Journal of Thermal Analysis and Calorimetry最新文献

{"title":"Recent studies of thermal analysis and calorimetry in Central and Eastern Europe","authors":"","doi":"10.1007/s10973-025-14089-9","DOIUrl":"10.1007/s10973-025-14089-9","url":null,"abstract":"","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 2","pages":"837 - 840"},"PeriodicalIF":3.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of lithium bis(oxalato)borate salt on the structure, thermal properties and ionic conductivity of poly(ethylene oxide)","authors":"Irena Krešić,&nbsp;Nataša Stipanelov Vrandečić,&nbsp;Matko Erceg,&nbsp;Zoran Grubač,&nbsp;Ante Bilušić","doi":"10.1007/s10973-024-13960-5","DOIUrl":"10.1007/s10973-024-13960-5","url":null,"abstract":"<div><p>Polymer electrolytes based on poly(ethylene oxide) (PEO) and a lithium bis(oxalato)borate salt (LiBOB) have shown their potential for applications as electrolytes for lithium-ion polymer batteries. However, there are not enough studies to clarify the direct impact of LiBOB on the properties of PEO in polymer electrolytes. Therefore, the aim of this study is to clarify the dependence of the addition of the LiBOB salt on the structure, thermal properties and ionic conductivity of PEO. Solid polymer electrolytes with different ether oxygen to lithium ions molar ratios (EO/Li) (PEX) were prepared. Fourier transform infrared spectroscopy (FTIR) analysis showed that the salt concentration has affected the structure of PEO, especially its crystallinity as one of the most important properties affecting the ionic conductivity of PEO-based polymer electrolytes. These results were confirmed by differential scanning calorimetry (DSC) analysis as the degree of crystallinity decreases with the addition of salt. Moreover, DSC analysis revealed the composition of the samples at which crystallinity of PEO completely disappeared. Scanning electron microscopy (SEM) showed the modifications in surface morphological features of PEX as a function of LiBOB concentration. The results obtained from these studies were correlated with the most important result for the application of polymer electrolyte, that of electrochemical impedance spectroscopy (EIS). It revealed the maximum ionic conductivity at room temperature as high as 1.68∙10^–4 S cm^⁻1 for sample with EO/Li molar ratio 5. The importance of this result lies in the promising increase of five orders of magnitude compared to the ionic conductivity of PEO and in reaching the practical applicable ionic conductivity. Furthermore, thermogravimetric analysis (TGA) showed that the addition of salt causes a more complex non-isothermal decomposition of the prepared samples compared to pure PEO.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 2","pages":"1263 - 1273"},"PeriodicalIF":3.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EDITORIAL 2025: Journal of Thermal Analysis and Calorimetry","authors":"Imre Miklós Szilágyi,&nbsp;Alfréd Kállay-Menyhárd,&nbsp;János Kristóf,&nbsp;Sophie Korda","doi":"10.1007/s10973-024-13925-8","DOIUrl":"10.1007/s10973-024-13925-8","url":null,"abstract":"","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 1","pages":"1 - 16"},"PeriodicalIF":3.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydration and thermal properties of alkaline hybrid cements based on waste clay and solid alkaline activators","authors":"Dana Kubátová,&nbsp;Anežka Zezulová,&nbsp;Michaela Krejčí Kotlánová,&nbsp;Eliška Křivánková,&nbsp;Martin Boháč,&nbsp;Theodor Staněk","doi":"10.1007/s10973-024-13944-5","DOIUrl":"10.1007/s10973-024-13944-5","url":null,"abstract":"<div><p>The cement industry is actively pursuing sustainable alternatives to reduce CO₂ emissions and combat climate change. This study focuses on replacing Portland cement (PC) with rotary kiln flue dust (RFD), a byproduct of metakaolin production. The research investigates the viability of using moderately alkaline activators, including Na₂SO₄, Na₂CO₃, K₂SO₄, and K₂CO₃, to achieve alkali activation without the need for high-temperature calcination, which consumes a lot of energy. The experimental mixtures, comprising 75% RFD, 20% PC, and 5% alkaline activator, exhibit promising results in terms of compressive and flexural strengths. Na₂SO₄ enhances the mechanical properties of the binder. Synergic effect of alkaline activator and PC accelerate reaction original raw material, leading to the formation of ettringite. Conversely, carbonate activators extend the setting time and delay reactions, impacting the early age properties of the binder. The study also explores the thermal stability of the binders, demonstrating a notable impact of alkaline activators on the expansion and contraction behaviors during heating. The findings contribute with valuable insights into the design and optimization of eco-friendly alkali-activated binders, addressing the need for sustainable construction materials with enhanced performance and durability. This research represents a significant step toward developing environmentally preferable cementitious materials, paving the way for the construction industry to adopt more sustainable practices and reduce its ecological footprint.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 2","pages":"1105 - 1117"},"PeriodicalIF":3.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal stability and Ar + ion irradiation behaviour of SLM AlSi10Mg alloy post-processed via KOBO extrusion method","authors":"Przemysław Snopiński,&nbsp;Krzysztof Matus,&nbsp;Mariusz Król,&nbsp;Tymon Warski,&nbsp;Michal Kotoul,&nbsp;Marek Barlak,&nbsp;Katarzyna Nowakowska-Langier","doi":"10.1007/s10973-024-13940-9","DOIUrl":"10.1007/s10973-024-13940-9","url":null,"abstract":"<div><p>Ultra-fine-grained (UFG) and nanotwinned (NT) materials are anticipated to exhibit exceptional resistance to irradiation due to their significant volume fraction of grain boundaries. However, a notable drawback is their susceptibility to grain coarsening at elevated temperatures, which significantly limits their practical application as irradiation-resistant materials, particularly in high-temperature environments. In this study, an AlSi10Mg alloy, prepared using laser powder bed fusion (LPBF), underwent post-processing via the KOBO extrusion method, resulting in an ultra-fine-grained microstructure with an enhanced fraction of coincident site lattice (CSL) twin boundaries. The investigation was conducted in three phases. The first phase involved modelling radiation damage to gain insights into the expected behaviour of the microstructures under irradiation. The second phase included a comprehensive analysis of the microstructures of both as-built and KOBO-processed samples using light, scanning, and transmission electron microscopy. This analysis revealed an ultra-fine-grained microstructure with a mean grain size of approximately 0.8 µm and an increase in the fraction of CSL boundaries from 30% in the as-built state to 42% following KOBO extrusion. In the third phase, the thermal stability of both samples was assessed through annealing experiments conducted for 1 h across a temperature range of 300–500 °C, with 50 °C intervals. To further explore the impact of the nanotwinned microstructure on thermal stability, irradiation experiments were conducted using 60 keV He⁺ ions to a dose of 5 × 10¹⁷ ions cm⁻² at 130 °C. The results indicated an improved irradiation resistance in the KOBO-processed sample, as evidenced by a thinner sponge-like structure formation upon Ar⁺-ion irradiation compared to the as-built counterpart.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 2","pages":"991 - 1012"},"PeriodicalIF":3.0,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic upgrading of oil products generated by retorting Dachengzi oil shale over different catalysts","authors":"Sha Wang,&nbsp;Jinbiao Yan,&nbsp;Bin Hu,&nbsp;Huarong Zhang,&nbsp;Lipei Qiu,&nbsp;Jun Shen,&nbsp;Bin Chen,&nbsp;Xiumin Jiang,&nbsp;Yun Guo,&nbsp;Cong Shi,&nbsp;Xiang Ge","doi":"10.1007/s10973-024-13908-9","DOIUrl":"10.1007/s10973-024-13908-9","url":null,"abstract":"<div><p>Dachengzi oil shale samples were retorted over Fe₂O₃ and CaCO₃ in a small reactor to evaluate their catalytic effects on oil yield and quality. The results indicated two catalysts enhanced kerogen reactivity and secondary reactions of pyrolysis products, which slightly improved the shale oil yield but significantly upgraded pyrolysis volatiles. Adding catalysts facilitated the cracking reactions of heteroatomic compounds, increased the selectivity of aromatic hydrocarbons and promoted olefin aromatization. Fe₂O₃ produced shale oil with lower 1-olefins, aromatics, N and S contents, which more obviously catalyzed kerogen decomposition to improve the heavy fractions and asphaltenes. The total n-paraffins content was about twice that of total 1-olefins in the derived shale oils which mainly contained bicyclic and tricyclic aromatic compounds. Using catalysts increased the total n-paraffins content and PACs with high ring numbers. Catalytic cracking of naphthalenes more easily occurred over Fe₂O₃. Fe₂O₃ was more favorable to obtain high shale oil yield and quality than CaCO₃.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 1","pages":"273 - 289"},"PeriodicalIF":3.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of thermal properties of Al–Cu eutectic alloy for phase change energy storage applications","authors":"Dragan Manasijević,&nbsp;Ljubiša Balanović,&nbsp;Nicanor Cimpoesu,&nbsp;Ivana Marković,&nbsp;Milan Gorgievski,&nbsp;Uroš Stamenković,&nbsp;Aleksandra Stepanović","doi":"10.1007/s10973-024-13952-5","DOIUrl":"10.1007/s10973-024-13952-5","url":null,"abstract":"<div><p>The knowledge of thermal properties such as thermal conductivity, specific heat, and latent heat of melting is essential for the development of phase change materials (PCMs) for latent heat energy storage applications. Due to their good properties, aluminum-based eutectic alloys have become the most widely studied metal-based PCMs. In the present study, microstructure, thermal diffusivity, thermal conductivity, specific heat capacity, and latent heat of melting of the Al-33.6 mass% Cu eutectic alloy were examined using scanning electron microscopy, energy dispersion spectroscopy, differential scanning calorimetry, and light flash method. The results show that the microstructure of the investigated alloy consists of fine and coarse (Al) + Al₂Cu eutectic regions. Specific heat, thermal diffusivity, and thermal conductivity increase with increasing temperature in the temperature range 25–400 °C. The thermal conductivity of the studied alloy at room temperature is 134.3 Wm⁻¹ K⁻¹. The measured latent heat is 319.5 Jg⁻¹. The obtained results indicate that the Al–Cu eutectic alloy has considerable potential for application in the field of phase change energy storage materials.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 1","pages":"77 - 85"},"PeriodicalIF":3.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Viscosity and Thermal Conductivity in Boger Nanofluid Flow through Porous Disk: Finite Difference Analysis","authors":"Qadeer Raza,&nbsp;Xiaodong Wang,&nbsp;Bagh Ali","doi":"10.1007/s10973-024-13746-9","DOIUrl":"10.1007/s10973-024-13746-9","url":null,"abstract":"<div><p>A constructed design-based model is employed to analyze the multiple enhancements in viscosity and thermal conductivity within a porous disk filled with Ag-water nanofluid. For the first time, we are applying the concept of utilizing diverse thermophysical properties, including viscosity and thermal conductivity impediments, to analyze entropy generation within a system. The energy equation incorporates a binary chemical reaction and Arrhenius activation energy. We utilize a system of nonlinear partial differential equations to establish the mathematical framework governing the flow. This is subsequently transformed into a nondimensional partial differential form via dimensionless variables. Numerical investigations employ a finite difference scheme, exploring diverse values of the related physical parameters. A finite difference scheme implemented in MATLAB is used to obtain numerical and graphical results, highlighting the impact of various parameters on the 2D and 3D profiles of velocity, temperature, concentration, entropy generation, skin friction coefficient, and Nusselt number for different non-dimensional parameters. The obtained output shows that boosting the values solvent fraction factor <span>((beta _1))</span> and relaxation time ratio <span>((beta _2))</span> enhances the velocity profile of NS&amp;LVPC nanofluid in momentum boundary layer thickness on both porous disk, outperforming S&amp;EVPC and NS&amp;VPC configurations. Raising the temperature difference (<span>(gamma _{*})</span>) and activation energy (E) reduces the heat and mass transfer in the nanofluid flow over a lower porous disk. Higher values of Eckert number (Ec), magnetic parameters (M), thermal radiation (Rd), and concentration ratio parameter <span>((T_text{c}))</span> result in increased entropy generation profiles in both porous disks. As the volume fraction increases, the heat transfer rate exhibits an inverse trend in the Nusselt number for both porous disks. However, the nanolayer thermal conductivity <span>((Nu_3))</span> performs much better than spherical <span>((Nu_1))</span> and non-spherical thermal conductivity <span>((Nu_2))</span>. Our findings indicate that flow performance is significantly better with nanolayer thermal conductivity and low viscosity particle concentration (NS&amp;LVPC) compared to spherical thermal conductivity with effective viscosity particle concentration (S&amp;EVPC) and nonspherical thermal conductivity with low viscosity particle concentration (NS&amp;VPC).</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 1","pages":"451 - 477"},"PeriodicalIF":3.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The disassembly analysis and thermal runaway characteristics of NCM811 family battery cells","authors":"Aiwen Guo,&nbsp;Zhixiang Xing,&nbsp;Yanyan Liu,&nbsp;Wanzheng Lu,&nbsp;Aoqi Wang,&nbsp;Jie Wu,&nbsp;Guoqiang Chai,&nbsp;Yaqing Shi,&nbsp;Juncheng Jiang,&nbsp;Yanan Ma","doi":"10.1007/s10973-024-13939-2","DOIUrl":"10.1007/s10973-024-13939-2","url":null,"abstract":"<div><p>Lithium-ion batteries are susceptible to thermal runaway during thermal abuse, potentially resulting in safety hazards such as fire and explosion. Therefore, it is crucial to investigate the internal thermal stability and characteristics of thermal runaway in battery pouch cells. This study focuses on dismantling a power lithium-ion battery, identified as Ni-rich LiNi_xCo_yMn_1-x-yO₂ (NCM811, LiNi_0.83Co_0.12Mn_0.05O₂) lithium-ion battery pouch cell through material characterization methods. The authors delve into the stability of the main component materials of lithium-ion cells and the mechanism of the thermal runaway induced by the cells. In addition, thermal runaway experiments are conducted under overheating conditions to analyze the effect of different states of charge (<i>SOC</i>) levels on battery cell temperature and gas changes. This information can serve as an active safety warning signal and allow for an extended window for passive safety measures. In conclusion, (i) uniform internal porosity facilitates efficient Li-ion diffusion. (ii) Thermal stability hierarchy: cathode &gt; anode &gt; separator. (iii) The elevated <i>SOC</i> levels expand risks, necessitating integrated monitoring of temperature, thermal ramp rate, and CO evolution for precise hazard alerts.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 1","pages":"141 - 149"},"PeriodicalIF":3.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The development of a 500 g macro-thermogravimetric analyzer and its typical application in the thermal decomposition of limestone","authors":"Lixin Sun,&nbsp;Qitu Zhang","doi":"10.1007/s10973-024-13834-w","DOIUrl":"10.1007/s10973-024-13834-w","url":null,"abstract":"<div><p>This work developed a macro-thermogravimetric analyzer (macro-TGA) of maximal 500 g sample capacity as the mini-pilot system to evaluate the thermochemistry process for industrial bulk samples, which is the first report about the lever-equal beam balance-based wide-range/variations (500 g) macro-TGA with high precision, excellent reliability and low cost. The macro-TGA adopts many novel designs to become one of the most advanced macro-TGA, including eight groups of reinforced parallel coils and magnetic cores as the electronic mass with enough force moment weighing 500 g mass, elaborately arranged blast fences and gas distribution tube with minimum disturbance from gas flow, as well as a all-sided ventilated ceramic crucible coupling a mobile thermocouple with minimal influence of mass/heat transfer from apparatus itself. As a typical application case, the thermal decomposition behaviors and apparent kinetics of industrial bulk limestone were evaluated by this macro-TGA. Compared with results from micro-TGA, the industrial bulk limestone in macro-TGA exhibits completely different thermal decomposition behaviors with obviously elevated initial thermal decomposition temperature, significantly prolonged thermal decomposition time as well as different apparent activation energies, which can be attributed to significant differences between bulk and fine limestone particles in terms of heat transfer resistance and inherent structure. The demonstrated wide-range/variations lever-equal beam balance-based macro-TGA with good reliability will become a powerful mini-pilot instrument to evaluate the thermal decomposition behaviors and apparent kinetics of industrial bulk samples with large mass/size.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 1","pages":"259 - 271"},"PeriodicalIF":3.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}