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Stable operation of highly loaded pure Si-Fe anode under ambient pressure via carboxy silane-directed robust solid electrolyte interphase

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Journal of Energy Chemistry 2024年第7期94卷 568-576页

作者： Guntae Lim Dong Guk Kang Hyeon Gyu Lee Yen Hai Thi Tran Kihun An junghyun Choi Kwang Chul Roh Do Youb kim Seung-Wan Song Department of Chemical Engineering&Applied Chemistry Chungnam National University Daejeon 34134Republic of Korea Energy Storage Materials Center Korea Institute of Ceramic Engineering&TechnologyJinju 52851Republic of Korea Advanced Energy Materials Research Center Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea

Incorporation of higher content Si anode material beyond 5 wt% to Li-ion batteries(LIBs)is challenging,owing to large volume change,swelling,and solid electrolyte interphase(SEI)instability ***,a strategy of diacetoxydimethylsilane(DAMS)additive-directed SEI stabilization is proposed for a stable operation of Si-0.33FeSi_(2)(named as Si-Fe)anode without graphite,which provides siloxane inorganics and organics enrichment that compensate insufficient passivation of fluoroethylene carbonate(FEC)additive and reduce a dependence on *** stable cycling performance of highly loaded(3.5 mA h cm^(-2))pure Si-Fe anode is achieved with 2 wt%DAMS combined with 9 wt%FEC additives under ambient pressure,yielding high capacity 1270 mA h g^(-1)at 0.5 C and significantly improved capacity retention of 81% after 100 cycles,whereas short circuit and rapid capacity fade occur with FEC only ***-directed robust SEI layer dramatically suppresses swelling and particles crossover through separator,and therefore prevents short circuit,demonstrating a possible operation of pure Si or Sidominant anodes in the next-generation high-energy-density and safe LIBs.

关键词： High-energy Li-ion battery Pure Si-Fe anode without graphite Silane additive SEI layer Suppressed swelling

饰品设计在中国的市场发展方向研究 ——基于“Charms手链设计案例分析”

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饰品设计在中国的市场发展方向研究 ——基于“Charms手链设计案...

作者：金贞贤(kim junghyun) 东华大学

学位级别：硕士

随着经济的不断发展,中国消费者的消费水平越来越高。社会和经济的发展提高了人们的生活水平,也影响到了服装产业的发展。现在国内的服装产业已经呈现出饱和状态,但是随着消费者要求的不断提升,整体配饰包括首饰部分的销量需求都有所提... 详细信息

随着经济的不断发展,中国消费者的消费水平越来越高。社会和经济的发展提高了人们的生活水平,也影响到了服装产业的发展。现在国内的服装产业已经呈现出饱和状态,但是随着消费者要求的不断提升,整体配饰包括首饰部分的销量需求都有所提高。随着服装产业的发展,国际时尚饰品品牌也进入了中国市场。虽然在中国国内市场上包括老字号的金银品牌已经很多了,但国际品牌也为了中国的消费群体在设计上加入了中国的元素。其实中国市场的优点是市场的规模很大。但是挑战中国市场之前要考虑到中国地理和民族文化的封闭性。所以,中国市场可以分为两种类型,一种是封闭性保守,另外一种就是快速的变化。本文以进入中国国内市场的外国饰品品牌和国内品牌的设计Charms手链的案例分析研究,在分析Charms手链设计,按设计主题的内容、尺寸和材质这三个方面来进行研究。研究的过程中,集中到中国文化元素是怎么影响到设计主题的,还有,最近在国内消费者的需求和中国市场上的设计方向之间的关系方面,提出了在中国市场发展方向的方案。

关键词： Charms手链中国元素饰品设计中国市场

Characterizing cellular mechanical phenotypes with mechanonode-pore sensing

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Microsystems & Nanoengineering 2018年第1期4卷 438-449页

作者： junghyun kim Sewoon Han Andy Lei Masaru Miyano Jessica Bloom Vasudha Srivastava Martha R.Stampfer Zev J.Gartner Mark A.LaBarge Lydia L.Sohn Department of Mechanical Engineering University of California at BerkeleyBerkeleyCA 94720-1740USA Department of Bioengineering University of California at BerkeleyBerkeleyCA 94720-1762USA Department of Population Sciences Beckman Research InstituteCity of HopeDuarteCA 91010USA Department of Pharmaceutical Chemistry University of CaliforniaSan FranciscoSan FranciscoCA 94143USA Biological Systems and Engineering Division Lawrence Berkeley National LaboratoryCA 94720USA Graduate Program in Bioengineering University of CaliforniaBerkeleyand University of CaliforniaSan FranciscoBerkeleyCA 94720USA

The mechanical properties of cells change with their differentiation,chronological age,and malignant ***,these properties may be useful label-free biomarkers of various functional or clinically relevant cell ***,we demonstrate mechano-node-pore sensing(mechano-NPS),a multi-parametric single-cell-analysis method that utilizes a four-terminal measurement of the current across a microfluidic channel to quantify simultaneously cell diameter,resistance to compressive deformation,transverse deformation under constant strain,and recovery time after *** define a new parameter,the whole-cell deformability index(wCDI),which provides a quantitative mechanical metric of the resistance to compressive deformation that can be used to discriminate among different cell *** wCDI and the transverse deformation under constant strain show malignant MCF-7 and A549 cell lines are mechanically distinct from non-malignant,MCF-10A and BEAS-2B cell lines,and distinguishes between cells treated or untreated with cytoskeleton-perturbing small *** categorize cell recovery time,ΔT_(r),as instantaneous(ΔTr~0 ms),transient(ΔT_(r)≤40 ms),or prolonged(ΔT_(r)>40 ms),and show that the composition of recovery types,which is a consequence of changes in cytoskeletal organization,correlates with cellular *** the wCDI and cell-recovery time,mechano-NPS discriminates between sub-lineages of normal primary human mammary epithelial cells with accuracy comparable to flow cytometry,but without antibody ***-NPS identifies mechanical phenotypes that distinguishes lineage,chronological age,and stage of malignant progression in human epithelial cells.

关键词： microfluidics mechanical phenotyping node-pore sensing biosensors label-free

Anti-inflammatory Effects of Sanguisorbae Radix on Contact Dermatitis Induced by Dinitrofluorobenzene in Mice

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Chinese Journal of Integrative Medicine 2020年第9期26卷 688-693页

作者： Suzy Jo junghyun Ryu Hanna kim Miyoung kim Mi Heon Ryu Hyungwoo kim Su-ln Cho School of Korean Medicine Pusan National UniversityPusan(626-870)Republic of Korea School of Dentistry Pusan National UniversityPusan(626-870)Republic of Korea

Objective:To investigate the anti-inflammatory effects of Sanguisorbae Radix on contact dermatitis(CD).Methods:Mice were sensitized by painting 30μL of 1-fluoro-2,4-dinitrofluorobenzene(DNFB)onto each ear for 3 *** days later,mice were challenged by painting with 50μL of DNFB onto the shaved dorsum every 2 *** Radix methanol extract(MESR)was applied onto the shaved dorsum every 2 *** effects of MESR on skin thickness,skin weights,histopathological changes,skin lesions and cytokine production in DNFB-induced CD mice were investigated,as well as its effects on body weights and spleen/body weight ***:Topical application of MESR effectively inhibited enlargement of skin thickness and weight(P<0.05).MESR treatment also inhibited hyperplasia,spongiosis and immune cell infiltration induced by DNFB in inflamed tissues and improved lesions on dorsum skin in CD ***,treatment with MESR suppressed the increase in the levels of tumor necrosis factor α(TNF-α,P<0.01)and interferonγ(IFN-γ,P<0.05),***,MESR had no effect on body weight gain or spleen/body weight ***:These data suggest that MESR acts as an anti-inflammatory agent that decreases the production of TNF-α and IFN-γ,resulting in reductions of skin lesions and histopathological changes in inflamed skin tissues.

关键词： Sanguisorba officinalis skin diseases herbal Chinese materia medica

Liquid crystal between two distributed Bragg reflectors enables multispectral small-pitch spatial light modulator

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Light(Science & Applications) 2022年第8期11卷 1643-1645页

作者： junghyun Park Kanghee Won Young kim Advanced Sensor Lab Device Research CenterSamsung Advanced Institute of TechnologySuwonRepublic of Korea

The ability of controlling the phase of light at the subwavelength scale can be a game-changer due to its extraordinally wide angle-range in the wavefront shaping. By combining two conventional material and configurat... 详细信息

关键词： crystal enable light

AOP event manager in open service gateway

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重庆邮电大学学报（自然科学版） 2007年第3期19卷 335-338页

作者： Intae kim Unkee kim Keewook Rim junghyun Lee Department of Computer Science and Information Engineering Inha University Department of Computer and Information Science Sun Moon University

The Open Service Gateway Initiative (OSGi) has played an important role in ubiquitous environments that support interoperability among embedded devices, such as home appliances and network devices. However, the OSGi does not have a common event mechanism yet, and it is difficult to communicate among services asynchronously. In the present work, a common event manager, Aspect-Oriented Event Manager (AOEM), was designed on an OSGi framework. AOEM supports services to generate and provide notification of events. This paper presents the implementation of AOEM as an OSGi bundle with AspectJ. The experiment on transferring between device service and application service demonstrate that AOEM provides good abstraction of the services and convenience.

关键词：开放式网关框架视点定向事件管理器设计驱动程序 AOP

Design of a 3-tier smart middleware system for ubiquitous sensor networks

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重庆邮电大学学报（自然科学版） 2007年第3期19卷 367-371页

作者： Taegan kim Jaeho Sim Keewook Rim junghyun Lee Department of Computer Science & Information Engineering Inha University Department of Information & Computer Science Sunmoon University

As ubiquitous sensor networks (USN) technologies and its middleware are still at its early stages, the system of the USN relies on the middleware and applications. The past sensor networks are assumed to be designed for specific applications, having data communication protocols tightly coupled to applications. To avoid these problems, several kinds of USN middleware have been researched and developed. However, most middleware of USN are still restricted by its own infrastructure so far. This paper proposes appropriate 3 tier Smart Middleware System (3SMS) for USN.

关键词：开放式网关三层中间件系统设计传感器网络 UPnP

Three-dimensional beaming of surface plasmon polaritons generated by subwavelength metallic hole

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Three-dimensional beaming of surface plasmon polaritons gene...

2007亚洲光电子会议信息光学与光子学技术分会场

作者： Hwi kim junghyun Park Byoungho Lee National Creative Research Center for Active Plasmonics Applications Systems Inter-University Semiconductor Research Center and School of Electrical Engineering Seoul National University Gwanak-Gu Sillim-Dong Seoul 151-744 Korea National Creative Research Center for Active Plasmonics Applications Systems Inter-University Semiconductor Research Center and School of Electrical Engineering Seoul National University Gwanak-Gu Sillim-Dong Seoul 151-744 Korea National Creative Research Center for Active Plasmonics Applications Systems Inter-University Semiconductor Research Center and School of Electrical Engineering Seoul National University Gwanak-Gu Sillim-Dong Seoul 151-744 Korea

Diffraction of optical field by subwavelength metallic hole is analyzed with the rigorous coupled wave analysis. The surface plasmon polaritons generated in this diffraction process can be coupled to directional beam-like radiation modes by circular surface grating structures. A simple holographic grating design equation is proposed for realizing various beaming of surface plasmon polaritons. The designed grating structures for on-axis beaming and Bessel-like beaming are demonstrated with three-dimensional electromagnetic field visualization. We discuss several interesting physical features in the diffractive beaming of surface plasmon polaritons by circular surface grating structures.

关键词： Surface plasmon polariton metallic subwavelength hole holographic grating design equation diffractive beaming

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电动汽车充电站

设计 2021年第12期34卷 9-9页

作者： Taewon Hong Donghyun kim junghyun Cho Jinyoung kim Hyundai Motor Corporation Citrus Design

现代汽车集团正在为以人类为中心的出行新纪元做准备。它的设计中心开发了E-PIT超快速充电器,它通过解决通常困扰EV充电器的几个严重问题,极大地改善了用户体验:1)笨重的电缆2)复杂的操作和服务使用3)充电状态不清楚4)卫生(在大流行的... 详细信息

现代汽车集团正在为以人类为中心的出行新纪元做准备。它的设计中心开发了E-PIT超快速充电器,它通过解决通常困扰EV充电器的几个严重问题,极大地改善了用户体验:1)笨重的电缆2)复杂的操作和服务使用3)充电状态不清楚4)卫生(在大流行的情况下尤其重要)5)生产和维护。

关键词：电动汽车充电站充电状态快速充电器用户体验电缆新纪元