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Composites of sodium manganese oxides with enhanced electrochemical performance for sodium-ion batteries: Tailoring properties via controlling microstructure

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science China(Technological sciences) 2016年第7期59卷 1042-1047页

作者： HUANG JiaJia LUO Jian Department of Nano Engineering Program of Materials Science and Engineering University of California

Composites of Na_(0.44)Mn O_2, Na_(0.7)Mn O_(2.05), and Na_(0.91) Mn O_2 were synthesized by facile solid-state reaction, ball milling, and annealing methods. Two different composites of identical overall composition but drastically different morphologies and microstructures were synthesized. A composite of a hierarchical porous microstructure with primary and secondary particles(i.e., a "meatball-like" microstructure) achieved an excellent stable capacity of 126 m A h g^(-1) after 100 cycles. The rate capability of the composite could be dramatically enhanced by another round of high-energy ball milling and reannealing; subsequently, a composite that was made up of irregular rods was obtained, for which the capacity was improved by more than 230% to achieve ~53 m A h g^(-1) at a particularly high discharge rate of 50 C. This study demonstrated the feasibility of tailoring the electrochemical performance of electrode materials by simply changing their microstructures via facile ball milling and heat treatments, which can be particularly useful for optimizing composite electrodes for sodium-ion batteries.

关键词： sodium-ion battery cathode material composite electrode microstructure morphology

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Thermo-economic and environmental evaluation of thin film evaporation using novel metal-organic frameworks to enhance solar desalination performance

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Process Safety and Environmental Protection 2025年 199卷

作者： Sharshir, Swellam W. Abdo, Mohamed R. Yusuf, Kareem El-Naggar, Ahmed A. Joseph, Abanob Ismail, M. Elsaid, Ashraf Mimi El-Samadony, M.O.A. Abdelfatah, Mahmoud El-Shaer, Abdelhamid Yuan, Zhanhui College of Materials Engineering Fujian Agriculture and Forestry University Fuzhou350002 China Mechanical Engineering Department Faculty of Engineering Kafrelsheikh University Kafrelsheikh33516 Egypt Department of Physics and Engineering Mathematics Faculty of Engineering University of Kafrelsheikh Kafrelsheikh Egypt Department of Chemistry College of Science King Saud University Riyadh11451 Saudi Arabia Physics Department Faculty of Science Kafrelsheikh University Kafrelsheikh33516 Egypt Nano Science and Technology Program Faculty of Science Kafrelsheikh University Kafrelsheikh33516 Egypt Department of Mechanical Engineering Faculty of Engineering Suez University SuezP.O. Box 43221 Egypt Refrigeration and Air Conditioning Technology Department Faculty of Technology and Education Helwan University CairoP.O. Box 11282 Egypt Mechanical Power Engineering Department Faculty of Engineering Tanta University Tanta City Egypt

The growing shortage of freshwater resources has spurred the development of innovative and sustainable desalination technologies. This study presents a thermo-economic analysis of an innovative hemispherical solar still (HSS) enhanced with a novel Metal-Organic Framework (MOF), specifically Iron-Aluminum Benzene Tricarboxylate. The MOF was characterized through structural, morphological, and optical investigations and integrated into the HSS using two enhancement methods: (I) as a nanofluid (MOF-NF) at a 1 wt% concentration in the feedwater, and (II) as a heat localization material (MOF-HL) by dispersing it on a black cotton wick that spans the basin surface. An external condenser (EC) was added to further enhance condensation in a subsequent configuration. Three identical HSS systems were used for comparative performance evaluation: a baseline unit (CHSS) and two modified systems, one with a condenser and one without. The results indicated that both MOF-based approaches significantly improved the thermal performance and freshwater yield of the HSS. Notably, the MOF-HL configuration outperformed the MOF-NF configuration across all performance metrics. The configuration designated as MOF-HL-EC achieved the highest rate of freshwater production, with a 96.16 % increase in distillate productivity compared to the CHSS. Additionally, this configuration exhibited exergy and energy efficiencies of 3.18 % and 61.1 %, respectively—improvements of 80.85 % and 95.72 % over the traditional system. Economically, the MOF-HL-EC configuration reduced the production cost of distilled water to 0.0115$ per liter, marking a reduction of 25.29 %. © 2025 The Institution of Chemical Engineers

关键词： Iron analysis

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engineering Andreev Bound States for Thermal Sensing in Proximity Josephson Junctions

arXiv

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arXiv 2025年

作者： Jung, Woochan Arnault, Ethan G. Huang, Bevin Park, Jinho Jang, Seong Watanabe, Kenji Taniguchi, Takashi Englund, Dirk Fong, Kin Chung Lee, Gil-Ho Physics Department Pohang University of Science and Technology Pohang37673 Korea Republic of Research Laboratory of Electronics Massachusetts Institute of Technology CambridgeMA02139 United States Intelligence Community Postdoctoral Research Fellowship Program Massachusetts Institute of Technology CambridgeMA02139 United States Department of Mechanical Engineering Columbia University New YorkNY10027 United States Research Center for Functional Materials National Institute for Materials Science Tsukuba Japan International Center for Materials Nanoarchitectonics National Institute for Materials Science Tsukuba Japan Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology CambridgeMA02139 United States Department of Electrical and Computer Engineering Northeastern University BostonMA02115 United States Department of Physics Northeastern University BostonMA02115 United States Quantum Materials and Sensing Institute BurlingtonMA01803 United States

The thermal response of proximity Josephson junctions (JJs) is governed by the temperature (T)- dependent occupation of Andreev bound states (ABS), making them promising candidates for sensitive thermal detection. In this study, we systematically engineer ABS to enhance the thermal sensitivity of critical current (lc) of proximity JJs, quantified as |dlc/dT/| for threshold readout scheme and |dlc/***−1| for inductive readout scheme. Using a gate-tunable graphene-based JJ platform, we explore the impact of key parameters—including channel length, transparency, carrier density, and superconducting material—on the thermal response. Our results reveal that the proximity-induced superconducting gap plays a crucial role in optimizing thermal sensitivity. Notably, we see a maximum |dlc/***−1| value of 0.6 K−1 at low temperatures with titanium-based graphene JJs. By demonstrating a systematic approach to engineering ABS in proximity JJs, this work establishes a versatile framework for optimizing thermal sensors and advancing the study of ABS-mediated transport. © 2025, CC BY.

关键词： Superconducting materials

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Correlation versus dissipation in a non-Hermitian Anderson impurity model

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Physical Review B 2025年第12期111卷 125157-125157页

作者： Kazuki Yamamoto Masaya Nakagawa Norio Kawakami Department of Physics Tokyo Institute of Technology Meguro Tokyo 152-8551 Japan Department of Physics University of Tokyo Hongo Tokyo 113-0033 Japan Fundamental Quantum Science Program TRIP Headquarters RIKEN Wako 351-0198 Japan Department of Physics Ritsumeikan University Kusatsu Shiga 525-8577 Japan Department of Materials Engineering Science Osaka University Toyonaka Osaka 560-8531 Japan

We analyze the competition between strong correlations and dissipation in quantum impurity systems from the Kondo regime to the valence fluctuation regime by developing a slave-boson theory for a non-Hermitian Anderson impurity model with one-body loss. Notably, in the non-Hermitian Kondo regime, strong correlations qualitatively change the nature of dissipation through renormalization effects, where the effective one-body loss is suppressed and emergent many-body dissipation characterized by the complex-valued hybridization is generated. We unveil the mechanism of a dissipative quantum phase transition of the Kondo state on the basis of this renormalization effect, which counterintuitively enhances the lifetime of the impurity against loss. We also find a crossover from the non-Hermitian Kondo regime to the valence fluctuation regime dominated by one-body dissipation. Our results can be tested in a wide variety of setups such as quantum dots coupled to electronic leads and quantum point contacts in ultracold Fermi gases.

关键词： Bosons

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Polarization-Tunable Colorimetric Metasurfaces for All-Optical and Non-Destructive Structural Characterization of Polymeric Nanofibers

arXiv

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arXiv 2025年

作者： Kirya, Paula Hochberg, Justin D. Kim, Han Sol Haddadin, Zaid Bordy, Samantha Byun, Jiuk Pokorski, Jonathan K. Poulikakos, Lisa V. Department of Mechanical and Aerospace Engineering UC San Diego La Jolla CA United States Aiiso Yufeng Li Family Department of Chemical and Nano Engineering UC San Diego La Jolla CA United States Department of Electrical and Computer Engineering UC San Diego La Jolla CA United States Program in Materials Science and Engineering UC San Diego La Jolla CA United States

Metasurfaces have pioneered significant improvements in sensing technology by tailoring strong optical responses to weak signals. When designed with anisotropic subwavelength geometries, metasurfaces can tune responses to varying polarization states of light. Leveraging this to quantify structural alignment in fibrous materials unveils an alternative to destructive characterization methods. This work introduces metasurface-enhanced polarized light microscopy (Meta-PoL), which employs polarization-tunable, guided-mode-resonant colorimetric metasurfaces to characterize molecular and bulk alignment of poly(Ε-caprolactone) (PCL) nanofibers in a far-field configuration. PCL nanofibers drawn at 0%, 400%, and 900% ratios were interfaced with the studied metasurfaces. Metasurface resonances coinciding with the intrinsic drawn nanofiber resonances – confirmed by Stokes Polarimetry – produced the strongest colorimetric enhancement, resultant from alignment-specific nanofiber reflectivity. The enhancement degree corresponded with molecular and bulk alignments for each draw ratio, as measured through differential scanning calorimetry and scanning electron microscopy, respectively. Thus, Meta-PoL presents an all-optical, non-destructive, and quantitative measurement of nanofiber alignment. Copyright © 2025, The Authors. All rights reserved.

关键词： Differential scanning calorimetry

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Change in Magnetic Order in NiPS3 Single Crystals Induced by a Molecular Intercalation

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Chemistry of materials 2025年第10期37卷 3594-3607页

作者： Chakraborty, Nirman Harchol, Adi Arnold, Beatriz Costa Sharma, Kusha Prabhu Gaonkar, Diksha Abu-Hariri, Azhar Yadav, Rajesh Kumar Dawod, Muhamed Eyal, Anna Amouyal, Yaron Brumme, Thomas Heine, Thomas Naveh, Doron Lifshitz, Efrat Schulich Faculty of Chemistry Solid State Institute Russel Berrie Nanotechnology Institute Grand Program for Energy and the Helen Diller Quantum Center Technion-Israel Institute of Technology Haifa3200003 Israel Helmholtz-Zentrum Dresden-Rossendorf Bautzner Landstr. 400 Dresden01328 Germany Center for Advanced Systems Understanding CASUS Untermarkt 20 Gorlitz02826 Germany Faculty of Engineering Bar-Ilan University Ramat-Gan5290002 Israel Institute of Nanotechnology and Advanced Materials Bar-Ilan University Ramat-Gan5290002 Israel Department of Materials Science and Engineering Technion-Israel Institute of Technology Haifa3200003 Israel Department of Physics Technion Haifa3200003 Israel Department of Theoretical Chemistry Technische Universität Dresden Bergstrasse 66 Dresden01069 Germany Yonsei University and ibs-cnm Seoul120-749 Korea Republic of

Intercalation is a robust method for tuning the physical properties of a vast number of van der Waals (vdW) materials. However, the prospects of using intercalation to modify magnetism in van der Waals (vdW) systems and the associated mechanisms have not been adequately studied. In this work, we modulated magnetic order in XY antiferromagnet NiPS3 single crystals by introducing pyridine molecules into the vdW’s gap under different thermal conditions. X-ray diffraction measurements indicated pronounced changes in the lattice parameter β, while magnetization measurements at in-plane and out-of-plane configurations exposed reversal trends in the crystals’ Néel temperatures through intercalation/deintercalation processes. The changes in magnetic ordering were also supported by three-dimensional thermal diffusivity experiments. The preferred orientation of the pyridine dipoles within the vdW gaps was deciphered via polarized Raman spectroscopy. The results highlighted the relationship between the preferential alignment of the intercalants, thermal transport, and crystallographic disorder, along with the modulation of anisotropy in the magnetic order. DFT + U calculations indicated that the varying interlayer exchange interactions, regulated by intercalants, were responsible for modulating samples’ magnetic ordering. The study uncovers the possible merit of intercalation for manipulating spin orientations in spin electronics and advanced quantum devices. © 2025 American Chemical Society.

关键词： Magnetization reversal

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Enhancing Power Factor in n-type Chalcopyrite CdSnAs₂ Thermoelectrics via Supercooled Solidification

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ACS Applied Energy materials 2025年

作者： Kishida, Shoki Okamoto, Norihiko L. Katsube, Ryoji Nagaoka, Akira Sumiyoshi, Isshin Nishioka, Kensuke Ichitsubo, Tetsu Nose, Yoshitaro Department of Materials Science and Engineering Kyoto University Kyoto 606-8501 Japan Institute for Materials Research Tohoku University Sendai 980-8577 Japan Department of Materials Process Engineering Nagoya University Nagoya 464-8603 Japan Electrical and Electronic Engineering Program University of Miyazaki Miyazaki 889-2192 Japan GX Research Center University of Miyazaki Miyazaki 889-2192 Japan

The practical application of thermoelectric (TE) materials is often limited by the relatively underdeveloped performance of n-type materials compared to their p-type counterparts. Chalcopyrite CdSnAs₂ is a promising n-type semiconductor for thermoelectric applications owing to its narrow bandgap around 0.3 eV and exceptionally high electron mobility of 10³-10⁴ cm² V^-1 s^-1. In this study, we investigated the crystal growth, microstructure, and thermoelectric properties of CdSnAs₂. Contrary to conventional understanding of unidirectional melt growth, CdSnAs₂ samples grown at higher cooling rates exhibited better crystallinity, whereas some cracks were observed in those cooled more slowly. Thermal analyses revealed that a phase transition from sphalerite to chalcopyrite occurred after solidification in slowly cooled samples, resulting in the formation of dislocations and cracks due to lattice mismatch between the phases. In contrast, rapid cooling induced supercooling, which lowered the solidification temperature and enabled the phase transition to occur in the presence of a residual liquid phase, thereby leading to a more favorable microstructure. As a result, the sample grown at the highest cooling rate (7.6 K min^-1) achieved an ultrahigh power factor of 3180 μW m^-1 K^-2 at 600 K and a peak ZT of 0.59 at 682 K. The power factor of CdSnAs₂ surpasses that of conventional binary n-type TE materials such as SnSe and PbTe, underscoring its strong potential for intermediate-temperature thermoelectric applications. © 2025 American Chemical Society.

关键词： energy harvesting n-type thermoelectrics solid−solid phase transition supercooling thermal analysis ultrahigh mobility

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Molecularly imprinted polymers for illicit drug detection: A review of computational and synthesis methods

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Talanta 2025年 294卷 128220页

作者： Neres, Lariel Chagas da Silva Khan, Sabir Zeb, Shakeel Sotomayor, Maria del Pilar Taboada Calvo-Marzal, Percy SP Araraquara14801-970 Brazil Department of Chemistry University of Central Florida OrlandoFL32816 United States Technological Development Center—CDTec Postgraduate Program in Materials Science and Engineering—PPGCEM Federal University of Pelotas—UFPel RS Pelotas96010-610 Brazil School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang212013 China

This review discusses the current state of molecularly imprinted polymers (MIPs) used for drug extraction and quantification. It begins with an introduction to MIP synthesis techniques that utilize illegal drugs as templates. The subsequent sections explore applications, focusing on the detection of illegal narcotics. The advantages and limitations of MIPs receive detailed examination. A comprehensive literature survey then covers various classes of illicit drugs, including opioids, stimulants, cannabinoids, and hallucinogens. Notably, the review highlights the role of computational simulations, including density functional theory (DFT), in optimizing MIP fabrication and enhancing performance. The review concludes with a discussion on the challenges related to the lack of standard parameters for selectivity, the need for robust characterization methods, and the pros and cons of using nanomaterials in MIPs. Recommendations for resolving these issues and potential future developments aimed at broadening the application scope in relevant fields are presented. Overall, this review serves as a valuable resource for researchers involved in the development and application of illicit drug detection technologies using molecularly imprinted polymers. © 2025 Elsevier B.V.

关键词： Density functional theory

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A Rapid Manual Solid Phase Peptide Synthesis Method for High-Throughput Peptide Production

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Journal of Biomedical materials Research - Part A 2025年第5期113卷 e37922页

作者： Overby, Clyde Abraham, Brittany Adjei-Sowah, Emmanuella March, Alyson Ling, Kevin Basu, Sayantani Benoit, Danielle S. W. Department of Biomedical Engineering University of Rochester RochesterNY United States Center for Musculoskeletal Research University of Rochester RochesterNY United States Department of Chemical Engineering University of Rochester RochesterNY United States Materials Science Program University of Rochester RochesterNY United States Department of Bioengineering Knight Campus for Accelerating Scientific Impact University of Oregon EugeneOR United States

Solid phase peptide synthesis (SPPS) techniques are critical for developing and using peptides in various biomedical applications. However, typical synthesis routes used in SPPS are either resource-intensive (e.g., with automated synthesis or commercial services) or time-consuming (e.g., with manual benchtop synthesis). Here, a rapid manual synthesis method was developed to produce up to 8 peptides with fast cycle times simultaneously. Peptides synthesized manually were of equivalent or superior quality to those produced by in-house microwave-assisted automated peptide synthesis, with higher average crude purity of 70% compared to 50%. The method significantly reduced synthesis time, enabling the parallel coupling of up to 8 amino acids simultaneously in 15–20 min, as opposed to traditional benchtop peptide synthesis, which requires 80–150 min per amino acid. This approach offers an intermediate throughput between milligram-scale libraries and gram-scale single peptide synthesis, enabling rapid iteration for novel peptide designs without the need for expensive automated systems. As a result, peptide modifications, including incorporation of unnatural amino acids, can be explored, accelerating the development of peptides for a wide range of applications. © 2025 The Author(s). Journal of Biomedical materials Research Part A published by Wiley Periodicals LLC.

关键词： Medical applications

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High-Performance Silicon Anodes Enabled by Multifunctional Ultrafine Silica Nanoparticle-Embedded Carbon Coatings for Lithium-Ion Batteries

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Advanced Energy materials 2025年第0期

作者： Sun, Zhefei Yin, Quanzhi Zhou, Shenghui Chen, Haoyu Wen, Sifan Yang, Huiping Wu, Xiaoyu Pan, Jianhai Han, Jiajia Yang, Hui Zhuang, Zilong Feng, Shijie Zhang, Li Peng, Dong-Liang Zhang, Qiaobao State Key Laboratory of Physical Chemistry of Solid Surfaces College of Materials Xiamen University Xiamen361005 China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Tan Kah Kee Innovation Laboratory Collaborative Innovation Center of Chemistry for Energy Materials Xiamen University Fujian Xiamen361005 China State Key Laboratory of Material Processing and Die & Mould Technology Department of Mechanics School of Aerospace Engineering Huazhong University of Science and Technology Hubei Wuhan430074 China Department of Mechanical Engineering University of Wisconsin-Madison MadisonWI53706 United States Materials Science and Engineering Program University of California San Diego La JollaCA92093 United States Longmen Laboratory Henan Luoyang471023 China

Silicon (Si) holds immense promise as viable anode for next-generation high-energy-density Li-ion batteries (LIBs). However, its poor ionic/electronic conductivity and significant volumetric changes during cycling lead to rapidly deteriorated LIB performance. Here, a novel multifunctional coating featuring ultrafine SiO2 nanoparticles (2-C) to resolve these challenges is proposed. This unique uSiO2-C coating provides high-efficient electron and ion transport pathways, while also improves interfacial stability and mitigates volume changes during cycling, thereby enhancing the conductivity and structural integrity of Si@uSiO2-C, as corroborated by extensive experimental and computational studies. In addition, the abundant interfaces in uSiO2-C coating facilitate Li+ transport and the evenly distributed ultrafine SiO2 nanoparticles impart high electrochemical reactivity and mechanical robustness. Consequently, the Si@uSiO2-C anode achieves a high reversible capacity of 2093 mAh g−1 at 0.2 A g−1, with a high initial Coulombic efficiency of 88.3%, superior rate capability and durability (1000 cycles, 928 mAh g−1 at 1.0 A g−1, 75% capacity retention). Full cells paired with commercial LiFePO4 cathodes demonstrate high cyclability, maintaining 80% capacity retention over 500 cycles at 4 C. This work highlights the vital role of multifunctional coating in promoting the electrochemical performance of Si-based anodes for high-performance LIBs. © 2025 Wiley-VCH GmbH.

关键词： SiO2 nanoparticles

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