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TiO2/CNTs dual-decorated functional carbon foam as self-supporting sulfur host for boosting the adsorption and redox kinetics of polysulfides
IF 6.2 2区 材料科学
Journal of Alloys and Compounds Pub Date : 2024-12-21 DOI: 10.1016/j.jallcom.2024.178225
Qian Su, Xingyue Yin, Yinglei He, Zhe Hu, Junming Guo, Mingwu Xiang, Xiaofang Liu, Wei Bai
{"title":"TiO2/CNTs dual-decorated functional carbon foam as self-supporting sulfur host for boosting the adsorption and redox kinetics of polysulfides","authors":"Qian Su, Xingyue Yin, Yinglei He, Zhe Hu, Junming Guo, Mingwu Xiang, Xiaofang Liu, Wei Bai","doi":"10.1016/j.jallcom.2024.178225","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178225","url":null,"abstract":"Electrochemical properties of lithium-sulfur batteries suffer from the shuttle effect and redox kinetics of polysulfides. In this work, a solvothermal method is employed to rationally construct a self-supporting hybrid carbon foam sulfur host by TiO<sub>2</sub> and CNTs dual-decoration on the basis of the nitrogen-rich melamine foam. This unique hybrid carbon foam exhibits multiple functional merits including the in situ nitrogen-doping, strong chemical adsorption of polysulfides, three-dimensional high conducting network, fast reaction kinetics, good mechanical flexibility. When used to fabricate the self-supporting sulfur cathode composites for lithium-sulfur batteries, the shuttle effect and conversion kinetics of polysulfides are effectively improved. Consequently, the high first discharge capacity of 858.0 mAh g<sup>-1</sup> and reversible capacity of 673.5 mAh g<sup>-1</sup> are delivered at 0.2<!-- --> <!-- -->C after 200 cycles. Even at a relatively high current rate of 1.0<!-- --> <!-- -->C, the 500 cycles long-term cycling performance can be achieved, the corresponding capacity decay per cycle is 0.05%. Besides, the gravimetric capacity (832.0 mAh g<sup>-1</sup>) and areal capacity (7.9 mAh cm<sup>-2</sup>) are also obtained when the sulfur loading is increased to 9.5<!-- --> <!-- -->mg<!-- --> <!-- -->cm<sup>-2</sup>.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"53 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Stretchable, Wirelessly Rechargeable, Body-Integrated Energy Supply System with On-Demand Energy Release
IF 17.6 1区 材料科学
Nano Energy Pub Date : 2024-12-21 DOI: 10.1016/j.nanoen.2024.110612
Jiao Yuan, Zhaopeng Wang, Danli Xia, Hongwei Sheng, Qi Wang, Jinkun Hu, Lingxiao Ma, Fengfeng Li, Huasheng Bi, Haoshsuo Zhang, Daicao Wan, Wenquan Li, Zhaoqian Xie, Kairong Wang, Wei Lan
{"title":"A Stretchable, Wirelessly Rechargeable, Body-Integrated Energy Supply System with On-Demand Energy Release","authors":"Jiao Yuan, Zhaopeng Wang, Danli Xia, Hongwei Sheng, Qi Wang, Jinkun Hu, Lingxiao Ma, Fengfeng Li, Huasheng Bi, Haoshsuo Zhang, Daicao Wan, Wenquan Li, Zhaoqian Xie, Kairong Wang, Wei Lan","doi":"10.1016/j.nanoen.2024.110612","DOIUrl":"https://doi.org/10.1016/j.nanoen.2024.110612","url":null,"abstract":"Stretchable body-integrated energy systems are urgently needed due to the rapid development of wearable and implantable electronic devices. Despite some progress, the challenges of simultaneously achieving sustained energy supply and on-demand release have not been well addressed. Herein, we construct a stretchable, biocompatible energy supply system that seamlessly integrates wireless charging and energy storage modules, as well as a light-controlled switching circuit. The mechanical and electrical properties of the integrated system under various deformation conditions are investigated using finite element analysis. Partially oxidized liquid metal (o-LM) is patterned to prepare the energy-receiving coils, current collector, and electrical connections between different components. Utilizing strong hydrogen bond interaction between o-LM and MXene, biaxial stretchy micro-supercapacitors with high performance are obtained, including high capacitance (121 mF cm<sup>-2</sup>) and excellent stretching stability. A switching circuit consisting of a photodiode and a triode is designed to achieve current amplification and on-demand power output. Demonstrations of the integrated system that powers wearable electronic devices and implantable pulsed electrical stimulation, and the biocompatibility evaluation of the system also confirmed its ability to provide a stable and continuous energy supply.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"2 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction to “Direct Excitation Transfer in Plasmonic Metal-Chalcopyrite Hybrids: Insights from Single Particle Line Shape Analysis”
IF 17.1 1区 材料科学
ACS Nano Pub Date : 2024-12-21 DOI: 10.1021/acsnano.4c16477
Tianhong Ouyang, Yi-Chen Chen, Koustav Kundu, Xingjian Zhong, Yixin Mei, Akilesh Nalluri, Allison M. Dennis, Björn M. Reinhard
{"title":"Correction to “Direct Excitation Transfer in Plasmonic Metal-Chalcopyrite Hybrids: Insights from Single Particle Line Shape Analysis”","authors":"Tianhong Ouyang, Yi-Chen Chen, Koustav Kundu, Xingjian Zhong, Yixin Mei, Akilesh Nalluri, Allison M. Dennis, Björn M. Reinhard","doi":"10.1021/acsnano.4c16477","DOIUrl":"https://doi.org/10.1021/acsnano.4c16477","url":null,"abstract":"The caption of Figure 4 in the text of our publication contains an error. Figure 4 does not contain a plot of all Γ<sub>ET</sub>(ω) data as stated in the caption but of Γ<sub>ET</sub>(ω) data for all AgNP@CuFeS<sub>2</sub> preparations with an average Γ<sub>ET</sub> &gt; 0.3 eV. For completeness, we include below the Γ<sub>ET</sub>(ω) plot for all AgNP@CuFeS<sub>2</sub> preparations. The interpolation (black line) contains a maximum at ω = 2.469 eV, which is nearly identical to the value of 2.489 eV that was determined from the original figure with the narrower Γ<sub>ET</sub> distribution and does not change the interpretation of the data. We apologize for any confusion this error may have created. All authors have approved this correction. Figure 4. Γ<sub>ET</sub> (blue points) for all AgNP@CuFeS<sub>2</sub> conditions plotted as a function of the resonance frequency ω<sub>res</sub>. A polynomial interpolation is included as a black line. The red line shows the simulated scattering spectrum of an individual CuFeS<sub>2</sub> NC (<i>n</i><sub>r</sub> = 1.5000). This article has not yet been cited by other publications.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"31 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of sandwich-structured thermally conductive and insulating composite materials based on electrospinning combined with hot pressing technology
IF 23.2 2区 材料科学
Advanced Composites and Hybrid Materials Pub Date : 2024-12-21 DOI: 10.1007/s42114-024-01162-4
Zijian Wu, Zhengfang Wang, Meng Wang, Defeng Zang, Haiyong Long, Mingqi Sun, Ling Weng, Ning Guo, Junguo Gao
{"title":"Preparation of sandwich-structured thermally conductive and insulating composite materials based on electrospinning combined with hot pressing technology","authors":"Zijian Wu,&nbsp;Zhengfang Wang,&nbsp;Meng Wang,&nbsp;Defeng Zang,&nbsp;Haiyong Long,&nbsp;Mingqi Sun,&nbsp;Ling Weng,&nbsp;Ning Guo,&nbsp;Junguo Gao","doi":"10.1007/s42114-024-01162-4","DOIUrl":"10.1007/s42114-024-01162-4","url":null,"abstract":"<div><p>In this paper, h-BN was firstly exfoliated into functionalized BNNS by ball milling and liquid phase exfoliation techniques. BNNS/PVA composite fiber film was subsequently obtained by electrostatic spinning to realize the directional arrangement of BNNS in the PVA matrix, and BNNS/PVA/PS composite film was obtained by filling the pores inside the fiber film with PS solution. To further improve the thermal conductivity of the composite, carboxylated MWCNT was selected as the second thermally conductive filler, and the MWCNT/PVA/PS composite film was prepared by the same preparation method as BNNS/PVA/PS composite film. Finally, the MWCNT/PVA/PS composite film was placed in the middle layer, the BNNS/PVA/PS composite film was placed in the outer layer, and the thermally conductive composite materials with a novel sandwich structure were obtained by lamination. The combination of electrostatic spinning and hot pressing technology enabled the efficient construction of a high thermal conductivity network with BNNS and MWCNT, and the sandwich structure achieved a balance between high thermal conductivity and electrical insulation. The composite achieved a significant improvement in its in-plane thermal conductivity due to the realization of the directional arrangement of the filler in the in-plane direction. At a filler content of 14.75 wt%, the in-plane thermal conductivity of the composite was increased to 4.69 W/mK, which is nearly 23 times higher than that of the pure polymer. Due to the strict control of the spatial distribution form of MWCNT, the composites still have excellent insulation properties even at high filler content.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 1","pages":""},"PeriodicalIF":23.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Constructing Heterojunction Photocatalyst Systems with Spatial Distribution of Au Single Atoms for CO2 Reduction
IF 9.5 2区 材料科学
ACS Applied Materials & Interfaces Pub Date : 2024-12-21 DOI: 10.1021/acsami.4c17745
Xiaoguang Wang, Lihui Liu, Huiming Cao, Shihao Gong, Honghui Pan, Xiaowen Liu, Pu Wang, Yanrong Zhang
{"title":"Constructing Heterojunction Photocatalyst Systems with Spatial Distribution of Au Single Atoms for CO2 Reduction","authors":"Xiaoguang Wang, Lihui Liu, Huiming Cao, Shihao Gong, Honghui Pan, Xiaowen Liu, Pu Wang, Yanrong Zhang","doi":"10.1021/acsami.4c17745","DOIUrl":"https://doi.org/10.1021/acsami.4c17745","url":null,"abstract":"In single-atomic photocatalyst systems, the spatial distribution of single atoms on heterojunctions and its impact on photocatalytic processes, particularly on carrier dynamics and the CO<sub>2</sub> reduction process involving multielectron reactions, remains underexplored. To address this gap, a WO<sub>3</sub>/TiO<sub>2</sub> nanotube heterojunction with a spatially selective distribution of Au single atoms was developed using an oxygen vacancy anchoring strategy for CO<sub>2</sub> photoreduction. By anchoring Au atoms onto the WO<sub>3</sub> or TiO<sub>2</sub> components, a substantial number of active sites are generated and the electron transfer pathways from the heterojunction toward Au sites are formed, thereby enhancing carrier separation and concentration. As a result, the total yield of CO<sub>2</sub> reduction products increases by 6.3 times and 3.9 times, respectively. More importantly, due to significant differences in adsorption properties, energy band structures, and reaction energy barrier, as well as a 2-fold difference in carrier lifetime, the selective distribution of Au single-atom sites results in completely different CO<sub>2</sub> photoreduction products: when Au atoms are anchored on WO<sub>3</sub> and TiO<sub>2</sub> components, the product selectivity is 67.6% CH<sub>4</sub> and 82.9% CO, respectively. This study clarifies the vital role of the spatial distribution of single atoms on the selectivity of electron-demanding products.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"13 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bifunctional high-strength and anti-shuttling separator based on negatively-charged-cellulose-nanofibers for high-energy and stable flexible Zn-I2 batteries
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2024-12-21 DOI: 10.1016/j.apsusc.2024.162180
Hong Qu, Wei Guo, Wenjing Li, Lianyi Shao, Yiyu Chen, Sulian Su, Lifeng Hang, Guihua Jiang
{"title":"Bifunctional high-strength and anti-shuttling separator based on negatively-charged-cellulose-nanofibers for high-energy and stable flexible Zn-I2 batteries","authors":"Hong Qu, Wei Guo, Wenjing Li, Lianyi Shao, Yiyu Chen, Sulian Su, Lifeng Hang, Guihua Jiang","doi":"10.1016/j.apsusc.2024.162180","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162180","url":null,"abstract":"The flexible aqueous zinc-iodine batteries (FZIBs) show promise for wearable electronics, but the polyiodide shuttling effect limits iodine loading. Here, we develop a high-strength and negatively charged separator based on bio-sustainable and low-cost carboxylated cellulose nanofibers (c-CNFs) to obtain high-performed FZIBs. The negatively charged <img alt=\"single bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" style=\"vertical-align:middle\"/>COO<sup>−</sup> groups on the c-CNFs can repel the shuttling of iodine species and simultaneously enable a robust mechanical strength based on strong hydrogen bonding, allowing for shuttling-free high-loading FZIBs with improved energy and stability. Our research demonstrated the cellulose-based separator to enable FZIBs as a high-energy and stable flexible power supply.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"40 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural, electrical, magnetic transport and quantum transport properties of PbPdO2 thin films: Experimental and first-principles study
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2024-12-21 DOI: 10.1016/j.apsusc.2024.162165
Hai Jia, Liqiang Zeng, Xinyi Zheng, Hongbin Lin, Jian-Min Zhang, Zhiya Lin, Shaoming Ying, Zhigao Huang, Xiaohui Huang
{"title":"Structural, electrical, magnetic transport and quantum transport properties of PbPdO2 thin films: Experimental and first-principles study","authors":"Hai Jia, Liqiang Zeng, Xinyi Zheng, Hongbin Lin, Jian-Min Zhang, Zhiya Lin, Shaoming Ying, Zhigao Huang, Xiaohui Huang","doi":"10.1016/j.apsusc.2024.162165","DOIUrl":"https://doi.org/10.1016/j.apsusc.2024.162165","url":null,"abstract":"The zero-band gap semiconductor PbPdO<sub>2</sub>, with its distinctive energy band structure, holds substantial promise for spintronic device applications. In this study, PbPdO<sub>2</sub> films with different vacancy concentrations and (002) preferred orientation were prepared by sol–gel and pulsed laser deposition (PLD). All films exhibited a positive colossal electroresistance (CER) effect, indicating their potential in spintronics. The critical temperatures (<em>T</em><sub>c</sub>) for films with distinct Pb vacancy concentrations were 260 K, 290 K, and 355 K, respectively. The correlation between <em>T</em><sub>c</sub> and barrier height near O<sup>1-</sup> site was revealed. The distance between O2<em>p</em> and Pb 6<em>s</em>6<em>p</em> band centers is calculated by first-principles, and the barrier model determining <em>T</em><sub>c</sub> is confirmed. Additionally, the magnetic properties of PbPdO<sub>2</sub> come from O<sup>1-</sup> and are affected by the vacancy concentration. The positive CER effect and magnetic source of PbPdO<sub>2</sub> thin films can be well explained by the internal electric field model and first principles. Finally, a crossover between weak anti-localization (WAL) and weak localization (WL) was observed in PbPdO<sub>2</sub> films, indicating that the quantum transport performance of PbPdO<sub>2</sub> films can be achieved by regulating the vacancy content, which provides a comprehensive guide for the design and optimization of PbPdO<sub>2</sub>-based spintronic devices.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"31 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Uncovering the role of hierarchical and heterogeneous structures on strength anisotropy and strain localization of laser power bed fusion AlSi10Mg
IF 6.2 2区 材料科学
Journal of Alloys and Compounds Pub Date : 2024-12-21 DOI: 10.1016/j.jallcom.2024.178213
Lubin Song, Lv Zhao, Yaxin Zhu, Shuang Liang, Minsheng Huang, Zhenhuan Li
{"title":"Uncovering the role of hierarchical and heterogeneous structures on strength anisotropy and strain localization of laser power bed fusion AlSi10Mg","authors":"Lubin Song, Lv Zhao, Yaxin Zhu, Shuang Liang, Minsheng Huang, Zhenhuan Li","doi":"10.1016/j.jallcom.2024.178213","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178213","url":null,"abstract":"Hierarchical and heterogeneous microstructure covers a vague veil on deformation mechanisms and origins of mechanical anisotropy of laser powder bed fusion (LPBF) AlSi10Mg. The present work is devoted to unveil the correlation between microstructure features and mechanical behaviors via high fidelity melt pool models and crystal plasticity finite element simulations. Following careful validation with experimental results, dedicated simulations were conducted to assess the effects of Si-rich network, melt pool border and polycrystalline structures on the mechanical properties, with a particular focus on strength anisotropy and strain localization. The results show that the elongated Si-rich network plays a critical role in strength anisotropy, whereas the melt pool border and grain structure exhibit a negligible influence. Although the softer melt pool border promotes strain localization, its softening effect on global strength is found to be weakened due to deformation compatibility induced constraints, promoting an enhanced strength of this region. Additionally, it is demonstrated that appropriate grain orientation distribution perpendicular to the building direction can effectively reduce the strength anisotropy, without affecting the strain localization level. These findings offer new insights into the microstructure optimization of LPBF aluminum alloys, aiming to achieve mechanical isotropy.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"113 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unraveling the Ion-Accumulation-Induced Potential Limitations of MXene-Based Supercapacitors
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-12-21 DOI: 10.1021/acsenergylett.4c03296
Yanting Xie, Haitao Zhang, Yuanxiao Qu, Xinglin Jiang, Junfeng Huang, Xiong Zhang, Yuyu Gao, Liang Tang, Qiang Lv, Xingxing Jiao, Weiqing Yang, Zhengyou He
{"title":"Unraveling the Ion-Accumulation-Induced Potential Limitations of MXene-Based Supercapacitors","authors":"Yanting Xie, Haitao Zhang, Yuanxiao Qu, Xinglin Jiang, Junfeng Huang, Xiong Zhang, Yuyu Gao, Liang Tang, Qiang Lv, Xingxing Jiao, Weiqing Yang, Zhengyou He","doi":"10.1021/acsenergylett.4c03296","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c03296","url":null,"abstract":"MXenes are rising star materials for electrochemical energy storage, but their low potential window severely constrains their high-energy-density potential. When subjected to a high potential window, MXenes undergo an irreversible oxidative failure. However, the mechanisms behind this failure are not well understood. Here, we disclose a previously unreported ion-accumulation mechanism that limits the high operating potential of MXenes. Under excessive polarization at high potential, the representative MXene, Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>, shows oxidation behavior but a reversible electrochemical response. Spectroscopic analyses and electrochemical kinetic field simulations disclose the conformational state variation, ion flux distribution, and vertical displacement behavior of MXene electrodes, confirming that electrolyte ions predominantly accumulate at the edges of overly thick stacked MXenes, with only a limited number shuttling freely into the interior. To address this potential-limiting ion-accumulation mechanism, we develop a transferring–engraving method to build free ion-shuttling ultrathin MXenes that guarantees a 100% increase in the potential window and a high volumetric energy density of 45.7 mWh cm<sup>–3</sup>.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"201 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of the interaction between recrystallization and precipitation on the heterogeneous microstructure and tensile properties in a heavily cold–rolled Al0.3CoCrFeNi high–entropy alloy
IF 6.2 2区 材料科学
Journal of Alloys and Compounds Pub Date : 2024-12-21 DOI: 10.1016/j.jallcom.2024.178241
Kang Zhang, Yue Liu, Lili Wu, Ning Zhang, Lei Li, Lu Zhang, Haile Yan, Peter Hodgson, Minghui Cai
{"title":"The effect of the interaction between recrystallization and precipitation on the heterogeneous microstructure and tensile properties in a heavily cold–rolled Al0.3CoCrFeNi high–entropy alloy","authors":"Kang Zhang, Yue Liu, Lili Wu, Ning Zhang, Lei Li, Lu Zhang, Haile Yan, Peter Hodgson, Minghui Cai","doi":"10.1016/j.jallcom.2024.178241","DOIUrl":"https://doi.org/10.1016/j.jallcom.2024.178241","url":null,"abstract":"The present paper focuses on the recrystallization and multiple precipitation behaviors of a heavily cold–rolled Al<sub>0.3</sub>CoCrFeNi high–entropy alloy after annealing at temperatures from 700 and 850 °C. Three types of B2 precipitates with different morphologies and sizes form concurrently in the different regions of the microstructure. Post–annealing was also found to increase the fraction of Ʃ3 twin boundaries, which not only refines the austenite, but also facilitates the nucleation for B2 precipitates. The interaction among twins, precipitation and recrystallization plays a crucial role in the formation of the heterogeneous microstructure. As the annealing temperature increases, the yield strength of the alloy decreases while improving the ductility to some extent. Notably, when annealed at 750 °C for 1<!-- --> <!-- -->h, the alloy demonstrated an optimal balance, exhibiting a yield strength of approximately 1040<!-- --> <!-- -->MPa and ductility of about 22%. The heterogeneous microstructure triggered multiple strengthening mechanisms, and thus exerts an important effect on the overall tensile properties, along with dislocation slip and twinning–induced plasticity (TWIP) effect.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"24 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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