Advanced Powder Technology最新文献

英文中文

Full title (Editorial Board Members)

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/S0921-8831(25)00017-2

引用次数: 0

Cross bond DEM (XB-DEM) for analyzing deformation and breakage behavior of particles

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2024.104762

Kizuku Kushimoto, Junya Kano

Cross Bond Discrete Element Method (XB-DEM) was developed as a new simulation model for analyzing the deformation and breakage behavior of particles. A key feature of XB-DEM is that the parameters correlated with the deformation and breakage behavior of particles can uniquely be determined by single particle compression tests. In XB-DEM, a particle was represented by a cluster of constituent particles whose center and surface vicinity were connected with the bond units that have the same components. The bond unit was composed of a bond spring and a bond damper and ruptured when the extension of the bond unit exceeded the rupture extension. Consequently, the parameters that correlated with the deformation and breakage behavior of the particles were only the bond spring coefficient and the rupture extension of the bond unit, considering that the bond damper coefficient was set to achieve critical damping. It was confirmed that the parameters of XB-DEM can be determined by the slope and breakage displacement of load–displacement diagrams of single particle compression tests. Furthermore, the deformation and breakage behavior of the simulated particles coincided with the experimental observations, and the simulated load–displacement diagrams quantitatively agreed with the measured ones.

{"title":"Cross bond DEM (XB-DEM) for analyzing deformation and breakage behavior of particles","authors":"Kizuku Kushimoto, Junya Kano","doi":"10.1016/j.apt.2024.104762","DOIUrl":"10.1016/j.apt.2024.104762","url":null,"abstract":"<div><div>Cross Bond Discrete Element Method (XB-DEM) was developed as a new simulation model for analyzing the deformation and breakage behavior of particles. A key feature of XB-DEM is that the parameters correlated with the deformation and breakage behavior of particles can uniquely be determined by single particle compression tests. In XB-DEM, a particle was represented by a cluster of constituent particles whose center and surface vicinity were connected with the bond units that have the same components. The bond unit was composed of a bond spring and a bond damper and ruptured when the extension of the bond unit exceeded the rupture extension. Consequently, the parameters that correlated with the deformation and breakage behavior of the particles were only the bond spring coefficient and the rupture extension of the bond unit, considering that the bond damper coefficient was set to achieve critical damping. It was confirmed that the parameters of XB-DEM can be determined by the slope and breakage displacement of load–displacement diagrams of single particle compression tests. Furthermore, the deformation and breakage behavior of the simulated particles coincided with the experimental observations, and the simulated load–displacement diagrams quantitatively agreed with the measured ones.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 2","pages":"Article 104762"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of interlocking on the compressive strength of agglomerates composed of cohesive nonconvex particles

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2025.104780

Trieu-Duy Tran , Saeid Nezamabadi , Jean-Philippe Bayle , Lhassan Amarsid , Farhang Radjai

Despite the important role of fine particle agglomerates in nature and powder technology, the physical mechanisms underlying their strength are still not well understood. In particular, the effects of particle shape in association with cohesive-frictional interactions between particles remain to be elucidated on a quantitative basis. We use particle dynamics simulations to create agglomerates composed of hexapod-shaped particles and analyze their mechanical behavior under diametral compression to showcase the effect of non-convex particle shape and interlocking on their compressive strength. Two different regimes are identified as a function of hexapod aspect ratio. In the first regime, where the hexapods are featured by their rough surface, the strength of the agglomerate is primarily controlled by cohesion at the contact level. In the second regime, where the hexapods are characterized by their long arms that can interlock, the tensile strength at the local level is scaled up by orders of magnitude to yield a high compressive strength at the scale of the agglomerate. We demonstrate that this amplifying effect of interlocking is enhanced by friction coefficient between hexapods, which hinders their disentanglement under the action of the external load.

{"title":"Effect of interlocking on the compressive strength of agglomerates composed of cohesive nonconvex particles","authors":"Trieu-Duy Tran , Saeid Nezamabadi , Jean-Philippe Bayle , Lhassan Amarsid , Farhang Radjai","doi":"10.1016/j.apt.2025.104780","DOIUrl":"10.1016/j.apt.2025.104780","url":null,"abstract":"<div><div>Despite the important role of fine particle agglomerates in nature and powder technology, the physical mechanisms underlying their strength are still not well understood. In particular, the effects of particle shape in association with cohesive-frictional interactions between particles remain to be elucidated on a quantitative basis. We use particle dynamics simulations to create agglomerates composed of hexapod-shaped particles and analyze their mechanical behavior under diametral compression to showcase the effect of non-convex particle shape and interlocking on their compressive strength. Two different regimes are identified as a function of hexapod aspect ratio. In the first regime, where the hexapods are featured by their rough surface, the strength of the agglomerate is primarily controlled by cohesion at the contact level. In the second regime, where the hexapods are characterized by their long arms that can interlock, the tensile strength at the local level is scaled up by orders of magnitude to yield a high compressive strength at the scale of the agglomerate. We demonstrate that this amplifying effect of interlocking is enhanced by friction coefficient between hexapods, which hinders their disentanglement under the action of the external load.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 2","pages":"Article 104780"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A normal distribution-based approach to evaluate the effect of dispersion pressure on the minimum ignition temperature of dust clouds

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2024.104763

Gan-Syue Guo , Yu-Chi Cheng , Sheng-Wei Liao , Chi-Min Shu

The minimum ignition temperature of dust clouds (MITC) represents a critical hazard parameter in preventing dust explosions. This study employed the Godbert-Greenwald furnace (G-G furnace) and high-speed camera to investigate the minimum ignition temperature of dust clouds (MITC) of lycopodium, corn starch, and Australian coal dust under various dispersion pressures. The distribution of dust mass falling from an unheated G-G furnace was analyzed using a normal distribution method to assess the influence of dispersion pressure on the ignition temperature of dust clouds. Furthermore, the dust’s flammable limit concentration (FLC) was calculated and compared with the minimum explosive concentration (MEC) of a 20-L apparatus. The findings reveal that as the dispersion pressure decreased, the MITC of lycopodium and corn starch increased by 220 and 80 °C, respectively. Conversely, no notable change was observed in the MITC of Australian coal dust. Compared to 0.05 barg, the flame propagation speeds of lycopodium, corn starch, and Australian coal dust exhibited a notable increase of 4.17, 2.95, and 2.11 m/s, respectively, at 0.5 barg of dispersion pressure. The discrepancies between the FLC and the MEC can be attributed to variations in the ignition sources and the presence of a dust disperser.

{"title":"A normal distribution-based approach to evaluate the effect of dispersion pressure on the minimum ignition temperature of dust clouds","authors":"Gan-Syue Guo , Yu-Chi Cheng , Sheng-Wei Liao , Chi-Min Shu","doi":"10.1016/j.apt.2024.104763","DOIUrl":"10.1016/j.apt.2024.104763","url":null,"abstract":"<div><div>The minimum ignition temperature of dust clouds (<em>MITC</em>) represents a critical hazard parameter in preventing dust explosions. This study employed the Godbert-Greenwald furnace (G-G furnace) and high-speed camera to investigate the minimum ignition temperature of dust clouds <em>(MITC</em>) of lycopodium, corn starch, and Australian coal dust under various dispersion pressures. The distribution of dust mass falling from an unheated G-G furnace was analyzed using a normal distribution method to assess the influence of dispersion pressure on the ignition temperature of dust clouds. Furthermore, the dust’s flammable limit concentration <em>(FLC</em>) was calculated and compared with the minimum explosive concentration (<em>MEC</em>) of a 20-L apparatus. The findings reveal that as the dispersion pressure decreased, the <em>MITC</em> of lycopodium and corn starch increased by 220 and 80 °C, respectively. Conversely, no notable change was observed in the <em>MITC</em> of Australian coal dust. Compared to 0.05 barg, the flame propagation speeds of lycopodium, corn starch, and Australian coal dust exhibited a notable increase of 4.17, 2.95, and 2.11 m/s, respectively, at 0.5 barg of dispersion pressure. The discrepancies between the <em>FLC</em> and the <em>MEC</em> can be attributed to variations in the ignition sources and the presence of a dust disperser.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 2","pages":"Article 104763"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Powder engineering of MXene-based heterojunction materials for photocatalysis and gas sensor applications

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2025.104789

Vatra Reksa Ananda , Farah Nur Ramadhan , Azizah Mirza Kautsari , Tahta Amrillah , Angga Hermawan , Yoki Yulizar , Jarnuzi Gunlazuardi , Tohru Sekino , Shin-ichi Orimo , Shu Yin

MXene-based heterojunction materials have shown great promise in photocatalysis and sensing applications due to their unique structural and electronic properties. The synthesis of MXenes typically involves a top-down approach using MAX phase precursors, where the choice of etchants such as HF, LiF/HCl, or molten salts can significantly influence the surface termination, interlayer spacing, and defect density of the resulting MXenes. To further enhance the performance of MXenes, they are often combined with semiconductor materials to form heterojunction structures through various synthesis approaches, including self-assembly, ultrasonication, hydrothermal, and solvothermal methods. These heterostructures leverage the synergistic effects arising from the interface between MXenes and semiconductors, leading to improved charge separation, increased active sites, and enhanced adsorption capabilities, which are crucial for photocatalysis and sensing applications. The review highlights the critical role of powder engineering in the synthesis and performance optimization of MXene-based heterojunction materials, providing valuable insights for the continued advancement of these technologies.

{"title":"Powder engineering of MXene-based heterojunction materials for photocatalysis and gas sensor applications","authors":"Vatra Reksa Ananda , Farah Nur Ramadhan , Azizah Mirza Kautsari , Tahta Amrillah , Angga Hermawan , Yoki Yulizar , Jarnuzi Gunlazuardi , Tohru Sekino , Shin-ichi Orimo , Shu Yin","doi":"10.1016/j.apt.2025.104789","DOIUrl":"10.1016/j.apt.2025.104789","url":null,"abstract":"<div><div>MXene-based heterojunction materials have shown great promise in photocatalysis and sensing applications due to their unique structural and electronic properties. The synthesis of MXenes typically involves a top-down approach using MAX phase precursors, where the choice of etchants such as HF, LiF/HCl, or molten salts can significantly influence the surface termination, interlayer spacing, and defect density of the resulting MXenes. To further enhance the performance of MXenes, they are often combined with semiconductor materials to form heterojunction structures through various synthesis approaches, including self-assembly, ultrasonication, hydrothermal, and solvothermal methods. These heterostructures leverage the synergistic effects arising from the interface between MXenes and semiconductors, leading to improved charge separation, increased active sites, and enhanced adsorption capabilities, which are crucial for photocatalysis and sensing applications. The review highlights the critical role of powder engineering in the synthesis and performance optimization of MXene-based heterojunction materials, providing valuable insights for the continued advancement of these technologies.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 3","pages":"Article 104789"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

CFD-DEM study on mixing and segregation characteristics for binary column-shape particles in a liquid–solid fluidized bed

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2025.104788

Lei Xie, Shuyan Wang, Baoli Shao, Xi Chen, Nuo Ding, Yimei Ma

In this paper, the Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) is applied to investigate the mixing and segregation of binary cylinders with different densities in a three-dimensional liquid–solid fluidized bed. The column-shape particles are constructed with a super-quadric model. The simulation results are in good agreement with the previous experimental data. The influences of aspect ratio and density ratio of binary particles on the mixing quality and final segregation extent are examined. Simulation results show that light particles are inclined to occupy at the top of the granular bed, whereas heavy ones concentrate in the bottom. As particle aspect ratio deviates from unity, i.e. disc-like or rod-like particles, the mixing index is increased and segregation degree is decreased. Particle translation is the main movement mode, however, disc- or rod-like particles are more easily to rotate and need more energy to be driven, comparing with approximately spherical particles. The force analysis in terms of the contact force and drag force indicates that particle shape influences collision probability, resulting in greater contact forces in terms of the disc-like and rod-like particles. Compared to disc-like and rod-like particles, approximately spherical particles experience the least drag force, thereby inhibiting mixing between binary particles. The particle orientation of disc-like and rod-like particles is inclined to the vertical direction in the fluidized state. Furthermore, particle dispersion coefficients are in the range of 10^-3 to 10^-2 m²/s, whose vertical direction is one order of magnitude greater than the horizontal directions. Smaller density ratios lead to larger particle dispersion coefficients.

{"title":"CFD-DEM study on mixing and segregation characteristics for binary column-shape particles in a liquid–solid fluidized bed","authors":"Lei Xie, Shuyan Wang, Baoli Shao, Xi Chen, Nuo Ding, Yimei Ma","doi":"10.1016/j.apt.2025.104788","DOIUrl":"10.1016/j.apt.2025.104788","url":null,"abstract":"<div><div>In this paper, the Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) is applied to investigate the mixing and segregation of binary cylinders with different densities in a three-dimensional liquid–solid fluidized bed. The column-shape particles are constructed with a super-quadric model. The simulation results are in good agreement with the previous experimental data. The influences of aspect ratio and density ratio of binary particles on the mixing quality and final segregation extent are examined. Simulation results show that light particles are inclined to occupy at the top of the granular bed, whereas heavy ones concentrate in the bottom. As particle aspect ratio deviates from unity, i.e. disc-like or rod-like particles, the mixing index is increased and segregation degree is decreased. Particle translation is the main movement mode, however, disc- or rod-like particles are more easily to rotate and need more energy to be driven, comparing with approximately spherical particles. The force analysis in terms of the contact force and drag force indicates that particle shape influences collision probability, resulting in greater contact forces in terms of the disc-like and rod-like particles. Compared to disc-like and rod-like particles, approximately spherical particles experience the least drag force, thereby inhibiting mixing between binary particles. The particle orientation of disc-like and rod-like particles is inclined to the vertical direction in the fluidized state. Furthermore, particle dispersion coefficients are in the range of 10<sup>-3</sup> to 10<sup>-2</sup> m<sup>2</sup>/s, whose vertical direction is one order of magnitude greater than the horizontal directions. Smaller density ratios lead to larger particle dispersion coefficients.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 2","pages":"Article 104788"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Novel in-situ core shell structured Fe-ferrite soft magnetic composite powder processed by controlled oxidation

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2024.104779

Janapareddi Sravan Kumar , Deepak Kumar , Vajinder Singh , Joydip Joardar , Malobika Karanjai

The present work focuses on a novel approach of forming core–shell soft composite powder of Fe-Fe₃O₄ having ferrite as an electrically insulating layer around Fe-powder. The approach involves simple low-temperature in-situ oxidation-diffusion to obviate the interface delamination of core–shell structure while enabling % phase-control of ferromagnetic-core and ferrimagnetic-shell with time–temperature variation. Fe-powder was heated upto 400 °C-600 °C and subjected to oxidation for 5–15 min before cooling under inert atmosphere (N₂). A thorough investigation of core–shell powders was done using Micro-XRD, FE-SEM, EBSD and Saturation magnetization (Ms) was measured using PPMS. The shell thickness increased with increasing temperature and oxidation time. Co-relation between phase percentages in the core–shell powder & Ms values were established. The process resulted in higher Ms values (209–136 emu/g) compared to those reported in the literature in such powders with average shell thickness ranging from 0.4 µm to 14.3 µm, retaining the characteristic soft magnetic property of Fe-Fe₃O₄ composite powder.

{"title":"Novel in-situ core shell structured Fe-ferrite soft magnetic composite powder processed by controlled oxidation","authors":"Janapareddi Sravan Kumar , Deepak Kumar , Vajinder Singh , Joydip Joardar , Malobika Karanjai","doi":"10.1016/j.apt.2024.104779","DOIUrl":"10.1016/j.apt.2024.104779","url":null,"abstract":"<div><div>The present work focuses on a novel approach of forming core–shell soft composite powder of Fe-Fe<sub>3</sub>O<sub>4</sub> having ferrite as an electrically insulating layer around Fe-powder. The approach involves simple low-temperature in-situ oxidation-diffusion to obviate the interface delamination of core–shell structure while enabling % phase-control of ferromagnetic-core and ferrimagnetic-shell with time–temperature variation. Fe-powder was heated upto 400 °C-600 °C and subjected to oxidation for 5–15 min before cooling under inert atmosphere (N<sub>2</sub>). A thorough investigation of core–shell powders was done using Micro-XRD, FE-SEM, EBSD and Saturation magnetization (Ms) was measured using PPMS. The shell thickness increased with increasing temperature and oxidation time. Co-relation between phase percentages in the core–shell powder & Ms values were established. The process resulted in higher Ms values (209–136 emu/g) compared to those reported in the literature in such powders with average shell thickness ranging from 0.4 µm to 14.3 µm, retaining the characteristic soft magnetic property of Fe-Fe<sub>3</sub>O<sub>4</sub> composite powder.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 2","pages":"Article 104779"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Construction and electrochemical energy storage performance of FeS2@rGO-H/S

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2025.104785

Wen Fengchun, Song Xi, Wu Jun, Xie Ruijie, Pan Mengye, Fu Junxian, Jiang Qi

Lithium-Sulphur (Li-S) batteries were one of the most promising batteries for large-capacity energy storage and electric vehicles. However, the shuttle effect of polysulfide lithium, the volume expansion and the poor electrical conductivity of sulfur in the process of charge and discharge restricted its application. In this paper, the authors constructed a composite of FeS₂@rGO-H as the carrier of sulfur. XRD, Raman, XPS SEM and BET analyses were used to characterize the obtained samples. The results showed that the prepared reduced graphene (rGO-H) obtained by the hydrazine hydrate and hydrothermal reduction method had a very high degree of reduction, which helped to accelerate the rapid transport of lithium ions in the positive sulfur electrode. And the FeS₂ fixed on rGO-H could inhibit the “shuttle effect” of polysulfide lithium and improved the cycling performance of sulfur positive electrode. Thus, the obtained composite FeS₂@rGO-H/S exhibited excellent electrochemical properties: its initial discharge capacity was up to 1529.2mAh/g at 0.1C, which was 91 % of the theoretical specific capacity of S. Even at a high rate of 5C, it still had a reversible discharge capacity of 629.9mAh/g. After 200 cycles at 1C, the discharge capacity attenuated from 1037.3 to 784.7mAh/g.

{"title":"Construction and electrochemical energy storage performance of FeS2@rGO-H/S","authors":"Wen Fengchun, Song Xi, Wu Jun, Xie Ruijie, Pan Mengye, Fu Junxian, Jiang Qi","doi":"10.1016/j.apt.2025.104785","DOIUrl":"10.1016/j.apt.2025.104785","url":null,"abstract":"<div><div>Lithium-Sulphur (Li-S) batteries were one of the most promising batteries for large-capacity energy storage and electric vehicles. However, the shuttle effect of polysulfide lithium, the volume expansion and the poor electrical conductivity of sulfur in the process of charge and discharge restricted its application. In this paper, the authors constructed a composite of FeS<sub>2</sub>@rGO-H as the carrier of sulfur. XRD, Raman, XPS SEM and BET analyses were used to characterize the obtained samples. The results showed that the prepared reduced graphene (rGO-H) obtained by the hydrazine hydrate and hydrothermal reduction method had a very high degree of reduction, which helped to accelerate the rapid transport of lithium ions in the positive sulfur electrode. And the FeS<sub>2</sub> fixed on rGO-H could inhibit the “shuttle effect” of polysulfide lithium and improved the cycling performance of sulfur positive electrode. Thus, the obtained composite FeS<sub>2</sub>@rGO-H/S exhibited excellent electrochemical properties: its initial discharge capacity was up to 1529.2mAh/g at 0.1C, which was 91 % of the theoretical specific capacity of S. Even at a high rate of 5C, it still had a reversible discharge capacity of 629.9mAh/g. After 200 cycles at 1C, the discharge capacity attenuated from 1037.3 to 784.7mAh/g.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 2","pages":"Article 104785"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Inside Front Cover (Aims & Scope, Editors)

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/S0921-8831(25)00016-0

引用次数: 0

Data interpolation and characteristic identification for particle segregation behavior and CNN-based dynamics correlation modeling

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-02-01 DOI: 10.1016/j.apt.2024.104761

Wei Wang , Yanze Wang , Shengchao Yang , Jinpeng Qiao , Jinshuo Yang , Miao Pan , Zhenyong Miao , Yu Zhang , Sabereh Nazari , Chenlong Duan

Particle segregation behavior in a binary granular bed subject to vibration has been investigated. An algorithm based on Locally Weighted Scatterplot Smoothing (LoWeSS) was developed for trajectory reconstruction and motion characteristics extraction of segregated particles. The Kriging interpolation was introduced to address the problem of the sparse spatial distribution of segregation velocity data, and the K-means clustering algorithm was used and indicated that the discrete distribution of segregation velocity data at layers of different heights in the granular bed has regionalized shape characteristics, including circular, elliptic, fusiform, and mono-symmetric shapes. Segregation velocity correlates well to dimensionless amplitude (A_d) and frequency (f_d). When A_d ∈ [0.6, 0.7] and f_d ∈ [0.75, 1], the ascending velocity of segregated particles within the lower layer of the granular bed is relatively fast, and some of the large particles initially located at the higher layer will first fall as the packing structure reorganization and then start to segregate. In addition, a data preprocessing algorithm based on Local Spatiotemporal Correlation Interpolating (LoStCoI) is developed to repair granular temperature data. The depth-wise spatiotemporal residual convolutional neural networks (CNNs) with the Spatial Pyramid Pooling (SPP) module can well characterize the correlation between granular temperature and segregation velocity. The validation errors for both the regression and classification tasks are less than 0.1, and the comprehensive evaluation index also achieves 0.9. Specifically, when provided with a sufficient amount of training data, the evaluation metrics for the regression task on the validation dataset exceed 99 %, and those for the classification task even reach as high as 99.5 %.

{"title":"Data interpolation and characteristic identification for particle segregation behavior and CNN-based dynamics correlation modeling","authors":"Wei Wang , Yanze Wang , Shengchao Yang , Jinpeng Qiao , Jinshuo Yang , Miao Pan , Zhenyong Miao , Yu Zhang , Sabereh Nazari , Chenlong Duan","doi":"10.1016/j.apt.2024.104761","DOIUrl":"10.1016/j.apt.2024.104761","url":null,"abstract":"<div><div>Particle segregation behavior in a binary granular bed subject to vibration has been investigated. An algorithm based on Locally Weighted Scatterplot Smoothing (LoWeSS) was developed for trajectory reconstruction and motion characteristics extraction of segregated particles. The Kriging interpolation was introduced to address the problem of the sparse spatial distribution of segregation velocity data, and the K-means clustering algorithm was used and indicated that the discrete distribution of segregation velocity data at layers of different heights in the granular bed has regionalized shape characteristics, including circular, elliptic, fusiform, and mono-symmetric shapes. Segregation velocity correlates well to dimensionless amplitude (<em>A<sub>d</sub></em>) and frequency (<em>f<sub>d</sub></em>). When <em>A<sub>d</sub></em> ∈ [0.6, 0.7] and <em>f<sub>d</sub></em> ∈ [0.75, 1], the ascending velocity of segregated particles within the lower layer of the granular bed is relatively fast, and some of the large particles initially located at the higher layer will first fall as the packing structure reorganization and then start to segregate. In addition, a data preprocessing algorithm based on Local Spatiotemporal Correlation Interpolating (LoStCoI) is developed to repair granular temperature data. The depth-wise spatiotemporal residual convolutional neural networks (CNNs) with the Spatial Pyramid Pooling (SPP) module can well characterize the correlation between granular temperature and segregation velocity. The validation errors for both the regression and classification tasks are less than 0.1, and the comprehensive evaluation index also achieves 0.9. Specifically, when provided with a sufficient amount of training data, the evaluation metrics for the regression task on the validation dataset exceed 99 %, and those for the classification task even reach as high as 99.5 %.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 2","pages":"Article 104761"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Advanced Powder Technology

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀