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Towards energy-efficient(bi)carbonate electrolysis:Innovation and challenges

National science Open 2024年第6期3卷 8-11页

作者： Kewen Xing Junmei Chen Yanguang Li Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123China Jiangsu Key Laboratory for Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyMacaoChina

Electrochemical CO_(2) reduction reaction(CO_(2)RR)stands out as a promising approach for converting greenhouse gases into valuable chemicals and fuels,contributing to the closure of the artificial carbon ***,most current CO_(2)RR electrolyzers necessitate purified CO_(2) feed gases and fail to directly convert atmospheric CO_(2) or flue gases(the primary sources of CO_(2) emission).

关键词： gases closure convert

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Polymersome formation by solvent annealing-induced structural reengineering under 3D soft confinement

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Nano Research 2021年第12期14卷 4644-4649页

作者： Xi Mao Hao Li Jinwoo Kim Shuai Deng Renhua Deng Bumjoon J.Kim Jintao Zhu Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education(HUST) and State Key Laboratory of Materials Processing and Die&Mold TechnologySchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan430074China Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon34141Republic of Korea

A solvent annealing-induced structural reengineering approach is exploited to fabricate polymersomes from block copolymers that are hard to form vesicles through the traditional solution self-assembly *** specifically,polystyrene-b-poly(4-vinyl pyridine)(PS-b-P4VP)particles with sphere-within-sphere structure(SS particles)are prepared by three-dimensional(3D)soft-confined assembly through emulsion-solvent evaporation,followed by 3D soft-confined solvent annealing upon the SS particles in aqueous dispersions for structural engineering.A water-miscible solvent(e.g.,THF)is employed for annealing,which results in dramatic transitions of the assemblies,e.g.,from SS particles to *** approach works for PS-b-P4VP in a wide range of block ***,this method enables effective encapsulation/loading of cargoes such as fluorescent dyes and metal nanoparticles,which offers a new route to prepare polymersomes that could be applied for cargo release,diagnostic imaging,and nanoreactor,etc.

关键词： polymersome block copolymer three-dimensional(3D)confinement self-assembly solvent annealing

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Functionally graded structure of a nitride-strengthened Mg_(2)Si-based hybrid composite

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Journal of Magnesium and Alloys 2024年第3期12卷 1239-1256页

作者： Jeongho Yang Woongbeom Heogh Hogi Ju Sukhyun Kang Tae-Sik Jang Hyun-Do Jung Mohammad Jahazi Seung Chul Han Seong Je Park Hyoung Seop Kim Susmita Bose Amit Bandyopadhyay Martin Byung-Guk Jun Young Won Kim Dae-kyeom Kim Rigoberto CAdvincula Clodualdo Aranas Jr Sang Hoon Kim School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Department of Mechanical Design Engineering Hanyang UniversitySeoul 04763Republic of Korea Process Research 3 Team LG Display Co.Ltd.PajuGyeonggi-do 10845Republic of Korea Department of Materials Science and Engineering Chosun UniversityGwangju 61452Republic of Korea Institute of Well-Aging Medicare&Chosun University LAMP Center Chosun UniversityGwangju 61452Republic of Korea Division of Materials Science and Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Mechanical Engineering École de Technologie SupérieureMontrealQuebec H3C 1K3Canada Material&Component Convergence R&D Center Korea Construction Equipment Technology InstituteGunsanJeollabuk-do 54002Republic of Korea School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore Graduate Institute of Ferrous&Eco Materials Technology Pohang University of Science and TechnologyPohangGyeongsangbuk-do 37673Republic of Korea Advanced Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Institute for Convergence Research and Education in Advanced Technology Yonsei UniversitySeoul 03722Republic of Korea School of Mechanical and Materials Engineering Washington State UniversityPullmanWashington 99164USA School of Mechanical Engineering Purdue UniversityWest LafayetteIndiana 47907USA Research Institute of Advanced Manufacturing Technology Korea Institute of Industrial TechnologyIncheon 21999Republic of Korea Department of Macromolecular Science and Engineering Case Western Reserve UniversityClevelandOhio 44106USA Department of Chemical and Biomolecular Engineering and Joint Institute for Advanced Materials University of TennesseeKnoxvilleTennessee 37996USA Center for Nanophase Materials and Sciences Oak Ridge National LaboratoryOak RidgeTennessee 37830USA Department of Mechanical Engineering University of New BrunswickFrederictonNew Brunswick E3B 5A3Cana

The ex-situ incorporation of the secondary SiC reinforcement,along with the in-situ incorporation of the tertiary and quaternary Mg_(3)N_(2) and Si_(3)N_(4) phases,in the primary matrix of Mg_(2)Si is employed in order to provide ultimate wear resistance based on the laser-irradiation-induced inclusion of N_(2) gas during laser powder bed *** is substantialized based on both the thermal diffusion-and chemical reactionbased metallurgy of the Mg_(2)Si–SiC/nitride hybrid *** study also proposes a functional platform for systematically modulating a functionally graded structure and modeling build-direction-dependent architectonics during additive *** strategy enables the development of a compositional gradient from the center to the edge of each melt pool of the Mg_(2)Si–SiC/nitride hybrid ***,the coefficient of friction of the hybrid composite exhibits a 309.3%decrease to–1.67 compared to–0.54 for the conventional nonreinforced Mg_(2)Si structure,while the tensile strength exhibits a 171.3%increase to 831.5 MPa compared to 485.3 MPa for the conventional *** outstanding mechanical behavior is due to the(1)the complementary and synergistic reinforcement effects of the SiC and nitride compounds,each of which possesses an intrinsically high hardness,and(2)the strong adhesion of these compounds to the Mg_(2)Si matrix despite their small sizes and low concentrations.

关键词： Laser powder bed fusion Mg_(2)Si-SiC/nitride hybrid composite Both the thermal diffusion-and chemical reaction-based metallurgy Functionally graded structure Compositional gradient Wear resistance.

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Amorphous zinc-imidazolate all-dry resists 41

Amorphous zinc-imidazolate all-dry resists

引用

Advances in Patterning Materials and Processes XLI 2024

作者： Waltz, Kayley E. Eckhert, Patrick M. Corkery, Peter Ahmad, Mueed Kraetz, Andrea Miao, Yurun Lee, Dennis T. Abdel-Rahman, Mohammed K. Lan, Yucheng Haghi-Ashtiani, Paul Stein, Aaron Boscoboinik, J. Anibal Tsapatsis, Michael Fairbrother, D. Howard Department of Chemical and Biomolecular Engineering Institute for NanoBioTechnology Johns Hopkins University BaltimoreMD21218 United States Department of Chemistry Johns Hopkins University BaltimoreMD21218 United States Center for Functional Nanomaterials Brookhaven National Laboratory UptonNY11973 United States Department of Materials Science and Chemical Engineering Stony Brook University Stony BrookNY11790 United States Applied Physics Laboratory Johns Hopkins University LaurelMD20723 United States Department of Physics and Engineering Physics Morgan State University BaltimoreMD21251 United States

ISBN: (纸本)9781510672208

With the adoption of extreme ultraviolet lithography (EUVL) to decrease microelectronic device dimensions, recent photoresist research has focused on the development of next generation metal-organic resist materials. To enhance lithographic capabilities and mitigate common drawbacks seen from traditional solvent based processes like spin coating and solution phase development, interest has shifted towards solvent-free "dry"deposition and development. These dry techniques can obviate extra processing steps, significantly reduce the amount of solvent waste generated, and even allow for reduced defect density and higher resolution. The process described herein avoids the use of solvents, and ultimately many issues associated with solvents, by depositing metal-organic resists using atomic/molecular layer deposition (ALD/MLD) and developing them using a selective thermal dry etching process. The low temperature (e.g., 100-120°C) thermal development conditions used in this study are notable in the context of lithography processes, as the high temperatures required in other dry etching processes can be difficult to implement in nanofabrication processes. Our previous work has focused on using amorphous zinc-imidazolate (aZnMIm) films in an all-dry resist technology, achieving resolution down to 22nm. Here, we explore the role of temperature and time on dry development and examine pattern transfer into silicon substrates. Preliminary pattern transfer experiments suggest that an etch selectivity of at least 7:1 exists for electron-beam treated aZnMIm over silicon using a pseudo-Bosch plasma etch. Our findings demonstrate the feasibility of dry development at lower temperatures and times and suggest potential for aZnMIm as a high-resolution resist for nextgeneration lithography. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Solvents

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Natural antimicrobial properties of liquid smoke derived from cocoa pod shells in meatball preservation

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South African Journal of chemical engineering 2023年 46卷 106-111页

作者： Desvita, Hera Faisal, M. Mahidin, Mahidin Suhendrayatna Doctoral Program Post Graduate Program Universitas Syiah Kuala Indonesia Research Center for Chemistry National Research and Innovation Agency B.J. Habibie Science and Techno Park Serpong Banten South Tangerang 15314 Indonesia Chemical Engineering Department Faculty of Engineering Universitas Syiah Kuala Indonesia Halal Research Center Universitas Syiah Kuala Indonesia

The liquid smoke, which is produced by pyrolyzing wood materials containing cellulose, hemicellulose, and lignin, can be used to preserve food. Phenolic, acetic, and carbonyl compounds found in liquid smoke can serve as a natural preservative. This study aimed to determine meatball preservation ability of liquid smoke from cocoa pod shells. Specifically, cocoa pod shells were converted to liquid smoke using slow pyrolysis at three different temperatures, 300 °C, 340 °C and 380 °C. Prior to its use, liquid smoke was purified using distillation at 190 °C. Liquid smoke at concentrations of 0.5%–3.0% was then used to preserve meatballs using an immersion method. Total volatile base-nitrogen (TVB-N), total plate count (TPC), and most probable number (MPN) analyses were used to evaluate preservation performance of liquid smoke. The statistical methods for MPN using one-way ANOVA followed by Tukey's tests. The SNI (Standar Nasional Indonesia) threshold to test whether meatballs remained fresh (TVB-N <20 mg N/g). TPC test results indicated that beef meatballs stay fresh at room temperature for 42 h or 48 h of storage using 0.5% or 1%–3% liquid smoke concentrations, respectively. Based on MPN tests showed meatballs could last for 48 h for all samples. Liquid smoke produced from cocoa pod shells can be used as a natural preservative for beef meatballs;however, liquid smoke concentrations influence the maximum preservation period for meatballs. © 2023 The Author(s)

关键词： Cocoa pod shells Liquid smoke MPN Pyrolysis Total plate count Total volatile base-nitrogen

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Gaussian Process Regression-Based Lithium-Ion Battery End-of-Life Prediction Model under Various Operating Conditions

arXiv

引用

arXiv 2024年

作者： Park, Seyeong Lee, Jaewook Heo, Seongmin Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology 291 Daehak-ro Yuseong-gu Daejeon34141 Korea Republic of

For the efficient and safe use of lithium-ion batteries, diagnosing their current state and predicting future states are crucial. Although there exist many models for the prediction of battery cycle life, they typically have very complex input structures, making it very difficult and expensive to develop such models. As an alternative, in this work, a model that predicts the nominal end-of-life using only operating conditions as input is proposed. Specifically, a total of 100 battery degradation data were generated using a pseudo two-dimensional model with three major operating conditions: charging Crate, ambient temperature and depth-of-discharge. Then, a Gaussian process regression-based model was developed to predict the nominal end-of-life using these operating conditions as the inputs. To improve the model accuracy, novel kernels were proposed, which are tailored to each operating condition. The proposed kernels reduced the lifetime prediction error by 46.62% compared to the conventional kernels. Copyright © 2024, The Authors. All rights reserved.

关键词： Prediction models

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All-Dry Zinc-Imidazolate Resists for Electron Beam and EUV Lithography

All-Dry Zinc-Imidazolate Resists for Electron Beam and EUV L...

引用

International Conference on Extreme Ultraviolet Lithography 2024

ISBN: (数字)9781510681569

ISBN: (纸本)9781510681552

A high-resolution all-dry resist process is presented that utilizes amorphous zinc-imidazolate (aZnMIm) films deposited by atomic/molecular layer deposition (ALD/MLD), patterned with electron beam lithography (EBL), and developed with a low temperature gas phase etchant, hexafluoroacetylacetone (hfacH), to achieve well-resolved 16 nm thick, 20 nm pitch lines when using an organic-based underlayer. This work is a continuation of previous efforts that explored deposition, dry development, and pattern transfer. Previously, minimum feature sizes of 29 nm thick lines with 40 nm pitch were observed, but here, the use of an underlayer was able to shrink critical feature dimensions to 16 nm. © 2024 SPIE.

关键词： Amorphous films

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The Role of Electrochemical Oxidation on the Interfacial Tension of Eutectic Gallium Indium

ACS Electrochemistry

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ACS Electrochemistry 2024年第1期1卷 103-114页

作者： Sahar Rashid-Nadimi Valery Okatenko Minyung Song Yogiraj Shetty Adam L. Bachmann Nazgol Mehrabian Keith Hillaire Praneshnandan Nithyanandam Karen Daniels Abolfazl Kiani Michael D. Dickey Department of Chemical & Biomolecular Engineering North Carolina State University Raleigh North Carolina 27595 United States；Physical Science Department Bakersfield College Bakersfield California 93305 United States Laboratory of Nanochemistry for Energy Research Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne Sion CH-1950 Switzerland Department of Chemical & Biomolecular Engineering North Carolina State University Raleigh North Carolina 27595 United States Department of Physics North Carolina State University Raleigh North Carolina 27595 United States Department of Chemical & Biomolecular Engineering North Carolina State University Raleigh North Carolina 27595 United States；Department of Chemistry and Biochemistry California State University Bakersfield California 93311-1022 United States

This paper studies the electrochemistry of liquid eutectic gallium indium in aqueous sodium hydroxide solution. The work is motivated by a recent observation that electrochemical oxidation of liquid metal can significantly lower its effective interfacial tension. To identify possible electrochemical reactions that could contribute to the unique interfacial activity, we use a suite of voltammetry techniques. We identify six regimes: (1) Below open circuit potential, the liquid metal has a large metal-like interfacial tension since it lacks a conformal oxide layer due to the high pH. (2) Just above the circuit potential, electrochemical oxidation of gallium commences. The oxide species do not accumulate due to dissolution and the interfacial tension does not lower. (3) At slightly higher potential, a thin film forms on the surface and the current drops. This passivation of the surface may occur by formation of hydrolyzed Ga oxide. (4) At increased potentials, passivation breaks down and tension drops significantly. (5) Beyond passivation breakdown, electrochemical oxidation of gallium forms soluble gallium hydroxide species. The interfacial tension drops linearly in this regime. (6) At even higher potentials, the surface partially repassivates. Insights from this study may provide better electrochemical control of the interfacial tension of liquid metal, which is useful for creating forces to move and manipulate small volumes of the metal.

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Regenerable liquid metal nanozymes enable pH-regulated multi-enzyme mimicking

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Matter 2025年第6期8卷

作者： Shen, Yuhe Xing, Ruizhe Xu, Xiaojian Wang, Yuefei Huang, Renliang Su, Rongxin Dickey, Michael D. Qi, Wei Kong, Jie State Key Laboratory of Chemical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin300072 China School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an710072 China Tianjin Key Laboratory for Marine Environmental Research and Service School of Marine Science and Technology Tianjin University Tianjin300072 China Department of Chemical and Biomolecular Engineering North Carolina State University RaleighNC27695 United States

Nanozymes are nanomaterials with enzyme-like characteristics that are found in the fields of catalysis, biomedicine, and environmental science. In this work, we present a core-shell liquid metal nanozyme (MnOx@EGaIn) that shows pH-regulated multi-enzyme mimicking capabilities. By harnessing the amphoteric nature of liquid metal surface oxides, these liquid metal nanozymes demonstrate tunable reaction possibilities under various pH conditions (4.0–9.5). This property enables highly efficient enzyme-mimicking activities, including oxidase (OXD, specific activity, SA of 539 U/g), catalase (CAT, SA of 2621 U/g), and superoxide dismutase (SOD, SA of 2391 U/g). Moreover, these liquid metal nanozymes showed notable regenerability, allowing them to be recycled and re-synthesized from their raw material forms. This discovery not only broadens the range of materials and applications for nanozymes but also equips them with the ability to perform multiple enzyme functions while remaining regenerative, providing valuable insights for the design of next-generation enzyme-mimicking materials. © 2025 Elsevier Inc.

关键词： Superoxide dismutase

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Code interoperability extends the scope of quantum simulations

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npj Computational Materials 2021年第1期7卷 302-311页

作者： Marco Govoni Jonathan Whitmer Juan de Pablo Francois Gygi Giulia Galli Materials Science Division and Center for Molecular Engineering Argonne National LaboratoryLemontIL 60439USA Department of Chemical and Biomolecular Engineering University of Notre DameNotre DameIN 46556USA Pritzker School of Molecular Engineering University of ChicagoChicagoIL 60637USA Department of Computer Science University of CaliforniaDavisCA 95616USA Department of Chemistry University of ChicagoChicagoIL 60637USA

The functionality of many materials is critically dependent on the integration of dissimilar components and on the interfaces that arise between *** description of such heterogeneous components requires the development and deployment of first principles methods,coupled to appropriate dynamical descriptions of matter and advanced sampling techniques,in order to capture all the relevant length and time scales of importance to the materials’*** is thus essential to build simple,streamlined computational schemes for the prediction and design of multiple properties of broad classes of materials,by developing interoperable codes which can be efficiently coupled to each other to perform complex *** discuss the use of interoperable codes to simulate the structural and spectroscopic characterization of materials,including chemical reactions for catalysis,the description of defects for quantum information science,and heat and charge transport.

关键词： quantum catalysis spectroscopic

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