Pub Date : 2024-12-12DOI: 10.1016/j.jmat.2024.100989
Rongan He , Difa Xu , Mahmoud Sayed
In this insight, we highlighted the emergence of a plasmonic response over ZnO/CuInS2 S-scheme heterojunction, which has been recently reported by Meng et al. (Adv. Mater. 2024, 36, 2406460). The surface plasmon resonance (SPR) effect is widely acknowledged in plasmonic metal nanoparticles or defective nanocrystals. In their work, Meng et al. proposed another approach to generate a plasmonic response in S-scheme heterojunction photocatalysts. By virtue of the SPR effect, the obtained ZnO/CuInS2 photocatalyst exhibited supreme photocatalytic activity for H2O2 production under near-infrared (NIR) light. This heterojunction-induced plasmonic response is mainly concentrated in the IR regime thus extending the photocatalytic activity beyond the visible light limit and opening new avenues for boosting the development of heterojunctions in artificial photosynthesis.
{"title":"S-scheme heterojunction-induced surface plasmon response","authors":"Rongan He , Difa Xu , Mahmoud Sayed","doi":"10.1016/j.jmat.2024.100989","DOIUrl":"10.1016/j.jmat.2024.100989","url":null,"abstract":"<div><div>In this insight, we highlighted the emergence of a plasmonic response over ZnO/CuInS<sub>2</sub> S-scheme heterojunction, which has been recently reported by Meng <em>et al</em>. (Adv. Mater. 2024, 36, 2406460). The surface plasmon resonance (SPR) effect is widely acknowledged in plasmonic metal nanoparticles or defective nanocrystals. In their work, Meng <em>et al</em>. proposed another approach to generate a plasmonic response in S-scheme heterojunction photocatalysts. By virtue of the SPR effect, the obtained ZnO/CuInS<sub>2</sub> photocatalyst exhibited supreme photocatalytic activity for H<sub>2</sub>O<sub>2</sub> production under near-infrared (NIR) light. This heterojunction-induced plasmonic response is mainly concentrated in the IR regime thus extending the photocatalytic activity beyond the visible light limit and opening new avenues for boosting the development of heterojunctions in artificial photosynthesis.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100989"},"PeriodicalIF":8.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-09DOI: 10.1016/j.jmat.2024.100987
Qi Zhou , Kaijia Zhang , Yaorong Su , Xinhe Wu , Tengyuan Gao , Guohong Wang
Constructing S-scheme heterojunction between TiO2 and other reduction semiconductors can effectively enhance the intrinsically low carrier separation efficiency and increase the reduction ability of single TiO2 photocatalyst. In this work, a hydrothermally synthesized 2D CaIn2S4 nanosheets, possessing the merits of narrow bandgap and strong reduction ability, have been developed to construct S-scheme heterojunction with TiO2 nanofiber. It is found that the 2D CaIn2S4 nanosheets can be in-situ assembled onto the surface of 1D TiO2 nanofiber to form a 2D/1D CaIn2S4/TiO2 S-scheme heterojunction, which then presents an extremely reinforced H2-evolution rate (ca. 564.66 μmol·g−1·h−1), about 3- and 7-fold higher than that of the single TiO2 and CaIn2S4, respectively. Finally, the in-situ XPS, DFT calculations, steady and transient-state spectrum results indicate that the formation of S-scheme heterojunctions between CaIn2S4 and TiO2. This work may deliver a novel and insightful inspiration for the development of high-efficiency S-scheme heterojunction photocatalysts.
{"title":"2D/1D CaIn2S4/TiO2 S-scheme heterojunction: In-situ hydrothermal synthesis and enhanced photocatalytic H2 evolution","authors":"Qi Zhou , Kaijia Zhang , Yaorong Su , Xinhe Wu , Tengyuan Gao , Guohong Wang","doi":"10.1016/j.jmat.2024.100987","DOIUrl":"10.1016/j.jmat.2024.100987","url":null,"abstract":"<div><div>Constructing S-scheme heterojunction between TiO<sub>2</sub> and other reduction semiconductors can effectively enhance the intrinsically low carrier separation efficiency and increase the reduction ability of single TiO<sub>2</sub> photocatalyst. In this work, a hydrothermally synthesized 2D CaIn<sub>2</sub>S<sub>4</sub> nanosheets, possessing the merits of narrow bandgap and strong reduction ability, have been developed to construct S-scheme heterojunction with TiO<sub>2</sub> nanofiber. It is found that the 2D CaIn<sub>2</sub>S<sub>4</sub> nanosheets can be <em>in-situ</em> assembled onto the surface of 1D TiO<sub>2</sub> nanofiber to form a 2D/1D CaIn<sub>2</sub>S<sub>4</sub>/TiO<sub>2</sub> S-scheme heterojunction, which then presents an extremely reinforced H<sub>2</sub>-evolution rate (ca. 564.66 μmol·g<sup>−1</sup>·h<sup>−1</sup>), about 3- and 7-fold higher than that of the single TiO<sub>2</sub> and CaIn<sub>2</sub>S<sub>4</sub>, respectively. Finally, the <em>in-situ</em> XPS, DFT calculations, steady and transient-state spectrum results indicate that the formation of S-scheme heterojunctions between CaIn<sub>2</sub>S<sub>4</sub> and TiO<sub>2</sub>. This work may deliver a novel and insightful inspiration for the development of high-efficiency S-scheme heterojunction photocatalysts.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100987"},"PeriodicalIF":8.4,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As an eco-friendly oxidant, hydrogen peroxide (H2O2) has been extensively applied in many fields, such as chemical synthesis, waste water purification, medical sterilization, paper manufacture and so on. H2O2 production also suffers from various shortcomings, including bad stability and low yield. Because of the extraordinary catalytic activity of H2O2 photocatalysis and electrocatalysis, single atom catalysts (SACs) have received considerable attention in recent years. With SACs' distinct benefits, SACs holds a significant place in the production of H2O2. It is extensively applicable to diverse reaction pathways, such as photocatalysis and electrocatalysis, which offer novel insights and a wide range of possibilities for the effective and environmentally friendly synthesis of H2O2. Appropriately reviewing and summarizing the previous and current findings is essential to advancing the study's depth. Therefore, this review emphasizes the recent progress of SACs employed for photocatalytic and electrocatalytic production of H2O2. It first presents the mechanism and benefits of SACs in the catalytic production of H2O2. Next, based on the various benefits that SACs embody in the catalytic production of H2O2, an overview of SACs systems for H2O2 production is provided, with a focus on the modulation of adsorption capacity by SACs and the inhibition of side reactions. Lastly, some difficulties of photocatalytic and electrocatalytic production of H2O2 by SACs are depicted, and future directions of development are envisioned.
{"title":"Single-atom catalysts in the catalytic production of H2O2","authors":"Zhiqi Li , Zhihan Yu , Chen Guan , Kaiqiang Xu , Quanjun Xiang","doi":"10.1016/j.jmat.2024.100982","DOIUrl":"10.1016/j.jmat.2024.100982","url":null,"abstract":"<div><div>As an eco-friendly oxidant, hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) has been extensively applied in many fields, such as chemical synthesis, waste water purification, medical sterilization, paper manufacture and so on. H<sub>2</sub>O<sub>2</sub> production also suffers from various shortcomings, including bad stability and low yield. Because of the extraordinary catalytic activity of H<sub>2</sub>O<sub>2</sub> photocatalysis and electrocatalysis, single atom catalysts (SACs) have received considerable attention in recent years. With SACs' distinct benefits, SACs holds a significant place in the production of H<sub>2</sub>O<sub>2</sub>. It is extensively applicable to diverse reaction pathways, such as photocatalysis and electrocatalysis, which offer novel insights and a wide range of possibilities for the effective and environmentally friendly synthesis of H<sub>2</sub>O<sub>2</sub>. Appropriately reviewing and summarizing the previous and current findings is essential to advancing the study's depth. Therefore, this review emphasizes the recent progress of SACs employed for photocatalytic and electrocatalytic production of H<sub>2</sub>O<sub>2</sub>. It first presents the mechanism and benefits of SACs in the catalytic production of H<sub>2</sub>O<sub>2</sub>. Next, based on the various benefits that SACs embody in the catalytic production of H<sub>2</sub>O<sub>2</sub>, an overview of SACs systems for H<sub>2</sub>O<sub>2</sub> production is provided, with a focus on the modulation of adsorption capacity by SACs and the inhibition of side reactions. Lastly, some difficulties of photocatalytic and electrocatalytic production of H<sub>2</sub>O<sub>2</sub> by SACs are depicted, and future directions of development are envisioned.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100982"},"PeriodicalIF":8.4,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-06DOI: 10.1016/j.jmat.2024.100988
Chengwan Yang , Kewei Li , Mengen Hu , Xinyang Li , Ming Li , Xiaoye Hu , Yue Li , Zhulin Huang , Guowen Meng
Carbon-based materials, renowned for their low density, adjustable electrical conductivity, superior corrosion resistance and mechanical properties, and have found extensive applications in the field of electromagnetic wave absorption (EMWA). Despite their merits, the current EMWA and thermal insulation capabilities are not fully optimized, thereby restricting their applications in the aerospace sector. Herein, we introduce a combinatory methodology employing electrospinning followed by pyrolysis to in-situ integrate ZrO2 and ZrB2 nanoparticles onto the surface of carbon nanofibers, culminating in a flexible ZrO2/ZrB2/C nanofiber felt. The integration of ZrO2 and ZrB2 nanoparticles significantly augments impedance matching and promotes multifaceted scattering and interfacial polarization. Consequently, the ZrO2/ZrB2/C nanofiber felt demonstrates a minimum reflection loss (RLmin) of −54 dB and the effective absorption bandwidth (EAB, RL ≤ −10 dB) is 3.1 GHz. Moreover, the three-dimensional porous architecture and the presence of multiple heterogeneous interfaces endow the ZrO2/ZrB2/C nanofiber felt with an ultralow thermal conductivity of 0.016 W⸱m−1⸱K−1 at 1100 °C, underscoring its exceptional potential for infrared stealth. This work shows considerable guiding significance for the design of bi-functional EMWA materials with ultralow thermal conductivity in aerospace field.
{"title":"Flexible ZrO2/ZrB2/C nanofiber felt with enhanced microwave absorption and ultralow thermal conductivity","authors":"Chengwan Yang , Kewei Li , Mengen Hu , Xinyang Li , Ming Li , Xiaoye Hu , Yue Li , Zhulin Huang , Guowen Meng","doi":"10.1016/j.jmat.2024.100988","DOIUrl":"10.1016/j.jmat.2024.100988","url":null,"abstract":"<div><div>Carbon-based materials, renowned for their low density, adjustable electrical conductivity, superior corrosion resistance and mechanical properties, and have found extensive applications in the field of electromagnetic wave absorption (EMWA). Despite their merits, the current EMWA and thermal insulation capabilities are not fully optimized, thereby restricting their applications in the aerospace sector. Herein, we introduce a combinatory methodology employing electrospinning followed by pyrolysis to <em>in-situ</em> integrate ZrO<sub>2</sub> and ZrB<sub>2</sub> nanoparticles onto the surface of carbon nanofibers, culminating in a flexible ZrO<sub>2</sub>/ZrB<sub>2</sub>/C nanofiber felt. The integration of ZrO<sub>2</sub> and ZrB<sub>2</sub> nanoparticles significantly augments impedance matching and promotes multifaceted scattering and interfacial polarization. Consequently, the ZrO<sub>2</sub>/ZrB<sub>2</sub>/C nanofiber felt demonstrates a minimum reflection loss (RL<sub>min</sub>) of −54 dB and the effective absorption bandwidth (EAB, RL ≤ −10 dB) is 3.1 GHz. Moreover, the three-dimensional porous architecture and the presence of multiple heterogeneous interfaces endow the ZrO<sub>2</sub>/ZrB<sub>2</sub>/C nanofiber felt with an ultralow thermal conductivity of 0.016 W⸱m<sup>−1</sup>⸱K<sup>−1</sup> at 1100 °C, underscoring its exceptional potential for infrared stealth. This work shows considerable guiding significance for the design of bi-functional EMWA materials with ultralow thermal conductivity in aerospace field.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100988"},"PeriodicalIF":8.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-05DOI: 10.1016/j.jmat.2024.100985
Yong Zhang , Youjun Wang , Yuchen Liu , Shumin Zhang , Yanyan Zhao , Jianjun Zhang
Photocatalytic H2O2 production from O2 and H2O is an economical and environmentally sustainable approach. However, the reliance on sacrificial agents and pure O2 greatly limits the practical application of numerous photocatalysts. Herein, a novel S-scheme photocatalyst composed of MgIn2S4 and covalent organic framework (COF) was developed toward efficient photocatalytic H2O2 evolution under pure water and air. MgIn2S4/COF (MC) S-scheme heterojunction was constructed by decorating MgIn2S4 nanosheets on hollow spherical COF using wet chemistry. The H2O2 yield of the optimal MC composite in pure water and air was 4.52 mmol⸱g−1⸱h−1 under pure water and air, which was separately 6.6 times and 9.4 times higher than that of pristine MgIn2S4 and COF. Photocatalytic mechanism characterizations confirmed that the continuous 2e− O2 reduction and 4e− H2O oxidation simultaneously occurred within this reaction system, and both ·O2− and e– were pivotal intermediates for H2O2 evolution. The MC S-scheme heterojunction was advantageous to the effective separation and transfer of photogenerated electrons and holes, thereby enhancing the photocatalytic H2O2 production activity. This work offers important guidance for constructing high-efficiency COFs-based S-scheme heterojunction for H2O2 production.
{"title":"MgIn2S4/COF S-scheme heterostructure for improved photocatalytic H2O2 production under pure water and air","authors":"Yong Zhang , Youjun Wang , Yuchen Liu , Shumin Zhang , Yanyan Zhao , Jianjun Zhang","doi":"10.1016/j.jmat.2024.100985","DOIUrl":"10.1016/j.jmat.2024.100985","url":null,"abstract":"<div><div>Photocatalytic H<sub>2</sub>O<sub>2</sub> production from O<sub>2</sub> and H<sub>2</sub>O is an economical and environmentally sustainable approach. However, the reliance on sacrificial agents and pure O<sub>2</sub> greatly limits the practical application of numerous photocatalysts. Herein, a novel S-scheme photocatalyst composed of MgIn<sub>2</sub>S<sub>4</sub> and covalent organic framework (COF) was developed toward efficient photocatalytic H<sub>2</sub>O<sub>2</sub> evolution under pure water and air. MgIn<sub>2</sub>S<sub>4</sub>/COF (MC) S-scheme heterojunction was constructed by decorating MgIn<sub>2</sub>S<sub>4</sub> nanosheets on hollow spherical COF using wet chemistry. The H<sub>2</sub>O<sub>2</sub> yield of the optimal MC composite in pure water and air was 4.52 mmol⸱g<sup>−1</sup>⸱h<sup>−1</sup> under pure water and air, which was separately 6.6 times and 9.4 times higher than that of pristine MgIn<sub>2</sub>S<sub>4</sub> and COF. Photocatalytic mechanism characterizations confirmed that the continuous 2e<sup>−</sup> O<sub>2</sub> reduction and 4e<sup>−</sup> H<sub>2</sub>O oxidation simultaneously occurred within this reaction system, and both ·O<sub>2</sub><sup>−</sup> and e<sup>–</sup> were pivotal intermediates for H<sub>2</sub>O<sub>2</sub> evolution. The MC S-scheme heterojunction was advantageous to the effective separation and transfer of photogenerated electrons and holes, thereby enhancing the photocatalytic H<sub>2</sub>O<sub>2</sub> production activity. This work offers important guidance for constructing high-efficiency COFs-based S-scheme heterojunction for H<sub>2</sub>O<sub>2</sub> production.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100985"},"PeriodicalIF":8.4,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-04DOI: 10.1016/j.jmat.2024.100986
Wenli Zhang , Jing Wang , Tiantian Zhang , Bin Shao , Xu Zuo
Proximity-induced magnetic exchange interactions offer a novel approach to manipulate the valley degree of freedom (DOF) in nonmagnetic monolayers without external magnetic fields. Transition metal dichalcogenides (TMDs) serve as an ideal platform for valleytronics research. Here, by introducing a two-dimensional (2D) magnetic substrate, chromium germanium telluride (CrGeTe3), we demonstrate effective control over the spin and valley properties of CrGeTe3/MTe2 (M = Mo, W) van der Waals (vdW) heterostructures. Our first-principles calculations and model Hamiltonian analysis reveal that the magnetic proximity effect (MPE) induces valley splitting and polarization in monolayer MoTe2 and WTe2 through the synergistic action of spin-orbit coupling (SOC) and proximity exchange interactions. Further investigation shows that valley splitting in these heterostructures is highly sensitive to the overlap between the atomic projection positions of TMDs and the magnetic Cr atoms, and can be continuously adjusted by varying the magnetization of CrGeTe3. Additionally, normal strain and experimentally accessible electric fields can effectively modulate the proximity exchange coupling, thus enabling extensive tunability of valley splitting. These controllable manipulations of the valley DOF through external stimuli mark a significant advancement in valleytronics, paving the way for next-generation electronic devices with enhanced performance and novel functionalities.
{"title":"Magnetic proximity effect and tunable valley splitting in 2D CrGeTe3/MTe2 (M = Mo, W) van der Waals heterostructures","authors":"Wenli Zhang , Jing Wang , Tiantian Zhang , Bin Shao , Xu Zuo","doi":"10.1016/j.jmat.2024.100986","DOIUrl":"10.1016/j.jmat.2024.100986","url":null,"abstract":"<div><div>Proximity-induced magnetic exchange interactions offer a novel approach to manipulate the valley degree of freedom (DOF) in nonmagnetic monolayers without external magnetic fields. Transition metal dichalcogenides (TMDs) serve as an ideal platform for valleytronics research. Here, by introducing a two-dimensional (2D) magnetic substrate, chromium germanium telluride (CrGeTe<sub>3</sub>), we demonstrate effective control over the spin and valley properties of CrGeTe<sub>3</sub>/MTe<sub>2</sub> (M = Mo, W) van der Waals (vdW) heterostructures. Our first-principles calculations and <span><math><mrow><mi>k</mi><mo>∙</mo><mi>p</mi></mrow></math></span> model Hamiltonian analysis reveal that the magnetic proximity effect (MPE) induces valley splitting and polarization in monolayer MoTe<sub>2</sub> and WTe<sub>2</sub> through the synergistic action of spin-orbit coupling (SOC) and proximity exchange interactions. Further investigation shows that valley splitting in these heterostructures is highly sensitive to the overlap between the atomic projection positions of TMDs and the magnetic Cr atoms, and can be continuously adjusted by varying the magnetization of CrGeTe<sub>3</sub>. Additionally, normal strain and experimentally accessible electric fields can effectively modulate the proximity exchange coupling, thus enabling extensive tunability of valley splitting. These controllable manipulations of the valley DOF through external stimuli mark a significant advancement in valleytronics, paving the way for next-generation electronic devices with enhanced performance and novel functionalities.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100986"},"PeriodicalIF":8.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142763446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-30DOI: 10.1016/j.jmat.2024.100980
Jamal Belhadi, Zouhair Hanani, Nick A. Shepelin, Urška Trstenjak, Nina Daneu, Arnold M. Müller, Christof Vockenhuber, Bojan Ambrožič, Vid Bobnar, Gertjan Koster, Mimoun El Marssi, Thomas Lippert, Matjaž Spreitzer
Ensuring reliable and safe operation of high-power electronic devices necessitates the development of high-quality dielectric nano-capacitors with high recoverable energy density (URec) and efficiency (η) at low applied electric fields (E)/voltages. In this work, we demonstrate ultra-high URec and η at low E <500 kV/cm in as-grown epitaxial relaxor ferroelectric (RFE) PMN-33PT films, rivaling those typically achieved in state-of-the-art RFE and antiferroelectric (AFE) materials. The high energy storage properties were achieved using a synergistic strategy involving large polarization, a giant built-in potential/imprint (five times higher than the coercive field), and AFE like behavior. The structural, chemical, and electrical investigations revealed that these achievements mainly arise from the effects of strain, dipole defects, and chemical composition. For instance, at low E, the capacitors exhibit under 160 kV/cm (i.e., 8V) and 400 kV/cm (i.e., 20V), respectively, an ultra- high ΔP (45 μC/cm2 and 60 μC/cm2), UE= URec /E (21 J⸱MV/cm2 and 17 J⸱MV/cm2), and UF=URec/(1–η) (20 J/cm3 and 47 J/cm3) with a robust charge-discharge fatigue endurance and outstanding frequency and thermal stability. Additionally, the designed films exhibit outstanding energy storage performance at higher E up to 2 MV/cm (ΔP ≈ 78 μC/cm2, UE≈ 17.3 J⸱MV/cm2 and UF≈ 288 J/cm3) due to their low leakage current density.
{"title":"Ultra-high energy storage density and efficiency at low electric fields/voltages in dielectric thin film capacitors through synergistic effects","authors":"Jamal Belhadi, Zouhair Hanani, Nick A. Shepelin, Urška Trstenjak, Nina Daneu, Arnold M. Müller, Christof Vockenhuber, Bojan Ambrožič, Vid Bobnar, Gertjan Koster, Mimoun El Marssi, Thomas Lippert, Matjaž Spreitzer","doi":"10.1016/j.jmat.2024.100980","DOIUrl":"https://doi.org/10.1016/j.jmat.2024.100980","url":null,"abstract":"Ensuring reliable and safe operation of high-power electronic devices necessitates the development of high-quality dielectric nano-capacitors with high recoverable energy density (<em>U</em><sub>Rec</sub>) and efficiency (<em>η</em>) at low applied electric fields (<em>E</em>)/voltages. In this work, we demonstrate ultra-high <em>U</em><sub>Rec</sub> and η at low <em>E</em> <500 kV/cm in as-grown epitaxial relaxor ferroelectric (RFE) PMN-33PT films, rivaling those typically achieved in state-of-the-art RFE and antiferroelectric (AFE) materials. The high energy storage properties were achieved using a synergistic strategy involving large polarization, a giant built-in potential/imprint (five times higher than the coercive field), and AFE like behavior. The structural, chemical, and electrical investigations revealed that these achievements mainly arise from the effects of strain, dipole defects, and chemical composition. For instance, at low E, the capacitors exhibit under 160 kV/cm (<em>i.e.</em>, 8V) and 400 kV/cm (<em>i.e.</em>, 20V), respectively, an ultra- high Δ<em>P</em> (45 μC/cm<sup>2</sup> and 60 μC/cm<sup>2</sup>), <em>U</em><sub>E</sub>= <em>U</em><sub>Rec</sub> /<em>E</em> (21 J⸱MV/cm<sup>2</sup> and 17 J⸱MV/cm<sup>2</sup>), and <em>U</em><sub>F</sub>=<em>U</em><sub>Rec</sub>/(1–η) (20 J/cm<sup>3</sup> and 47 J/cm<sup>3</sup>) with a robust charge-discharge fatigue endurance and outstanding frequency and thermal stability. Additionally, the designed films exhibit outstanding energy storage performance at higher <em>E</em> up to 2 MV/cm (Δ<em>P</em> ≈ 78 μC/cm<sup>2</sup>, <em>U</em><sub>E</sub>≈ 17.3 J⸱MV/cm<sup>2</sup> and <em>U</em><sub>F</sub>≈ 288 J/cm<sup>3</sup>) due to their low leakage current density.","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"76 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756331","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}
Pub Date : 2024-11-30DOI: 10.1016/j.jmat.2024.100983
Yuanyuan Ma , Ke Ping , Peng Sun , Kaibin Lin , Junjie Guo , Lu Yue , Wenhui Zhang , Xiangwei Wu , Zhaoyin Wen
The design of electrode material nanostructures including reducing material sizes and designing appropriate heterostructures, has great potential in improving charge storage dynamics and enhancing practical performance. In this study, we present the innovative synthesis of SnO2SnS2/graphene heterojunction composite materials via a controlled vulcanization reaction process. The unique structure endows the composite with high electronic conductivity, rapid ion diffusion rates, elevated electrochemical activity, excellent structural stability, and abundant reaction sites, making it a highly efficient anode material for sodium-ion batteries (SIBs). Half-cell tests demonstrate that the SnO2SnS2/r–G composite achieves a first Coulombic efficiency of 77.3% at a high current density of 5 A/g, showing remarkable cycling stability. Remarkably, the composite retains a reversible capacity of 330 mA⋅h/g after 1000 cycles, with a capacity retention rate of 77.5%. Moreover, we elucidate the specific sodium storage mechanisms of the heterojunction composite electrode via in-situ and ex-situ characterization methods. Furthermore, a full battery utilizing Na0.53MnO2 as the cathode and SnO2SnS2/r–G composite as the anode exhibits outstanding rate performance and long-term cycling stability. This method of heterostructure design and fabrication, coupled with the exceptional performance metrics, suggests that the SnO2SnS2/r–G heterostructure is a promising candidate for advanced anode materials in SIBs applications.
电极材料纳米结构的设计包括减小材料尺寸和设计合适的异质结构，在改善电荷存储动力学和提高实用性能方面具有很大的潜力。在这项研究中，我们提出了通过控制硫化反应过程合成SnO2-SnS2/石墨烯异质结复合材料的创新方法。独特的结构使该复合材料具有高电子导电性、离子扩散速度快、电化学活性高、结构稳定性好、反应位点丰富等特点，是一种高效的钠离子电池负极材料。半电池测试表明，SnO2-SnS2 / r-G复合材料在5 a /g的高电流密度下，第一库仑效率达到77.3%，具有显著的循环稳定性。值得注意的是，该复合材料在1000次循环后仍保持330 mA·h/g的可逆容量，容量保持率为77.5%。此外，我们通过原位和非原位表征方法阐明了异质结复合电极的特定钠储存机制。此外，以Na0.53MnO2为阴极，SnO2-SnS2 / r-G复合材料为阳极的全电池具有出色的倍率性能和长期循环稳定性。这种异质结构设计和制造方法，加上优异的性能指标，表明SnO2-SnS2 / r-G异质结构是sib应用中先进阳极材料的有希望的候选材料。
{"title":"SnO2SnS2/graphene heterojunction composite promotes high-performance sodium ion storage","authors":"Yuanyuan Ma , Ke Ping , Peng Sun , Kaibin Lin , Junjie Guo , Lu Yue , Wenhui Zhang , Xiangwei Wu , Zhaoyin Wen","doi":"10.1016/j.jmat.2024.100983","DOIUrl":"10.1016/j.jmat.2024.100983","url":null,"abstract":"<div><div>The design of electrode material nanostructures including reducing material sizes and designing appropriate heterostructures, has great potential in improving charge storage dynamics and enhancing practical performance. In this study, we present the innovative synthesis of SnO<sub>2</sub><img>SnS<sub>2</sub>/graphene heterojunction composite materials <em>via</em> a controlled vulcanization reaction process. The unique structure endows the composite with high electronic conductivity, rapid ion diffusion rates, elevated electrochemical activity, excellent structural stability, and abundant reaction sites, making it a highly efficient anode material for sodium-ion batteries (SIBs). Half-cell tests demonstrate that the SnO<sub>2</sub><img>SnS<sub>2</sub>/r–G composite achieves a first Coulombic efficiency of 77.3% at a high current density of 5 A/g, showing remarkable cycling stability. Remarkably, the composite retains a reversible capacity of 330 mA⋅h/g after 1000 cycles, with a capacity retention rate of 77.5%. Moreover, we elucidate the specific sodium storage mechanisms of the heterojunction composite electrode <em>via in-situ</em> and <em>ex-situ</em> characterization methods. Furthermore, a full battery utilizing Na<sub>0.53</sub>MnO<sub>2</sub> as the cathode and SnO<sub>2</sub><img>SnS<sub>2</sub>/r–G composite as the anode exhibits outstanding rate performance and long-term cycling stability. This method of heterostructure design and fabrication, coupled with the exceptional performance metrics, suggests that the SnO<sub>2</sub><img>SnS<sub>2</sub>/r–G heterostructure is a promising candidate for advanced anode materials in SIBs applications.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100983"},"PeriodicalIF":8.4,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142753025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-29DOI: 10.1016/j.jmat.2024.100979
Dong-Xu Li , Zhipeng Li , Zong-Yang Shen , Xuhai Shi , Xiaojun Zeng , You Zhang , Wenqin Luo , Fusheng Song , Chao-Feng Wu
Dielectric capacitors are independent in advanced electronics and pulse power systems as an energy storage and conversion medium. However, achieving high energy density at a low electric field remains challenging for dielectric materials to improve the safety of integrated electronic devices. In this work, the strategy of defect engineering-induced phase competition is proposed to improve the polarization behavior and strengthen dielectric temperature stability of (Bi,Na)TiO3 (BNT)-based relaxor ferroelectric, i.e., Na0.325Sr0.245Ba0.105–1.5x□0.5xBi0.325+xTiO3 (NSB0.105–1.5x□0.5xB0.325+xT) ceramics by changing the ratio of Bi3+/Ba2+. A high recoverable energy density (Wrec = 3.6 J/cm3) is achieved at a relatively low electric field of 160 kV/cm for x = 0.06 composition together with a high dielectric constant of 3142% ± 15% in a wide temperature range of 30–386 °C, which exceeds other lead-free dielectric ceramics at the same electric field. The results demonstrate that NSB0.015□0.03B0.385T ceramics are desirable for advanced pulsed power capacitors and will push the development of defect-tuned functionality of dielectric ceramics for energy storage applications.
{"title":"Defect engineering induced phase competition in BNT-based relaxor ferroelectrics for dielectric energy storage","authors":"Dong-Xu Li , Zhipeng Li , Zong-Yang Shen , Xuhai Shi , Xiaojun Zeng , You Zhang , Wenqin Luo , Fusheng Song , Chao-Feng Wu","doi":"10.1016/j.jmat.2024.100979","DOIUrl":"10.1016/j.jmat.2024.100979","url":null,"abstract":"<div><div>Dielectric capacitors are independent in advanced electronics and pulse power systems as an energy storage and conversion medium. However, achieving high energy density at a low electric field remains challenging for dielectric materials to improve the safety of integrated electronic devices. In this work, the strategy of defect engineering-induced phase competition is proposed to improve the polarization behavior and strengthen dielectric temperature stability of (Bi,Na)TiO<sub>3</sub> (BNT)-based relaxor ferroelectric, <em>i.e.</em>, Na<sub>0.325</sub>Sr<sub>0.245</sub>Ba<sub>0.105–1.5<em>x</em></sub>□<sub>0.5<em>x</em></sub>Bi<sub>0.325+<em>x</em></sub>TiO<sub>3</sub> (NSB<sub>0.105–1.5<em>x</em></sub>□<sub>0.5<em>x</em></sub>B<sub>0.325+<em>x</em></sub>T) ceramics by changing the ratio of Bi<sup>3+</sup>/Ba<sup>2+</sup>. A high recoverable energy density (<em>W</em><sub>rec</sub> = 3.6 J/cm<sup>3</sup>) is achieved at a relatively low electric field of 160 kV/cm for <em>x</em> = 0.06 composition together with a high dielectric constant of 3142% ± 15% in a wide temperature range of 30–386 °C, which exceeds other lead-free dielectric ceramics at the same electric field. The results demonstrate that NSB<sub>0.015</sub>□<sub>0.03</sub>B<sub>0.385</sub>T ceramics are desirable for advanced pulsed power capacitors and will push the development of defect-tuned functionality of dielectric ceramics for energy storage applications.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100979"},"PeriodicalIF":8.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-29DOI: 10.1016/j.jmat.2024.100984
Luyang Zhang , Lin Chen , Jiankun Wang , Yuxuan Zhang , Yanhui Chu , Jing Feng
High entropy engineering has been widely used to optimize properties of various materials, and we improve comprehensive performance of rare-earth tantalates RETaO4 (RE is rare earth) by changing configurational entropy in this work. Four medium/high entropy RETaO4 (M/HERT) are successfully prepared, and the variations of disorders and distortion degree of lattices with the increasing configurational entropy are described in detail. It is revealed that M/HERT with the highest configurational entropy does not correspond to the best comprehensive properties. Unexpected variations in properties of M/HERT compared to RETaO4 are observed. By comparing with values obtained from rule of mixture (ROM), it is believed that the cocktail effect exists in M/HERT. The synergistic optimizations of thermo-mechanical properties are realized, including reducing thermal conductivity, increasing thermal expansion coefficients (TECs), and enhancing mechanical properties. M/HERT exhibit excellent high temperature stability and provide a good thermal insulation gradient, which is significant for high-temperature applications of RETaO4. This work serves as an important part for thermal barrier coatings materials with high working temperatures and low thermal conductivity.
{"title":"High entropy engineering boosts thermo-mechanical properties of rare-earth tantalates: Influences of cocktail effects","authors":"Luyang Zhang , Lin Chen , Jiankun Wang , Yuxuan Zhang , Yanhui Chu , Jing Feng","doi":"10.1016/j.jmat.2024.100984","DOIUrl":"10.1016/j.jmat.2024.100984","url":null,"abstract":"<div><div>High entropy engineering has been widely used to optimize properties of various materials, and we improve comprehensive performance of rare-earth tantalates RETaO<sub>4</sub> (RE is rare earth) by changing configurational entropy in this work. Four medium/high entropy RETaO<sub>4</sub> (M/HERT) are successfully prepared, and the variations of disorders and distortion degree of lattices with the increasing configurational entropy are described in detail. It is revealed that M/HERT with the highest configurational entropy does not correspond to the best comprehensive properties. Unexpected variations in properties of M/HERT compared to RETaO<sub>4</sub> are observed. By comparing with values obtained from rule of mixture (ROM), it is believed that the cocktail effect exists in M/HERT. The synergistic optimizations of thermo-mechanical properties are realized, including reducing thermal conductivity, increasing thermal expansion coefficients (TECs), and enhancing mechanical properties. M/HERT exhibit excellent high temperature stability and provide a good thermal insulation gradient, which is significant for high-temperature applications of RETaO<sub>4</sub>. This work serves as an important part for thermal barrier coatings materials with high working temperatures and low thermal conductivity.</div></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 4","pages":"Article 100984"},"PeriodicalIF":8.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142742716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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