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Enabling rechargeable Li-MnO_(2) batteries using ether electrolytes

SmartMat 2023年第5期4卷 131-138页

作者： Dawei Xia Hongpeng Gao Mingqian Li John Holoubek Qizhang Yan Yijie Yin Panpan Xu Zheng Chen Department of NanoEngineering University of California San DiegoLa JollaCaliforniaUSA Program of Materials Science and Engineering University of California San DiegoLa JollaCaliforniaUSA Program of Chemical Engineering University of California San DiegoLa JollaCaliforniaUSA Sustainable Power and Energy Center University of California San DiegoLa JollaCaliforniaUSA

A low-carbon future demands more affordable batteries utilizing abundant elements with sustainable end-of-life battery *** the economic and environmental advantages of Li-MnO_(2)batteries,their applica-tion so far has been largely constrained to primary ***,we demonstrate that one of the major limiting factors preventing the stable cycling of Li-MnO_(2)batteries,Mn dissolution,can be effectively mitigated by employing a common ether electrolyte,1 mol/L lithium bis(trifluorometha-nesulfonyl)imide(LiTFSI)in 1,3-dioxane(DOL)/1,2-dimethoxyethane(DME).We discover that the suppression of this dissolution enables highly reversible cycling of the MnO_(2)cathode regardless of the synthesized phase and ***,we find that both the LiPF_(6)salt and carbonate solvents present in conventional electrolytes are responsible for previous cycling *** ether electrolyte,paired with MnO_(2)cathodes is able to demonstrate stable cycling performance at various rates,even at elevated temperature such as 60℃.Our discovery not only represents a defining step in Li-MnO_(2)batteries with extended life but provides design criteria of electrolytes for vast manganese-based cathodes in rechargeable batteries.

关键词： ether-based electrolytes Li-MnO batteries Mn deposition Mn dissolution reuse of primary batteries

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The Effect of Temperature and Shear on the Gelation of Cellulose Nanocrystals in Deep Eutectic Solvents

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Biomacromolecules 2024年第1期25卷 248-257页

作者： Ren, Zhi-Fan Lin, Kuan-Yu Yu, Sheng-Sheng Department of Chemical Engineering National Cheng Kung University Tainan70101 Taiwan Core Facility Center National Cheng Kung University Tainan70101 Taiwan Program on Smart and Sustainable Manufacturing Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng Kung University Tainan70101 Taiwan

With the flourishing development of 3D printing technology, the demand for printing materials has been increasing rapidly in recent years. In particular, physical gels formed by cellulose nanocrystals (CNCs) exhibit suitable shear-thinning behavior, high storage moduli, and high yield stresses for extrusion-based printing. While most studies use water as the dispersing medium to form CNC percolated gels, the dispersing behavior of CNCs in alternative solvents, such as deep eutectic solvents (DESs), has not been fully explored. Especially, DESs have low volatility and good ionic conductivity to form functional ionogels. Precise control of the rheological properties and selection of suitable dispersion processes continue to pose significant challenges. In light of this, we have devised a novel dispersion process employing thermal and shear treatments to facilitate the gelation of CNCs within DESs. A crude dispersion of CNCs in the DES underwent thermal treatment to partially remove the surface sulfate ester on CNCs. As a result, the repulsive force between CNCs decreases. A second shear then significantly increases the strength of CNC/DES gels potentially because of the increased rod-rod contacts. This approach enables the formation of high-strength gels at low concentrations of CNCs. Both thermal treatment and a second shear are crucial to forming strong percolated CNC gels. In short, we showed a simple strategy to facilitate the dispersion and gelation of CNCs for direct ink writing. © 2023 American Chemical Society.

关键词： Gels

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Insights into the Structural and Thermodynamic Instability of Ni-Rich NMC Cathode

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ACS sustainable Chemistry and engineering 2023年第18期11卷 6978-6987页

作者： Tran, Ngoc Thanh Thuy Lin, Che-An Lin, Shih-Kang Research Center National Cheng Kung University Tainan701 Taiwan Department of Materials Science and Engineering National Cheng Kung University Tainan701 Taiwan Program on Smart and Sustainable Manufacturing Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng Kung University Tainan70101 Taiwan

The Ni-rich LiNi1-x-yMnxCoyO2 (NMC) layered oxides have been promising materials to replace the LiCoO2 commercial cathode due to their high operation voltages, low cost, and enhanced capacity. However, structural instability is the main drawback of the Ni-rich NMC system, leading to capacity fading, which prevents its commerce application. While numerous efforts have been made to comprehend and overcome this issue, there remains a lack of systematic phase stability analysis which is an essential factor to be addressed. Herein, systematic first-principles calculations were performed in this study to reveal the structural, oxidation, and phase stability of Ni-rich NMC during delithiation. This is the first report on competing phases of Ni-rich NMC at various states of charge (SoCs). The compounds with the spinel and rock salt structures formed during delithiation and oxygen evolution takes place at highly delithiation cases, which are likely the origins of capacity fading and crack formation at the surface. This work also outlined the thermodynamic foundation of doping and oxidation state gradient-based core-shell strategies for resolving the instability and enhancing the capacity retention of Ni-rich NMC layered oxides as cathode materials in Li-ion batteries. © 2023 American Chemical Society.

关键词： Cathodes

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Optimal Gantry Crane PID Controller Based on LQR with Prescribed Degree of Stability by Means of GA, PSO, and SA 7

Optimal Gantry Crane PID Controller Based on LQR with Prescr...

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7th International Conference on Electric Vehicular Technology, ICEVT 2022

作者： Bandong, Steven Kirana, Rizky Cahya Nazaruddin, Yul Yunazwin Joelianto, Endra Institut Teknologi Bandung Engineering Physics Doctoral Program Faculty of Industrial Technology Bandung Indonesia Institut Teknologi Bandung National Center for Sustainable Transportation Technology Instrumentation and Control Graduate Program Bandung Indonesia Institut Teknologi Bandung National Center for Sustainable Transportation Technology Instrumentation and Control Research Group Department of Engineering Physics Bandung Indonesia

ISBN: (数字)9781665409421

ISBN: (纸本)9781665409421

Trade between islands and countries is increasing in the current era of globalization which also increases the traffic of goods at ports. Rubber Tyred Gantry Crane (RTGC) is an important component in the seaports distribution chain, which act as a loading and unloading machine at the container yard. However, heavy trade traffic will likely cause fatigue and negligence if the RTGC is operated manually. Therefore, it is necessary to automate RTGC by applying optimal control. The paper introduces an alternative approach to designing an optimal PID controller built from the LQR method combined with a prescribed degree of stability for achieving the required transient and steady-state responses of RTGC in the port. Genetic Algorithm (GA), Particle Swarm optimization (PSO), and Simulated Annealing (SA) are applied to select the suitable stability degree value and weighting matrices in the LQR cost function. Simulation results indicate that GA can provide the optimal PID controller to follow the reference trajectory and minimize the swing angle better than PSO and SA. © 2022 IEEE.

关键词： Genetic algorithms

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Clean environmental strategy applied to anatomy laboratory wastewater purification: a hybrid and integrated performance of a photo-electro-Fered-Fenton process

Cleaner Chemical Engineering

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Cleaner Chemical engineering 2025年 11卷

作者： Maikow Zago Fernando H. Borba Liziara Cabrera Daiana Seibert Nicoli Justen Jonas J. Inticher Camila F. Zorzo Postgraduate Program of Environment and Sustainable Technologies Federal University of Fronteira Sul Rua Jacob Reinaldo Haupenthal 1580 Sala 104 Bloco dos Professores. Bairro Industrial CEP 97900-00 Cerro Largo RS Brazil Postgraduate Program of Chemical Engineering West Paraná State University Rua da Faculdade 645 Jd. Santa Maria Toledo PR 85903-000 Brazil

Formaldehyde (CH 2 O) is an important preservative of anatomic pieces in laboratories; Solutions with high concentrations of CH 2 O are used to avoid the deterioration of anatomic pieces. Besides the high concentration of CH 2 O, organic content may leachate from the material stored in the tanks, increasing the complexity of the wastewater generated. The anatomy laboratory wastewater with high formaldehyde concentration (ALW-CFA) presents potential toxic effects to humans and the ecosystem in general, for this reason, proper treatment is demanded before its discharge. In the present work, the degradation of CH 2 O and reduction of toxicity levels of ALW-CFA samples were studied through the application of the process photo-electro-Fered-Fenton process (PEF-Fered). The suitable operational conditions of the process PEF-Fered such as initial solution pH, current intensity, and H 2 O 2 initial concentration, were studied by the application of an RSM evaluating the reduction of concentrations of CH 2 O and TOC. Then, the increment of O 3 to the PEF-Fered process was performed (PEF-Fered-O 3 ), aiming to increase the oxidative potential of the system. However, it was observed that the use of many oxidative inputs at the same time (hybrid process) was not interesting for the ALW-CFA degradation, thus, the best treatment strategy which provided a lower toxicity level (LC 50 % = 56.94) was the AO followed by H 2 O 2 and O 3 , with a removal of 90 % of CH 2 O and 85 % of TOC, under the following operational conditions, solution pH 4.5; the current intensity of 2.4 and H 2 O 2 concentration of 24,000 mg l -1 . With the application of the advanced combined treatment, the pollution potential of this wastewater was reduced, evidencing the protection of human health and ecosystems in general.

关键词： Formaldehyde wastewater Combined advanced processes Electro advanced oxidation process Acute toxicity assays

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Room-temperature synthesis of high-efficiency and high-stability near-infrared FAPbI3 quantum dots passivated with zwitterionic short-chain amino acid ligands

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Journal of Luminescence 2025年 284卷

作者： Liao, Wan Hsuan Tseng, Yu Ting Chu, Sheng-Yuan Program on Integrated Circuit Design Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng Kung University Tainan Taiwan Department of Electrical Engineering National Cheng Kung University Tainan70101 Taiwan Department of Electrical Engineering National Cheng Kung University Tainan Taiwan Center for Micro/Nano Science and Technology National Cheng Kung University Tainan701 Taiwan

In the contemporary era of rapid technological advancement, light-emitting diode (LED) technology has become indispensable in many fields, including lighting, display, and communication. Nevertheless, developing efficient light sources in the near-infrared (NIR) region presents a significant challenge. Perovskite materials have garnered considerable interest in this spectral range due to their exemplary optical properties. An efficient perovskite near-infrared light source was synthesized at room temperature by utilizing the small molecule amino acid D-4-tert-butylphenylalanine (D4TBP). This resulted in successfully synthesizing a highly stable D4TBP-FAPbI3 near-infrared perovskite quantum dot. The photoluminescence quantum yield (PLQY) increased from 40 % to 68 %, and the film's contact angle improved from 65.36° to 93.87°, significantly enhancing its environmental stability. © 2025

关键词： Luminescent devices

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Design and Field Implementation of a Multi-Agent System for Voltage Regulation Using Smart Inverters and Data Distribution Service (DDS)

Design and Field Implementation of a Multi-Agent System for ...

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2018 IEEE Electrical Power and Energy Conference, EPEC 2018

作者： Saxena, Shivam El-Taweel, Nader A. Farag, Hany E. Hilaire, Leigh St. Electrical Engineering and Computer Sciencee York University Toronto Canada Toronto and Region Conservation Authority Sustainable Tech. Eval Program Toronto Canada

ISBN: (纸本)9781538654194

This paper proposes a multi-agent scheme to regulate voltage in smart distribution grids using smart inverters and Data Distribution Service (DDS). DDS is an Internet of Things (IoT) based communication framework that is well suited to handle the demanding requirements of inter-agent communication within smart grid applications, including: Asynchronous and low-latency messaging, high scalability, and seamless interoperability. Coupling smart inverters with DDS results in a fully distributed control and communication platform that can significantly increase the penetration of distributed and renewable energy resources in distribution networks. The proposed multi-agent scheme is tested at a real-world microgrid to show its ability to mitigate voltage regulation challenges using both local and coordinated control. © 2018 IEEE.

关键词： Distributed power generation

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Fundamental understanding of carbonaceous materials' influence on slag foaming behavior during EAF steelmaking

Fundamental understanding of carbonaceous materials' influen...

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AISTech 2006 - Iron and Steel Technology Conference

作者： Rahman, Mahfuz Sahajwalla, Veena Khanna, Rita Saha-Chaudhury, N. Knights', David O'Kane, Paul Sustainable Materials Processing Program School of Materials Science and Engineering University of New South Wales Sydney Australia OneSteel Rooty Hill Sydney Australia

No abstract available

ISBN: (纸本)1886362858

No abstract available

关键词： EAF Feo reduction Gas bubbles Interfacial reaction Slag Slag foaming Volume ratio

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Altitudinal Migration of Species of Fir (Abies spp.) in Adaptation to Climate Change

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Water, Air, and Soil Pollution 2022年第9期233卷 1-16页

作者： Tekin, Oktay Cetin, Mehmet Varol, Tugrul Ozel, Halil Baris Sevik, Hakan Zeren Cetin, Ilknur Institute of Science and Engineering Department of Sustainable Agriculture and Natural Plant Resources Kastamonu University Kastamonu Turkey Faculty of Architecture Department of City and Regional Planning Ondokuz Mayis University Samsun Turkey Faculty of Forestry Department of Forest Engineering Bartin Turkey Faculty of Forestry Department of Forest Engineering Bartin University Bartin Turkey Faculty of Engineering and Architecture Department of Environmental Engineering Kastamonu University Kuzeykent Campus Kastamonu37150 Turkey YOK 100/2000 Scholarship Program of Sustainable Forestry Institute of Graduate School Department of Forest Engineering Bartin University Bartin Turkey Department of Park and Garden Plants Program of Landscape and Ornamental Plants Cultivation Samsun Vocational School Ondokuz Mayis University Samsun Turkey

Global climate change is considered an irreversible problem, which might directly or indirectly affect all the organisms and ecosystems on the earth and the world has to struggle with. Plants having no effective movement mechanism are the group that global climate change will affect the most. In order to minimize the species and population losses, it is important to estimate the changes in the available distribution areas of species and to ensure the migration mechanism, which the species will need, by the hand of humans. The present study aims to reveal how potential distribution areas of fir, which is among the significant tree species of Turkey and significant portion of global distribution of which is in Turkey, will change from an altitudinal aspect because of the climate change. The results achieved showed that, because of the effects of global climate change, the suitable distribution areas of Abies nordmanniana subsp. nordmanniana will significantly decrease especially at high altitudes and that suitable distribution areas of Abies nordmanniana subsp. equi-trojani will reduce at altitudes higher than 1400 m but increase generally at the altitudes between 200 and 600 m. Moreover, suitable distribution areas of Abies cilicica will shift towards higher altitudes. © 2022, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

关键词： Climate change

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Recycling of waste plastics for slag foaming in EAF steelmaking

Recycling of waste plastics for slag foaming in EAF steelmak...

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AISTech 2006 - Iron and Steel Technology Conference

作者： Sahajwalla, Veena Khanna, Rita Rahman, Mahfuz Huang, Ziyun Tanaka, Ekutanong Saha-Chaudhury, N. Knights, David O'Kane, Paul Sustainable Materials Processing Program School of Materials Science and Engineering University of New South Wales Sydney Australia Onesteel Rooty Hill Sydney Australia

No abstract available

ISBN: (纸本)1886362858

No abstract available

关键词： Carbon dissolution EAF steelmaking Slag Slag foaming Volume ratio Waste plastics

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