检索结果-内蒙古大学图书馆

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

来源：评论

学校读者我要写书评

暂无评论

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

Comprehensive technical analysis of post-combustion carbon capture and storage based on monoethanolamine absorption for petrochemical industry in Indonesia

引用

Clean Energy 2024年第6期8卷 16-36页

作者： Muh Asyrofi Rahma Muthia Mohammad Akita Indianto Energy Systems Engineering Graduate Program Department of Interdisciplinary EngineeringFaculty of EngineeringUniversitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia Department of Chemical Engineering Faculty of EngineeringUniversitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia Sustainable Energy Systems and Policy Research Cluster Universitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia Tropical Renewable Energy Center Faculty of EngineeringUniversitas IndonesiaKampus Baru UI DepokDepokWest Java 16424Indonesia

The implementation of carbon capture and storage in the petrochemical industry is one of the means of *** research focuses on a comprehensive technical analysis of the deployment of post-combustion carbon capture and storage based on monoethanolamine absorption in the petrochemical *** olefin complex petrochemical industry in Tuban,Indonesia,is the basis for the analysis,which includes a steam cracker,polyethylene,polypropylene,and raw pyrolysis gasoline hydrotreating units,with capacities of 1000,940,600,and 570 kilotons/year,*** total energy consumption is about 16024.53 GJ/h,and the CO_(2) emissions are about 1.6 megatons/*** on these plant systems,comprehensive technical analyses of the implementation of carbon capture and storage in that industry were performed using Aspen HYSYS®simulation *** analysis was carried out to determine the total CO_(2) captured,energy intensity,monoethanolamine consumption,and net CO_(2) captured in various scenarios based on the number of absorber column stages,absorption pressure,and desorption *** CO_(2) storage site is about 100 km away and is transported by an onshore pipeline with a supercritical phase of CO_(2).The optimal net CO_(2) capture value is achieved by setting up a 50-stage absorber column with a pressure of 1 barg and a temperature of 110℃ at the top of the desorber column,resulting in a CO_(2) capture yield of 86.4%and an energy intensity of 12.6 GJ/ton CO_(2).Under these conditions,the net CO_(2) captured in the scenario based on gas power plants’electricity is 0.225 megatons/year,while in the scenario based on gas power plants incorporating 30%biomass electricity,it is 0.544 megatons/*** increased use of renewable energy in carbon capture and storage facilities,more net CO_(2) is *** study can be applied to various cases of post-combustion carbon capture and storage implementation in the industrial sector,especially in the

关键词： carbon capture and storage petrochemical olefin monoethanolamine absorption pipeline injection energy intensity net captured CO_(2)

来源：评论

学校读者我要写书评

暂无评论

Evaluating Urban Runoff in a Catchment of Güzelyurt: A Comparative Analysis of Traditional and LID Approaches 15th

Evaluating Urban Runoff in a Catchment of Güzelyurt: A Comp...

引用

15th International Congress on Advances in Civil engineering, ACE 2023

作者： Baig, Mirza Mohammed Abdul Basith Akıntuğ, Bertuğ Sustainable Environment and Energy Systems Graduate Program Middle East Technical University Kalkanlı Güzelyurt99738 Turkey Civil Engineering Program Middle East Technical University Northern Cyprus Campus Kalkanlı Mersin 10 Güzelyurt99738 Turkey

ISBN: (纸本)9789819717804

Global warming and climate change have become pressing environmental challenges, primarily caused by human activities such as burning fossil fuels and deforestation. These activities release greenhouse gases into the atmosphere, disrupting the natural balance of radiation and leading to rising global temperatures. The consequences of global warming include more frequent and severe heatwaves, changes in precipitation patterns, and increased risks of urban flooding. This research focuses on sustainable stormwater management as a strategy to mitigate urban flooding and adapt to climate change. The study area is the city of Güzelyurt in Northern Cyprus, characterized by a flat topography and limited stormwater infrastructure. The existing stormwater network is insufficient and prone to failures during rainfall events. The research compares the effectiveness and efficiency of two approaches: a traditional approach that involves resizing conduits, and a sustainable approach that implements Low-Impact Development (LID) strategies. LID strategies aim to mimic natural hydrological processes and include measures such as green infrastructure, permeable pavements, rainwater harvesting systems, and vegetative swales. By implementing these strategies, stormwater runoff can be controlled, mitigating the risk of flooding, improving water quality, promoting groundwater recharge, and reducing the demand for freshwater resources. The study utilizes the Storm Water Management Model (SWMM) software to design the existing stormwater management network and simulate different scenarios. Through the evaluation of performance and analysis of results, the research results demonstrate that the implementation of LID strategies effectively doubled the existing rainfall handling capacity of the stormwater drainage system from 20 mm/h to 40 mm/h. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Deforestation

来源：评论

学校读者我要写书评

暂无评论

Integration of Small Unmanned Aircraft Systems and Deep Learning for Efficient Airfield Pavement Crack Detection and Assessment

Integration of Small Unmanned Aircraft Systems and Deep Lear...

引用

International Conference on Transportation and Development 2024: Transportation Safety and Emerging Technologies, ICTD 2024

作者： All Sourav, Md Abdullah Ceylan, Halil Kim, Sunghwan Brynick, Matthew Dept. of Civil Construction and Environmental Engineering Iowa State Univ. AmesIA United States Dept. of Civil Construction and Environmental Engineering and Program for Sustainable Pavement Engineering and Research Iowa State Univ. AmesIA United States Program for Sustainable Pavement Engineering and Research Institute for Transportation Iowa State Univ. AmesIA United States Federal Aviation Administration Airport Pavement R&D Section William J. Hughes Technical Center NJ United States

ISBN: (纸本)9780784485514

Airfield pavement inspection and maintenance are critical aspects of aviation infrastructure, representing a substantial portion of life-cycle costs. Longitudinal, transverse, and diagonal (LTD) cracks;corner breaks;shattered slabs in Portland cement concrete (PCC) pavement;and longitudinal and transverse (L&T) cracks of asphalt concrete (AC) pavement consist of most of the airfield pavement distresses. Traditional airfield pavement inspection methods are manual, time-consuming, laborious, and reliant on the inspector’s experience, leading to increased expenses and safety risks. This research explores the potential to automatically identify those distresses in red-green-blue images using four variants of deep learning (DL) model YOLOv8, ranging from nano to large. YOLOv8 is a widely used off-the-shelf DL object detection model that allows rapid training and easy execution. A DL training dataset of 5,273 small uncrewed aircraft systems (sUAS) collected images was developed. The transfer learning technique was used, and the dataset passed through each model 100 times for adequate training. The model exhibits mean average precision values exceeding 0.65, with varying processing times. Such accuracy showed that crack-related distress detection using DL models could enhance airfield pavement inspection efficiency. © ASCE.

关键词： Drones

来源：评论

学校读者我要写书评

暂无评论

Effect of Zr addition on Knoop hardness of Mg-Sc alloys produced by single-roll rapid solidification

引用

Keikinzoku/Journal of Japan Institute of Light Metals 2023年第12期73卷 639-645页

作者： Minami, Hideki Yamaguchi, Tatsuya Tsukeda, Tadayoshi Aida, Tetsuo Tabata, Hironobu Program of Materials Science and Engineering Studies in Science and Engineering Graduate School of Science and Engineering University of Toyama 3190 Gofuku Toyama-shi Toyama930-8555 Japan Faculty of Sustainable Design Academic Assembly University of Toyama Toyama Toyama-shi Japan CHUETSU METAL WORKS CO. LTD. Nakaniikawa-gun Toyama Japan

Recently, it has been found that Mg-Sc alloys with a body-centered cubic (bcc) structure have excellent workability, strength and ductility, and exhibit superelasticity at room temperature. However, due to the high cost of Sc, such alloys have not yet been put into practical use. Therefore, in this study, Zr, which is less expensive than Sc, was added to a Mg-Sc alloy, and a single-roll rapid solidification method was used to directly obtain ribbons from the molten metal. The thickness of the resulting alloy ribbons was measured using a digital microscope, the crystal phase was identified using X-ray diffraction (XRD) analysis, the microstructure was observed using field-emission scanning electron microscopy, and the hardness was evaluated by a Knoop hardness test. The results indicated that continuous Mg-Sc-Zr alloy ribbons with a uniform width and a thickness of about 50 μm could be obtained. From the XRD results, the rapid cooling process caused an increase in the fraction of the bcc phase relative to that in a Mg-Sc ingot;this phase is stable at higher temperatures. The Knoop hardness of the Mg-Sc-Zr alloy ribbons was found to increase with increasing Zr content, which is considered to be due to microstructural refinement. © 2023 The Japan Institute of Light Metals.

关键词： Magnesium alloys

来源：评论

学校读者我要写书评

暂无评论

Video Summarization With Spatiotemporal Vision Transformer

引用

IEEE Transactions on Image Processing 2023年 32卷 3013-3026页

作者： Hsu, Tzu-Chun Liao, Yi-Sheng Huang, Chun-Rong National Chung Hsing University Department of Computer Science and Engineering Taichung402 Taiwan National Cheng Kung University Cross College Elite Program and Academy of Innovative Semiconductor and Sustainable Manufacturing Tainan701 Taiwan

Video summarization aims to generate a compact summary of the original video for efficient video browsing. To provide video summaries which are consistent with the human perception and contain important content, supervised learning-based video summarization methods are proposed. These methods aim to learn important content based on continuous frame information of human-created summaries. However, simultaneously considering both of inter-frame correlations among non-adjacent frames and intra-frame attention which attracts the humans for frame importance representations are rarely discussed in recent methods. To address these issues, we propose a novel transformer-based method named spatiotemporal vision transformer (STVT) for video summarization. The STVT is composed of three dominant components including the embedded sequence module, temporal inter-frame attention (TIA) encoder, and spatial intra-frame attention (SIA) encoder. The embedded sequence module generates the embedded sequence by fusing the frame embedding, index embedding and segment class embedding to represent the frames. The temporal inter-frame correlations among non-adjacent frames are learned by the TIA encoder with the multi-head self-attention scheme. Then, the spatial intra-frame attention of each frame is learned by the SIA encoder. Finally, a multi-frame loss is computed to drive the learning of the network in an end-to-end trainable manner. By simultaneously using both inter-frame and intra-frame information, our method outperforms state-of-the-art methods in both of the SumMe and TVSum datasets. The source code of the spatiotemporal vision transformer will be available at https://***/nchucvml/STVT. © 1992-2012 IEEE.

关键词： Job analysis

来源：评论

学校读者我要写书评

暂无评论

Effect of chemical composition and microstructure on the thermal conductivity of Mg-Al-Ca alloys

引用

Keikinzoku/Journal of Japan Institute of Light Metals 2024年第1期74卷 9-13页

作者： Kirimoto, Yuichi Kondo, Natsuki Ito, Mizuki Tsukeda, Tadayoshi Aida, Tetsuo Tabata, Hironobu Kurihara, Hideki Suzuki, Mayumi Department of Nano and Functional Material Science Graduate School of Science and Engineering for Education University of Toyama 3190 Gofuku Toyama-shi Toyama930-8555 Japan School of Sustainable Design Materials and Engineering University of Toyama Toyama-shi Toyama Japan Program of Materials Science and Engineering Studies in Science and Engineering Graduate School of Science and Engineering University of Toyama Toyama-shi Toyama Japan Faculty of Sustainable Design Academic Assembly University of Toyama Toyama-shi Toyama Japan CHUETSU METAL WORKS CO. LTD. Nakaniikawa-gun Toyama Japan Saitama Industrial Technology Center Kawaguchi-shi Saitama Japan Department of Mechanical Systems Engineering Faculty of Engineering Toyama Prefectural University Imizu-shi Toyama Japan

In recent years, the increasing demand for electric vehicles, digital devices such as PCs and smartphones, and renewable energy storage systems has created a need for higher-performance batteries. Accordingly, the thermal conductivity of the case that houses the battery is becoming increasingly important. In this study, compositions with high thermal conductivity and good castability were investigated, focusing on Mg-Al-Ca alloys, and the relationship between the two was examined through thermal conductivity measurements and microstructural observations. As a result, the Mg-6%Al-4%Ca alloy was optimal in terms of castability and thermal conductivity. It was confirmed that a lower Al solid solution capacity and a higher purity of the matrix phase are important to improve the thermal conductivity. It is also suggested that the second phase, platelet Al2Ca, is likely to be recognized and enriched in the matrix, contributing to the improvement of thermal conductivity. The amount of Ca solid solution in the matrix was suggested to be reduced by the enrichment of Al in the matrix. The Ca solid solution in the matrix was found to be less effective in reducing thermal conductivity than the Al solid solution. © 2024 The Japan Institute of Light Metals.

关键词： Magnesium alloys

来源：评论

学校读者我要写书评

暂无评论

COMPARATIVE PERFORMANCE OF MACHINE LEARNING MODELS FOR TEMPERATURE PREDICTION IN VANADIUM REDOX FLOW BATTERIES

COMPARATIVE PERFORMANCE OF MACHINE LEARNING MODELS FOR TEMPE...

引用

International Conference on Green Energy, Computing and Intelligent Technology 2024, GEn-CITy 2024

作者： Zhang, Anxiu Juwono, Filbert H. Li, Hongfei Purwanto, Erick Wong, W.K. Liu, Linfeng Telecommunications Engineering Program Xi'an Jiaotong-Liverpool University Suzhou China Department of Electrical and Electronic Engineering Xi'an Jiaotong-Liverpool University Suzhou China Applied Mathematics Program Xi'an Jiaotong-Liverpool University Suzhou China Department of Computing Xi'an Jiaotong-Liverpool University Suzhou China Department of Electrical and Computer Engineering Curtin University Malaysia Miri Malaysia Sustainable Energy Technology Program Xi'an Jiaotong-Liverpool University Suzhou China

ISBN: (纸本)9781837242689

Vanadium Redox Flow Batteries (VRFB) are promising for large-scale energy storage due to their long life and environmental benefits. Accurate temperature prediction is key to optimizing VRFB performance and longevity. This study compares the performance of four machine learning models, i.e., 1D CNN, Particle Swarm Optimization - Support Vector Regressor (PSO-SVR), Decision Tree (DT), and K-Nearest Neighbors (KNN), using a publicly available dataset. Results show that KNN achieves the best results with test Root Mean Square Error (RMSE) of 0.0424 (average) and test R2 of 0.9746 (average), demonstrating strong predictive accuracy. 1D CNN, however, shows poor generalization. These findings suggest that non-parametric models like KNN and DT are highly effective for VRFB temperature prediction. © The Institution of engineering & Technology 2024.

关键词： machine learning prediction Vanadium redox flow battery

来源：评论

学校读者我要写书评

暂无评论

In situ interphase engineering for all-solid-state Li batteries: a case study on the LiNi0.5Mn1.5O4/Li0.33La0.55TiO3 composite cathode guided by ab initio calculations

引用

Journal of Materials Chemistry A 2024年第16期12卷 9438-9453页

作者： Lin, Che-An Ihrig, Martin Kung, Kuan-Chen Chen, Hsiang-Ching Finsterbusch, Martin Guillon, Olivier Lin, Shih-Kang Department of Materials Science and Engineering National Cheng Kung University Tainan70101 Taiwan Department of Chemical Engineering National Taiwan University of Science and Technology Taipei106 Taiwan Forschungszentrum Jülich GmbH Jülich52425 Germany Research 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 Core Facility Center National Cheng Kung University Tainan70101 Taiwan

The sinterability and interfacial stability issues in the composite cathode have been the main bottlenecks of oxide-based all-solid-state Li battery development. The interfacial reaction between the electrode and electrolyte plays an important role in the sinterability and interfacial stability of a composite cathode. A suitable interfacial reaction can not only improve the sinterability by providing an additional driving force for chemical bond formation, but it can also stabilize the electrode/electrolyte interface by forming interfacial reaction products which remain stable during operation of the cell. In this work, a suitable dopant that can induce the formation of the desired interphase between the LiNi0.5Mn1.5O4 cathode and Li0.33La0.55TiO3 electrolyte was obtained through ab inito computational screening. Experimental verification was carried out by field-assisted sintering technology/spark plasma sintering (FAST/SPS) for obtaining mechanically stable composite cathode pellets and heat treatment for inducing the interfacial reaction. The dopant identified by computation was proven to induce the in situ formation of a stable protective layer. A successful method of simultaneously improving sinterability and interfacial stability in an oxide-based composite cathode is demonstrated in this work. © 2024 The Royal Society of Chemistry.

关键词： Spark plasma sintering

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：