydrogel also has good electrical conductivity, and strain sensors based on the hydrogel show an impressive upper detection (more than 300 %), with sensitivity to detect strain as low as 1 %, short response times, and the ability to accurately capture human movement behavior. This work achieves the combination of good mechanical properties and excellent sensing performance, which provides a good idea for the further development of flexible wearable sensing devices.
{"title":"A conductive hybrid hydrogel with high toughness and fatigue resistance for wearable sensor","authors":"Zhenglin Wang , Zhenya Ge , Lingyun Xu , Zhihao Zhao , Xiaohan Sun , Qi Song , Hongyang Liu , Weijie Wang , Zhe Chen , Gongmo Xiang , Nansong Zhu , Xiangyu Jiang","doi":"10.1016/j.solidstatesciences.2025.107924","DOIUrl":"10.1016/j.solidstatesciences.2025.107924","url":null,"abstract":"<div><div>Hydrogel is a soft biomaterial with high water content that has attracted increasing attention due to its many advantages, such as excellent biocompatibility and shape controllability. However, conventional hydrogel materials have the defects of complex preparation process, low mechanical properties and poor stability, and it is still a great challenge to prepare hydrogels with excellent performance by a simple method. In this study, a method of solvent replacement by immersion was introduced to prepare polyvinyl alcohol/nickel ion (PVA/Ni<sup>2+</sup>) hydrogels with excellent performance. The hydrogel exhibits excellent tensile properties (elongation at break of 580 %), very high mechanical strength (1.1 MPa), excellent mechanical stability and fatigue resistance. Strikingly, this hydrogel also has good electrical conductivity, and strain sensors based on the hydrogel show an impressive upper detection (more than 300 %), with sensitivity to detect strain as low as 1 %, short response times, and the ability to accurately capture human movement behavior. This work achieves the combination of good mechanical properties and excellent sensing performance, which provides a good idea for the further development of flexible wearable sensing devices.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107924"},"PeriodicalIF":3.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Herein we present a detailed study of silver-based argyrodite Ag8SiS6 in the form of micro- and nanopowders and corresponding ceramics. The microcrystalline fraction has a particle size of 10–20 μm. The average particle size of nanopowders, as determined by SEM, are ∼140 nm (30 min of grinding) and ∼115 nm (60 min of grinding). XRD analysis confirms the formation of orthorhombic low temperature modification of Ag8SiS6 and the absence of degradation during the ball milling process. The nature of the optical transition and the change in the Eg with dispersion were determined by combining DFT calculations and diffuse reflectance spectroscopy. The microstructural analysis of ceramics indicates a presence of quite homogeneous ceramics (with an average crystallite size of ∼0.41 μm, ∼0.37 μm and ∼0.34 μm) and uniformly distributed microvoids. The compositional homogeneity of the ceramics was established by EDS. The electrical conductivity and activation energy of the studied ceramics were characterized by the impedance spectroscopy. The Ag8SiS6 ceramics are characterized by increase of ionic conductivity (up to 1.1 × 10−4 S/cm) and a decrease in its activation energy (to 0.234 eV) with decreasing of average crystallite sizes in ceramics. The influence of the recrystallization process and grain size on the electrical parameters of Ag8SiS6 ceramics is discussed.
{"title":"Experimental and DFT characterization of argyrodite type Ag8SiS6 multidispersed powders and ceramics","authors":"Artem Pogodin , Mykhailo Filep , Tetyana Malakhovska , Yaroslav Studenyak , Olha Haleha , Serhii Vorobiov , Vladimir Komanicky , Vasyl Vakulchak , Vitaliy Bilanych , Oleksandr Kokhan , Ruslan Mariychuk","doi":"10.1016/j.solidstatesciences.2025.107925","DOIUrl":"10.1016/j.solidstatesciences.2025.107925","url":null,"abstract":"<div><div>Herein we present a detailed study of silver-based argyrodite Ag<sub>8</sub>SiS<sub>6</sub> in the form of micro- and nanopowders and corresponding ceramics. The microcrystalline fraction has a particle size of 10–20 μm. The average particle size of nanopowders, as determined by SEM, are ∼140 nm (30 min of grinding) and ∼115 nm (60 min of grinding). XRD analysis confirms the formation of orthorhombic low temperature modification of Ag<sub>8</sub>SiS<sub>6</sub> and the absence of degradation during the ball milling process. The nature of the optical transition and the change in the <em>E</em><sub><em>g</em></sub> with dispersion were determined by combining DFT calculations and diffuse reflectance spectroscopy. The microstructural analysis of ceramics indicates a presence of quite homogeneous ceramics (with an average crystallite size of ∼0.41 μm, ∼0.37 μm and ∼0.34 μm) and uniformly distributed microvoids. The compositional homogeneity of the ceramics was established by EDS. The electrical conductivity and activation energy of the studied ceramics were characterized by the impedance spectroscopy. The Ag<sub>8</sub>SiS<sub>6</sub> ceramics are characterized by increase of ionic conductivity (up to 1.1 × 10<sup>−4</sup> S/cm) and a decrease in its activation energy (to 0.234 eV) with decreasing of average crystallite sizes in ceramics. The influence of the recrystallization process and grain size on the electrical parameters of Ag<sub>8</sub>SiS<sub>6</sub> ceramics is discussed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107925"},"PeriodicalIF":3.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-09DOI: 10.1016/j.solidstatesciences.2025.107921
Siew Hong Yap , Mohd Mustafa Awang Kechik , Arebat Ryad Alhadei Mohamed , Hussien Baqiah , Soo Kien Chen , Kean Pah Lim , Thareiz Hakim Zailani , Muhammad Kashfi Shabdin , Khairul Khaizi Mohd Shariff , Yazid Yaakob , Mohd Hafiz Mohd Zaid , Mohd Khalis Abdul Karim , Nurul Farizah Hisamuddin , Syahrul Humaidi , Kar Ban Tan , Abdul Halim Shaari , Muralidhar Miryala
This qualitative comparative study discusses the fabrication of bulk YBa2Cu3O7-δ (Y-123) using various modified synthesis methods, including thermal treatment, solid-state, and thermal decomposition methods in ambient conditions. The comparison analysis yielded the following findings for all synthesis methods: i) good orthorhombicity value of crystal structure (∼0.008) (ii) oxygen content close to theoretical value (∼6.8) (iii) presence of non-superconducting phases such as Y2BaCuO5 (Y-211), BaCuO2 and CuO (iv) slightly varying of Tc-onset value, ∼92 K and (v) Thermal treatment produced a sharp transition width of temperatures, ΔTc (3.2 K), while the decomposition method resulted in sharp transition widths of mean field temperatures, such as ΔTconset−MF (1.5 K), with the highest composition of the Y-123 phase (98.3 %). Additionally, the surface morphology for all synthesis methods showed different trends in compactness. The ratio of the elements contained Y:Ba:Cu in all specimens was close to the ratio of 1:2:3. The significance of promptly grinding and subjecting to a brief heat treatment process for producing high-quality Y-123 materials is emphasized in this relative analysis. The thermal decomposition method targets a novel and advanced modified dry synthesis method to prepare superior high-temperature superconductors, especially Y-123, with cost-effectiveness and time-saving benefits, while also preserving environmentally friendly practices.
{"title":"Comparing study of electrical transport properties of bulk Y-123 synthesized by modified wet and dry synthesis methods","authors":"Siew Hong Yap , Mohd Mustafa Awang Kechik , Arebat Ryad Alhadei Mohamed , Hussien Baqiah , Soo Kien Chen , Kean Pah Lim , Thareiz Hakim Zailani , Muhammad Kashfi Shabdin , Khairul Khaizi Mohd Shariff , Yazid Yaakob , Mohd Hafiz Mohd Zaid , Mohd Khalis Abdul Karim , Nurul Farizah Hisamuddin , Syahrul Humaidi , Kar Ban Tan , Abdul Halim Shaari , Muralidhar Miryala","doi":"10.1016/j.solidstatesciences.2025.107921","DOIUrl":"10.1016/j.solidstatesciences.2025.107921","url":null,"abstract":"<div><div>This qualitative comparative study discusses the fabrication of bulk YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> (Y-123) using various modified synthesis methods, including thermal treatment, solid-state, and thermal decomposition methods in ambient conditions. The comparison analysis yielded the following findings for all synthesis methods: i) good orthorhombicity value of crystal structure (∼0.008) (ii) oxygen content close to theoretical value (∼6.8) (iii) presence of non-superconducting phases such as Y<sub>2</sub>BaCuO<sub>5</sub> (Y-211), BaCuO<sub>2</sub> and CuO (iv) slightly varying of <em>T</em><sub>c-onset</sub> value, ∼92 K and (v) Thermal treatment produced a sharp transition width of temperatures, Δ<em>T</em><sub>c</sub> (3.2 K), while the decomposition method resulted in sharp transition widths of mean field temperatures, such as Δ<em>T</em><sub>c</sub><sup>onset−MF</sup> (1.5 K), with the highest composition of the Y-123 phase (98.3 %). Additionally, the surface morphology for all synthesis methods showed different trends in compactness. The ratio of the elements contained Y:Ba:Cu in all specimens was close to the ratio of 1:2:3. The significance of promptly grinding and subjecting to a brief heat treatment process for producing high-quality Y-123 materials is emphasized in this relative analysis. The thermal decomposition method targets a novel and advanced modified dry synthesis method to prepare superior high-temperature superconductors, especially Y-123, with cost-effectiveness and time-saving benefits, while also preserving environmentally friendly practices.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107921"},"PeriodicalIF":3.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-05DOI: 10.1016/j.solidstatesciences.2025.107922
A. Balińska , A. Gil , V. Pavlyuk
An isothermal cross-section of the Zr-Cu-Bi phase diagram at 400 °C was constructed by phase identification and analysis of 43 annealed ternary alloys. Scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and differential scanning calorimetry (DSC) studies were performed. Based on the above-mentioned studies, the area of existence of six phases was established: τ1 - Zr5CuBi3, τ2 - Zr5CuBi2, τ3 - ZrCuBi, τ4 - Zr2CuBi, τ5 - Zr2Cu3Bi, τ6 - ZrCu2Bi, and the phase equilibria between them were determined. The extent of solid solutions based on binary compounds was determined. The electronic structures of the compounds were calculated using the tight-binding linear muffin-tin orbital (TB-LMTO-ASA) method using experimental crystallographic data reported here.
{"title":"Synthesis and characterization of new alloys of ternary Zr-Cu-Bi system","authors":"A. Balińska , A. Gil , V. Pavlyuk","doi":"10.1016/j.solidstatesciences.2025.107922","DOIUrl":"10.1016/j.solidstatesciences.2025.107922","url":null,"abstract":"<div><div>An isothermal cross-section of the Zr-Cu-Bi phase diagram at 400 °C was constructed by phase identification and analysis of 43 annealed ternary alloys. Scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and differential scanning calorimetry (DSC) studies were performed. Based on the above-mentioned studies, the area of existence of six phases was established: τ<sub>1</sub> - Zr<sub>5</sub>CuBi<sub>3</sub>, τ<sub>2</sub> - Zr<sub>5</sub>CuBi<sub>2</sub>, τ<sub>3</sub> - ZrCuBi, τ<sub>4</sub> - Zr<sub>2</sub>CuBi, τ<sub>5</sub> - Zr<sub>2</sub>Cu<sub>3</sub>Bi, τ<sub>6</sub> - ZrCu<sub>2</sub>Bi, and the phase equilibria between them were determined. The extent of solid solutions based on binary compounds was determined. The electronic structures of the compounds were calculated using the tight-binding linear muffin-tin orbital (TB-LMTO-ASA) method using experimental crystallographic data reported here.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107922"},"PeriodicalIF":3.4,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Graphite has been the primary anode material in commercial lithium-ion batteries (LIBs) due to its lithium-like charge/discharge profiles and stable performance at room temperature. However, its effectiveness in low-temperature conditions remains a significant limitation for LIB applications. Hard carbon, an alternative anode material, offers potential advantages in low-temperature environments due to its unique porous structure and lithium storage mechanism. In this study, Zn-modified graphite and hard carbon electrodes were developed by partially substituting the conductive agent acetylene black with 1 wt% Zn. The impact of this Zn addition on the low-temperature performance of the anodes and solid electrolyte interphase (SEI) formation was systematically investigated, comparing Zn-modified electrodes to pristine Zn-free ones. The results indicate that Zn incorporation enhances electrochemical performance by improving electrical conductivity and fostering the development of a thin, uniform LiF-rich SEI layer, which reduces charge-transfer resistance and accelerates electrode activation at low temperatures.
{"title":"Low-temperature performance of Zn-modified graphite and hard carbon as anodes for lithium-ion batteries","authors":"Ayaulym Belgibayeva , Uldana Kydyrbayeva , Makpal Rakhatkyzy , Gulnur Kalimuldina , Arailym Nurpeissova , Zhumabay Bakenov","doi":"10.1016/j.solidstatesciences.2025.107923","DOIUrl":"10.1016/j.solidstatesciences.2025.107923","url":null,"abstract":"<div><div>Graphite has been the primary anode material in commercial lithium-ion batteries (LIBs) due to its lithium-like charge/discharge profiles and stable performance at room temperature. However, its effectiveness in low-temperature conditions remains a significant limitation for LIB applications. Hard carbon, an alternative anode material, offers potential advantages in low-temperature environments due to its unique porous structure and lithium storage mechanism. In this study, Zn-modified graphite and hard carbon electrodes were developed by partially substituting the conductive agent acetylene black with 1 wt% Zn. The impact of this Zn addition on the low-temperature performance of the anodes and solid electrolyte interphase (SEI) formation was systematically investigated, comparing Zn-modified electrodes to pristine Zn-free ones. The results indicate that Zn incorporation enhances electrochemical performance by improving electrical conductivity and fostering the development of a thin, uniform LiF-rich SEI layer, which reduces charge-transfer resistance and accelerates electrode activation at low temperatures.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"164 ","pages":"Article 107923"},"PeriodicalIF":3.4,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-01DOI: 10.1016/j.solidstatesciences.2025.107920
Yuning Cui , Zuxin Xu , Hailong Qiu , Di Jin
Sn anodes, noted for their abundance and high theoretical capacity, have garnered significant attention for lithium-ion batteries. Nonetheless, their significant volume expansion poses challenges, leading to rapid capacity fade and electrode degradation. To address this, a straightforward high-temperature calcination method is employed to encapsulate nanoscale Sn particles within a porous, honeycomb-structured three-dimensional carbon framework. This approach effectively mitigates volume expansion, improves cycling performance, prevents Sn aggregation, and maintains structural integrity. Notably, the Sn/C/3DC composite exhibits remarkable electrochemical properties, maintaining high charge-discharge capacities (1044.0 and 1047.9 mAh g−1) over 1000 cycles at 0.5 A g−1. Even after 4000 cycles at a current density of 5 A g−1, it retains a discharge capacity of 328.5 mAh g−1. This study paves the way for the advancement of sophisticated metal anode materials for lithium-ion batteries.
{"title":"Enhanced cycling stability of lithium-ion batteries with Sn-MOF derived Sn anodes encapsulated within a three-dimensional carbon framework","authors":"Yuning Cui , Zuxin Xu , Hailong Qiu , Di Jin","doi":"10.1016/j.solidstatesciences.2025.107920","DOIUrl":"10.1016/j.solidstatesciences.2025.107920","url":null,"abstract":"<div><div>Sn anodes, noted for their abundance and high theoretical capacity, have garnered significant attention for lithium-ion batteries. Nonetheless, their significant volume expansion poses challenges, leading to rapid capacity fade and electrode degradation. To address this, a straightforward high-temperature calcination method is employed to encapsulate nanoscale Sn particles within a porous, honeycomb-structured three-dimensional carbon framework. This approach effectively mitigates volume expansion, improves cycling performance, prevents Sn aggregation, and maintains structural integrity. Notably, the Sn/C/3DC composite exhibits remarkable electrochemical properties, maintaining high charge-discharge capacities (1044.0 and 1047.9 mAh g<sup>−1</sup>) over 1000 cycles at 0.5 A g<sup>−1</sup>. Even after 4000 cycles at a current density of 5 A g<sup>−1</sup>, it retains a discharge capacity of 328.5 mAh g<sup>−1</sup>. This study paves the way for the advancement of sophisticated metal anode materials for lithium-ion batteries.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107920"},"PeriodicalIF":3.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-29DOI: 10.1016/j.solidstatesciences.2025.107918
Asnit Gangwar , Santhosh Kumar Alla , Ankur Sharma , Madhuri Verma , Subham Kumar Shaw , Tapas Das
We report a modified two stage method to develop CeF3 embedded mesoporous ZnO nanostructures for the X-ray arbitrated photodynamic therapy (X-ray PDT) to enhance therapeutic efficacy. X-ray and electron diffraction patterns confirmed the phases of CeF3-ZnO nanocomposite. Transmission electron microscopy (TEM) revealed the morphologies and sizes for both the phases i.e. CeF3 (5–10 nm) and ZnO (150–250 nm) in the nanocomposite. Photoluminescence spectroscopy was employed to probe their energy emission and absorption characteristics of the CeF3-ZnO mesoporous nanocomposite. Moreover, a strong emission characteristic of Zn2+ ions via energy transfer from Ce3+ ions is proposed by energy transfer mechanism. The colloidal stability, hydrodynamic size, and surface charge distribution of the nanocomposite were analyzed using dynamic light scattering (DLS) for size measurement and a Zetasizer for surface charge evaluation. X-ray photoelectron spectroscopy (XPS) demonstrated the various oxidation states of each element (i.e. Ce, F, Zn and O) present in the nanocomposite sample. The BET-specific surface area was determined to be significantly high, approximately 68 m2/g, with a narrow pore size distribution and an average pore size of around 36.7 nm. The biocompatibility studies using the MTT assay on human lung adenocarcinoma alveolar basal epithelial cells (A549) demonstrated the more than 80 % cell viability at a concentration 50 μg/ml. These results highlight the potential of mesoporous ZnO embedded CeF3 nanoparticles as an effective platform for enhanced X-ray PDT.
{"title":"Mesoporous ZnO integrated CeF3 nanoparticles for X-ray PDT","authors":"Asnit Gangwar , Santhosh Kumar Alla , Ankur Sharma , Madhuri Verma , Subham Kumar Shaw , Tapas Das","doi":"10.1016/j.solidstatesciences.2025.107918","DOIUrl":"10.1016/j.solidstatesciences.2025.107918","url":null,"abstract":"<div><div>We report a modified two stage method to develop CeF<sub>3</sub> embedded mesoporous ZnO nanostructures for the X-ray arbitrated photodynamic therapy (X-ray PDT) to enhance therapeutic efficacy. X-ray and electron diffraction patterns confirmed the phases of CeF<sub>3</sub>-ZnO nanocomposite. Transmission electron microscopy (TEM) revealed the morphologies and sizes for both the phases <em>i.e.</em> CeF<sub>3</sub> (5–10 nm) and ZnO (150–250 nm) in the nanocomposite. Photoluminescence spectroscopy was employed to probe their energy emission and absorption characteristics of the CeF<sub>3</sub>-ZnO mesoporous nanocomposite. Moreover, a strong emission characteristic of Zn<sup>2+</sup> ions via energy transfer from Ce<sup>3+</sup> ions is proposed by energy transfer mechanism. The colloidal stability, hydrodynamic size, and surface charge distribution of the nanocomposite were analyzed using dynamic light scattering (DLS) for size measurement and a Zetasizer for surface charge evaluation. X-ray photoelectron spectroscopy (XPS) demonstrated the various oxidation states of each element (<em>i.e.</em> Ce, F, Zn and O) present in the nanocomposite sample. The BET-specific surface area was determined to be significantly high, approximately 68 m<sup>2</sup>/g, with a narrow pore size distribution and an average pore size of around 36.7 nm. The biocompatibility studies using the MTT assay on human lung adenocarcinoma alveolar basal epithelial cells (A549) demonstrated the more than 80 % cell viability at a concentration 50 μg/ml. These results highlight the potential of mesoporous ZnO embedded CeF<sub>3</sub> nanoparticles as an effective platform for enhanced X-ray PDT.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"163 ","pages":"Article 107918"},"PeriodicalIF":3.4,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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