eScience最新文献_第5页

Textured CsPbI3 nanorods composite fibers for stable high output piezoelectric energy harvester 用于稳定的高输出压电能量收集器的 CsPbI3 纳米棒纹理复合纤维

IF 42.9

eScience Pub Date : 2024-10-01 DOI: 10.1016/j.esci.2024.100273

Tao Yang , Dengzhou Jia , Bing Xu , Yongfei Hao , Yanglong Hou , Kang Wang , Enhui Wang , Zhentao Du , Sheng Cao , Kuo-Chih Chou , Xinmei Hou

{"title":"Textured CsPbI3 nanorods composite fibers for stable high output piezoelectric energy harvester","authors":"Tao Yang , Dengzhou Jia , Bing Xu , Yongfei Hao , Yanglong Hou , Kang Wang , Enhui Wang , Zhentao Du , Sheng Cao , Kuo-Chih Chou , Xinmei Hou","doi":"10.1016/j.esci.2024.100273","DOIUrl":"10.1016/j.esci.2024.100273","url":null,"abstract":"<div><div>The utilization of piezoelectric nanogenerator (PENG) based on halide perovskite materials has demonstrated significant promise for energy harvesting applications. However, the challenge of synthesizing halide perovskite materials with both high output performance and stability using a straightforward process persists as a substantial obstacle. Herein, we present the fabrication of CsPbI<sub>3</sub> nanorods (NRs) exhibiting highly uniform orientation within polyvinylidene fluoride (PVDF) fibers through a simple texture engineering approach, marking the instance of enhancing PENG performance in this manner. The resultant composite fibers showcase a short-circuit current density (<em>I</em><sub>sc</sub>) of 0.78 μA cm<sup>−2</sup> and an open-circuit voltage (<em>V</em><sub>oc</sub>) of 81 V, representing a 2.5 fold increase compared to the previously reported highest value achieved without the electric poling process. This outstanding output performance is ascribed to the orientation of CsPbI<sub>3</sub> NRs facilitated by texture engineering and dipole poling via the self-polarization effect. Additionally, the PENG exhibits exceptional thermal and water stability, rendering it suitable for deployment in diverse and challenging environmental conditions. Our findings underscore the significant potential of textured CsPbI<sub>3</sub> NRs composite fibers for powering low-power consumer electronics, including commercial LEDs and electronic watches.</div></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 5","pages":"Article 100273"},"PeriodicalIF":42.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabricating ultralight and ultrathin copper current collectors for high-energy batteries 制造用于高能电池的超轻超薄铜集流器

IF 42.9

eScience Pub Date : 2024-10-01 DOI: 10.1016/j.esci.2024.100271

Junxiang Liu, Huanhuan Jia, Dang Nguyen, Jingjing Liu, Chengcheng Fang

{"title":"Fabricating ultralight and ultrathin copper current collectors for high-energy batteries","authors":"Junxiang Liu, Huanhuan Jia, Dang Nguyen, Jingjing Liu, Chengcheng Fang","doi":"10.1016/j.esci.2024.100271","DOIUrl":"10.1016/j.esci.2024.100271","url":null,"abstract":"<div><div>Improving cell-level gravimetric and volumetric energy density is essential to achieve high-performance batteries in the rapidly evolving field of energy storage technology, which requires consideration of all cell components. Traditional current collectors (CCs) made of metal foil, especially the copper (Cu) current collector of the anode, possess high mass and cost yet do not contribute to capacity. Reducing the weight of Cu CC with minimum thickness and desirable mechanical strength is critical in enhancing energy density but is technically challenging. Herein, we demonstrate a fast and scalable chemical coating method based on electroless plating for fabricating ultralight CC (∼1.72 mg cm<sup>−2</sup>) with a thin Cu layer (500 nm) on an ultrathin polyethylene (PE) polymer scaffold (5 μm). The ultralight and ultrathin CC possesses high metal purity, high mechanical strength, high thermal stability, and outstanding electrochemical performances in lithium-ion and lithium-metal battery systems. Our ultralight CC only exhibits ∼30% of the weight of 6 μm Cu foil, leading to a 5−10% improvement in cell-level gravimetric energy density without sacrificing volumetric energy density. Moreover, the simplicity and scalability of the chemical coating method make it a promising solution for the mass production of ultra-thin and lightweight current collectors.</div></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 5","pages":"Article 100271"},"PeriodicalIF":42.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics, materials, and performance of Ru-containing oxide cathode materials for rechargeable batteries 充电电池用含 Ru 氧化物阴极材料的特性、材料和性能

IF 42.9

eScience Pub Date : 2024-10-01 DOI: 10.1016/j.esci.2024.100245

{"title":"Characteristics, materials, and performance of Ru-containing oxide cathode materials for rechargeable batteries","authors":"","doi":"10.1016/j.esci.2024.100245","DOIUrl":"10.1016/j.esci.2024.100245","url":null,"abstract":"<div><div>Li-rich Mn-based cathode materials have attracted extensive attention due to their remarkable energy density contributed by additional anionic redox. However, they always suffer from some undesired problems impeding their further commercialization such as irreversible oxygen loss, transition metal migration, sluggish kinetics and so on. Fortunately, the above issues can be relieved effectively when 3d metal Mn is replaced by 4d metal Ru. We focus on the recent progress of Ru-containing cathode materials and make a detailed summary in this review. At first, we attempt to combine and elucidate the relationship between oxygen and Ru redox. Subsequently, the up-to-date materials of Ru-based cathode materials for Li<sup>+</sup>/Na<sup>+</sup> batteries are concluded systematically. Afterward, the effects of Ru are discussed in depth including enhancing the reversibility of anionic redox and structural stability, modulating the ratio between cationic and anionic redox, improving the kinetics of Li<sup>+</sup>/Na<sup>+</sup>, inhibiting the transition metal migration and so on. More importantly, the future designs of Ru-containing cathode materials are also proposed enlighteningly. We hope this review could offer some new perspectives to comprehend the layered oxides involving anionic redox and provide useful guidelines to achieve better Li<sup>+</sup>/Na<sup>+</sup> rechargeable batteries.</div></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 5","pages":"Article 100245"},"PeriodicalIF":42.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139657769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in flexible self-oscillating actuators 柔性自振荡致动器的最新进展

IF 42.9

eScience Pub Date : 2024-10-01 DOI: 10.1016/j.esci.2024.100250

引用次数: 0

Metal−support interaction in single-atom electrocatalysts: A perspective of metal oxide supports 单原子电催化剂中的金属-支撑相互作用：金属氧化物支持物的视角

IF 42.9

eScience Pub Date : 2024-10-01 DOI: 10.1016/j.esci.2024.100269

引用次数: 0

Understanding synergistic catalysis on Pt–Cu diatomic sites via operando X-ray absorption spectroscopy in sulfur redox reactions 通过 X 射线吸收光谱了解硫氧化还原反应中 Pt-Cu 二原子位点的协同催化作用

IF 42.9

eScience Pub Date : 2024-10-01 DOI: 10.1016/j.esci.2023.100222

{"title":"Understanding synergistic catalysis on Pt–Cu diatomic sites via operando X-ray absorption spectroscopy in sulfur redox reactions","authors":"","doi":"10.1016/j.esci.2023.100222","DOIUrl":"10.1016/j.esci.2023.100222","url":null,"abstract":"<div><div>Sulfur redox reactions render lithium–sulfur (Li–S) batteries with an energy density of > 500 Wh kg<sup>−1</sup> but suffer a low practical capacity and fast capacity fade due to sluggish sulfur redox reaction (SRR) kinetics, which lies in the complex reaction process that involves a series of reaction intermediates and proceeds via a cascade reaction. Here, we present a Pt–Cu dual-atom catalyst (Pt/Cu-NG) as an electrocatalyst for sulfur redox reactions. Pt/Cu-NG enabled the rapid conversion of soluble polysulfide intermediates into insoluble Li<sub>2</sub>S<sub>2</sub>/Li<sub>2</sub>S, and consequently, it prevented the accumulation and shuttling of lithium polysulfides, thus outperforming the corresponding single-atom catalysts (SACs) with individual Pt or Cu sites. <em>Operando</em> X-ray absorption spectroscopy and density functional theory calculations revealed that a synergistic effect between the paired Pt and Cu atoms modifies the electronic structure of the Pt site through d-orbital interactions, resulting in an optimal moderate interaction of the metal atom with the different sulfide species. This optimal interaction enhanced charge transfer kinetics and promoted sulfur redox reactions. Our work thus provides important insights on the atomic scale into the synergistic effects operative in dual-atom catalysts and will thus pave the way to electrocatalysts with enhanced efficiency for high-performance Li–S batteries.</div></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 5","pages":"Article 100222"},"PeriodicalIF":42.9,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138684477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards high performance polyimide cathode materials for lithium–organic batteries by regulating active-site density, accessibility, and reactivity 通过调节活性位密度、可及性和反应性，为锂有机电池开发高性能聚酰亚胺正极材料

IF 42.9

eScience Pub Date : 2024-08-01 DOI: 10.1016/j.esci.2023.100224

{"title":"Towards high performance polyimide cathode materials for lithium–organic batteries by regulating active-site density, accessibility, and reactivity","authors":"","doi":"10.1016/j.esci.2023.100224","DOIUrl":"10.1016/j.esci.2023.100224","url":null,"abstract":"<div><p>Organic carbonyl electrode materials offer promising prospects for future energy storage systems due to their high theoretical capacity, resource sustainability, and structural diversity. Although much progress has been made in the research of high-performance carbonyl electrode materials, systematic and in-depth studies on the underlying factors affecting their electrochemical properties are rather limited. Herein, five polyimides containing different types of diamine linkers are designed and synthesized as cathode materials for Li-ion batteries. First, the incorporation of carbonyl groups increases the active-site density in both conjugated and non-conjugated systems. Second, increased molecular rigidity can improve the accessibility of the active sites. Third, the introduction of the conjugated structure between two carbonyl groups can increase the reactivity of the active sites. Consequently, the incorporation of carbonyl structures and conjugated structures increases the capacity of polyimides. PTN, PAN, PMN, PSN, and PBN exhibit 212, 198, 199, 151, and 115 mAh g<sup>−1</sup> at 50 mA g<sup>−1</sup>, respectively. In addition, the introduction of a carbonyl structure and a conjugated structure is also beneficial for improving cycling stability and rate performance. This work can deepen the understanding of the structure–function relationship for the rational design of polyimide electrode materials and can be extended to the molecular design of other organic cathode materials.</p></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 4","pages":"Article 100224"},"PeriodicalIF":42.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001787/pdfft?md5=1fd0b4448df1e31cee24c3268de351e2&pid=1-s2.0-S2667141723001787-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138576077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable nanostructured electrolyte additives for stable metal anodes 用于稳定金属阳极的可持续纳米结构电解质添加剂

IF 42.9

eScience Pub Date : 2024-08-01 DOI: 10.1016/j.esci.2024.100248

{"title":"Sustainable nanostructured electrolyte additives for stable metal anodes","authors":"","doi":"10.1016/j.esci.2024.100248","DOIUrl":"10.1016/j.esci.2024.100248","url":null,"abstract":"<div><p>Metal anodes (e.g., Li and Zn) are promising candidates for high-energy and high-power rechargeable batteries. However, the commercialization of metal anodes is hampered by irregular dendrite growth, which severely deteriorates the safety and cyclability of metal anodes. Optimizing the electrolyte by nanostructured additives to regulate the metal deposition shows great potential since the electrochemically nonreactive feature endows the regulation function with good sustainability. In this manuscript, the fundamental dendrite formation models and key parameters for stabilizing metal anode are first discussed. The progress and functional mechanism of nanostructured additives for regulating the metal deposition are summarized in terms of regulatory model, i.e., deposition-, adsorption- and dispersion-type. Finally, we also provide a detailed concluding outlook, pointing out the future trend of selecting new nanostructured additive candidates and elucidating synergistic effects and underlying mechanisms with the key attention being given to the assessments of practicality.</p></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 4","pages":"Article 100248"},"PeriodicalIF":42.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141724000272/pdfft?md5=ac13868c758252e2d9f1012e3a2dcf49&pid=1-s2.0-S2667141724000272-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139947162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlating phase transition with heat generation through calorimetric data 通过量热数据将相变与发热相关联

IF 42.9

eScience Pub Date : 2024-08-01 DOI: 10.1016/j.esci.2023.100226

{"title":"Correlating phase transition with heat generation through calorimetric data","authors":"","doi":"10.1016/j.esci.2023.100226","DOIUrl":"10.1016/j.esci.2023.100226","url":null,"abstract":"<div><p>Despite the widespread utilization of Lithium-ion batteries (LIBs), concerns regarding safety during operation persist owing to accidents and potential risks of fires and explosions. To comprehend the thermal dynamics that underlie severe LIB incidents, calorimetry tests have been prevalently employed for over three decades to examine the exothermic/endothermic behavior, reaction kinetics, and thermal interactions among LIB materials. There exists a substantial volume of calorimetry test results on various LIB electrodes, electrolytes, and other components. However, this data showcases low consistency, yielding an unreliable database that obstructs a thorough understanding of LIB thermal behavior. In this research, a comparative analysis of differential scanning calorimetry (DSC) results from materials utilized in the most commercialized LIB systems is conducted. The analysis unveils notable discrepancies in DSC data amassed by different researchers, identifies five predominant causes of data inconsistency, proposes a standardized DSC operational procedure, and generates a set of self-consistent data. Subsequently, an intrinsic safety spectrum is delineated and compared with X-ray diffraction (XRD) outcomes to elucidate the correlation between the crystal lattice structure and the thermal behavior of the material. This work aids in the formation of a comparative DSC database, utilizing the vast but inconsistent literature data. Moreover, it clarifies the linkage between the material structure and thermal behavior, facilitating data-driven thermal analysis of LIBs.</p></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 4","pages":"Article 100226"},"PeriodicalIF":42.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141723001805/pdfft?md5=8e5283f925af58fc47294351614600d0&pid=1-s2.0-S2667141723001805-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139063930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mesoscale interplay among composition heterogeneity, lattice deformation, and redox stratification in single-crystalline layered oxide cathode 单晶层状氧化物阴极中成分异质性、晶格变形和氧化还原分层之间的中尺度相互作用

IF 42.9

eScience Pub Date : 2024-08-01 DOI: 10.1016/j.esci.2024.100251

{"title":"Mesoscale interplay among composition heterogeneity, lattice deformation, and redox stratification in single-crystalline layered oxide cathode","authors":"","doi":"10.1016/j.esci.2024.100251","DOIUrl":"10.1016/j.esci.2024.100251","url":null,"abstract":"<div><p>Single-crystalline layered oxide materials for lithium-ion batteries are featured by their excellent capacity retention over their polycrystalline counterparts, making them sought-after cathode candidates. Their capacity degradation, however, becomes more severe under high-voltage cycling, hindering many high-energy applications. It has long been speculated that the interplay among composition heterogeneity, lattice deformation, and redox stratification could be a driving force for the performance decay. The underlying mechanism, however, is not well-understood. In this study, we use X-ray microscopy to systematically examine single-crystalline NMC particles at the mesoscale. This technique allows us to capture detailed signals of diffraction, spectroscopy, and fluorescence, offering spatially resolved multimodal insights. Focusing on early high-voltage charging cycles, we uncover heterogeneities in valence states and lattice structures that are inherent rather than caused by electrochemical abuse. These heterogeneities are closely associated with compositional variations within individual particles. Our findings provide useful insights for refining material synthesis and processing for enhanced battery longevity and efficiency.</p></div>","PeriodicalId":100489,"journal":{"name":"eScience","volume":"4 4","pages":"Article 100251"},"PeriodicalIF":42.9,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667141724000302/pdfft?md5=22f22b362881440bc7895637938156c9&pid=1-s2.0-S2667141724000302-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0