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  • The Electrochemical Society  (33)
  • 1
    Online Resource
    Online Resource
    Optical Monitoring of Capacitance in Hemispherical Grain Polycrystalline Silicon for Advanced Dynamic Random Access Memory Application
    The Electrochemical Society ; 1998
    In:  Journal of The Electrochemical Society Vol. 145, No. 11 ( 1998-11-01), p. 3935-3940
    Details
    In: Journal of The Electrochemical Society, The Electrochemical Society, Vol. 145, No. 11 ( 1998-11-01), p. 3935-3940
    Type of Medium: Online Resource
    ISSN: 0013-4651 , 1945-7111
    URL: Article
    DOI: 10.1149/1.1838895
    RVK:
    VA 4000
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 1998
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  • 2
    Online Resource
    Online Resource
    Nano-sized LiCoO2 Manufactured in a Single Synthetic Step Using United Eutectic Self-mixing Method
    The Electrochemical Society ; 2006
    In:  ECS Meeting Abstracts Vol. MA2005-03, No. 1 ( 2006-02-22), p. 17-17
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2005-03, No. 1 ( 2006-02-22), p. 17-17
    Abstract: Abstract not Available.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2005-03/1/17
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2006
    detail.hit.zdb_id: 2438749-6
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  • 3
    Online Resource
    Online Resource
    Photothermal Lasing-Assisted Synthesis of 2D Metal-Organic Framework and Its Application to Memory Device
    The Electrochemical Society ; 2022
    In:  ECS Meeting Abstracts Vol. MA2022-02, No. 36 ( 2022-10-09), p. 1332-1332
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2022-02, No. 36 ( 2022-10-09), p. 1332-1332
    Abstract: Resistive random access memory (RRAM) has attracted as candidate in the next generation of non-volatile memory device due to its low power consumption, fast write/erase speed, and high CMOS compatibility 1–3 . At present, among various materials, metal-organic frameworks (MOFs) are significantly attracting attention as promising materials for data storage applications due to their advantages of highly ordered pores, large surface area, tunable structure, and subsequent controllable function 4–6 . However, it is difficult to apply MOF to RRAM, because synthesis time is generally long and additional step is needed to form the MOF into a thin film. Therefore, there is a need for a new method for synthesizing MOF in the form of a thin film simply and fast. In this work, we simply and fast synthesized a 2D MOF nanosheets, Cu(BDC), in the form of thin film using laser process. The dissolved ligand (terephthalic acid) in the N,N-dimethylformamide (DMF) is dropped on the Cu thin film and then irradiate the laser beam on the active spot. Photon energy of laser is absorbed in the Cu metal film, which generate the photothermal effect. This photothermal effect oxides the Cu atom into Cu ion and the oxidized Cu ions are used as metal source of Cu(BDC). This process simply and quickly transforms the Cu thin film into a Cu(BDC) thin film that can act an active layer of RRAM. The suggested method not only is finished in minutes, but also does not needed additional process step of transferring the MOF onto the thin film. The fabricated 2D MOF based-RRAM shows a typical bipolar switching behavior. Our device also exhibits a high on/off ratio ( 〉 10 3 ), low set/reset voltages (1 V 〉 in SET and -0.5 V 〉 in RESET), and long retention (1×10 4 s). Therefore, our research suggests a simple and rapid synthesis method of MOFs in the form of a thin film by using laser process and demonstrates applicability 2D MOF fabricated by laser process for the non-volatile memory device. Figure Caption Figure (a) Schematics of synthesis of metal-organic frameworks (MOFs) using laser process. (b) Scanning electron microscopy (SEM) image of Cu(BDC) thin film surface. (c) Transmission electron microscopy (TEM) image of single Cu(BDC) nanosheet. (d) Current-voltage (I-V) curve for 2D MOF based-RRAM device. (e) Retention tests of 2D MOF based-RRAM device. Figure 1
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2022-02361332mtgabs
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2022
    detail.hit.zdb_id: 2438749-6
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  • 4
    Online Resource
    Online Resource
    Bicontinuous-Structured Elastomeric Electrolytes for High-Energy Solid-State Lithium-Metal Batteries
    The Electrochemical Society ; 2022
    In:  ECS Meeting Abstracts Vol. MA2022-02, No. 4 ( 2022-10-09), p. 367-367
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2022-02, No. 4 ( 2022-10-09), p. 367-367
    Abstract: The use of lithium (Li) metal anodes in solid-state batteries is a strong strategy as a next-generation battery technology for surpassing the energy density and safety of conventional Li-ion batteries. However, in practice, current solid-state electrolytes have been limited to realize Li metal batteries due to their insufficient electrochemical and mechanical properties. Here, we design a new class of elastomeric electrolytes having a 3D interconnected plastic-crystal phase within the elastomer matrix—plastic crystal-embedded elastomer electrolytes (PCEEs). 1 To elucidate the effects of structural changes in PCEEs on Li-ion transport property, mechanical elasticity, and electrochemical performance, we investigate various phase-separated structures of PCEEs by adjusting each phase’s volume ratio. Among these structures, we reveal that bicontinuous-structured PCEE, consisting of an equal volume ratio of elastomer to plastic-crystal phase, is well-balanced to develop the efficient ion-conducting, plastic-crystal pathways within a mechanically robust, cross-linked elastomer matrix. Hence, this optimal PCEE shows a combination of high ionic conductivity ( 〉 10 -3 S cm -1 ) at ambient temperature, high Li-ion transference number ( 〉 0.70), and good mechanical resilience (elongation at break ≈ 300%). A full cell configured with the optimized PCEE, a limited Li source, and a high loading LiNi 0.83 Mn 0.6 Co 1.1 O 2 cathode delivers a high energy density exceeding 430 Wh kg anode+cathode+electrolyte -1 . Understanding the structure-property-electrochemical performance relationship of PCEE through structural control can form the basis of structure-controlled elastomeric electrolytes, holding substantial promise in various electrochemical energy storage systems. References 1. Lee, M. J.; Han, J.; Lee, K.; Lee, Y. J.; Kim, B. G.; Jung, K.-N; Kim, B. J.; Lee, S. W. Elastomeric electrolytes for high-energy solid-state lithium batteries. Nature 2022 , 601, 217-222.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2022-024367mtgabs
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2022
    detail.hit.zdb_id: 2438749-6
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  • 5
    Online Resource
    Online Resource
    Fallen Leaves-Based Femtosecond-Laser-Induced-Graphene for High-Performance Flexible Micro-Supercapacitors
    The Electrochemical Society ; 2023
    In:  ECS Meeting Abstracts Vol. MA2023-01, No. 7 ( 2023-08-28), p. 2804-2804
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2023-01, No. 7 ( 2023-08-28), p. 2804-2804
    Abstract: The rapid growth of wearable and portable electronics has led to the development of microscale energy storage devices. Among these devices, microsupercapacitors (MSCs) have emerged as promising flexible energy storage devices owing to their high power density, fast charge/discharge rate, and long-term cycling stability [1-4]. Flexible MSCs were mainly made from non-biodegradable synthetic polymers, resulting a massive electronic waste. Moreover, complex manufacturing processes increase production costs. To address these challenges, we present a novel approach to fabricate green and flexible MSCs using naturally fallen leaves as a carbon precursor [5]. Our method utilize ultrashort laser pulses to create highly conductive and intrinsically flexible microelectrodes without any additional materials. The laser-induced-graphene is formed on leaves in ambient air, resulting in hierarchically porous graphene with 3D mesoporous few-layer structures. Our green flexible MSCs demonstrated excellent electrochemical performance and were confirmed to work as a power sources for various applications such as LEDs and thermometers. Furthermore, our approach offers a low-cost, renewable, and environmentally friendly alternative to traditional manufacturing processes. Overall, our green and flexible MSCs have significant potential for use in energy-storage devices for flexible/wearable electronics. References [1] M. F. El-Kady, R. B. Kaner, Nat. Commun . 4, 1475 (2013) . [2] S.-K. Hyeong, M. Park, S.-I. Kim, S. Park, K.-H. Choi, M. Im, N. Kim, T.-W. Kim, S. Lee, J.-W. Park, S. Bae, J.-H. Lee, S.-K. Lee, Adv. Mater. Technol . 7, 2101105 (2022) [3] D. Pech, M. Brunet, H. Durou, P. Huang, V. Mochalin, Y. Gogotsi, P. -L. Taberna, P. Simon, at. Nanotech . 5, 651 (2010) . [4] Y. Lee, J. Lim, Y. Cho, H. Lee, S. Park, G.-W. Lee, C.-Y. Yoo, S. Park, V. Murukeshan, S. Kim, Y.-J. Kim, H. Yoon, Chem. Eng. J. 386, 123972 (2020) [5] T. –S. Le, Y. Lee, H. Nam, K. Jang, D. Yang, B. Kim, K. Yim, S.-W. Kim, H. Yoon, Y.-J. Kim, Adv. Funct. Mater . 32, 2107768 (2022)
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2023-0172804mtgabs
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2023
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  • 6
    Online Resource
    Online Resource
    Development of Tungsten Trioxide Using Pulse and Continuous Electrodeposition and Its Properties in Electrochromic Devices
    The Electrochemical Society ; 2019
    In:  Journal of The Electrochemical Society Vol. 166, No. 4 ( 2019), p. D86-D92
    Details
    In: Journal of The Electrochemical Society, The Electrochemical Society, Vol. 166, No. 4 ( 2019), p. D86-D92
    Type of Medium: Online Resource
    ISSN: 0013-4651 , 1945-7111
    URL: Article
    DOI: 10.1149/2.0271904jes
    RVK:
    VA 4000
    Language: English
    Publisher: The Electrochemical Society
    Publication Date: 2019
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  • 7
    Online Resource
    Online Resource
    Effects of Carboxylated Polythiophenes in Fe 3 O 4 Li-Ion Battery Anodes
    The Electrochemical Society ; 2017
    In:  ECS Meeting Abstracts Vol. MA2017-02, No. 4 ( 2017-09-01), p. 315-315
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2017-02, No. 4 ( 2017-09-01), p. 315-315
    Abstract: The high energy/power density of Li-ion batteries elicits intensive research efforts related to high capacity anode materials. The main obstacles which retard the practical employment of high-capacity electrochemically active particles including Si, Sn, metal oxide and their derivatives, stem from large volume changes associated with Li insertion/extraction and the resultant electrical contact loss, thereby leading to poor cycling performance. Efforts have been made to circumvent the breakdown of electron pathways through the introduction of electrical conducting functionalities to the surface of active materials, such as carbon coatings and conductive polymeric binders, or the fabrication of a stable battery anode with electrically inactive polymeric binders that enable the system to maintain its integrity. These approaches are reasonably effective, however, incorporation of a porous entity which helps ion transport, into a composite electrode is also essential for improved performance. In principle, electrochemical reactions that occur within the electrode, reveal the intrinsic energy capacity when a Li ion encounters an electron inside an active site. Electron and ion transport are both critical factors to determine the internal resistance of the electrodes, which in turn influences their electrochemical performance. Here we present how to improve both electronic and ionic transport in Li-ion battery electrodes using conjugated polymers. The approach includes poly[3-(potassium-4-butanoate)thiophene] (PPBT) — a water-soluble, carboxylate substituted polythiophene — as a binder component, and polyethylene glycol (PEG) as a surface coating on active material, namely, Fe 3 O 4 nanoparticles. Additionally, carbon nanotubes (CNTs) are considered for use as the conducting networks to facilitate design of a light-weight, flexible web electrode. To enhance the electronic conduction in the electrodes, connection between active materials (PEG- Fe 3 O 4 ) and conducting agents (or CNTs) through binding components is of importance. PEG coating and carboxylated polythiophenes play an important role in dispersing the Fe 3 O 4 nanoparticles and conducting agents (or CNTs), respectively, in a water medium, which allow for well-developed and interconnected electrode structures. Furthermore, carboxylated polythiophenes (e.g. PPBT) can boost electronic conduction, based on their high conducting properties and through electrochemical doping during electrochemical testing. The presence of carboxylic moieties on the side chain of polythiophenes such as PPBT could facilitate the formation of stable electrodes via chemical interactions between PPBT moieties (COO-) and the Fe 3 O 4 surface (–OH). The results will show that this methodical consideration of both ion and electron transport through introduction of a carboxylated PPBT component, can remarkably enhance the performance of Fe 3 O 4 based high-capacity anodes.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2017-02/4/315
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2017
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  • 8
    Online Resource
    Online Resource
    Endpoint Detection in Plasma Etching Using Principal Component Analysis and Expanded Hidden Markov Model
    The Electrochemical Society ; 2011
    In:  ECS Transactions Vol. 34, No. 1 ( 2011-03-21), p. 943-948
    Details
    In: ECS Transactions, The Electrochemical Society, Vol. 34, No. 1 ( 2011-03-21), p. 943-948
    Abstract: In current semiconductor manufacturing, plasma processes such as etch and CVD take the portion at least 40% throughout of integration processes. As the feature size of integrated circuit (IC) devices continuously shrinks, detecting endpoint in low open area plasma etch process becomes more difficult. To solve this problem, a combination of Principal Component Analysis (PCA) and Expanded Hidden Markov model (eHMM) technique is applied to optical emission spectroscopy (OES) signals. Selected patterns are used in PCA, which reduces dimension of the raw data and increases gap between classes. The eHMM is employed to detect endpoint using output of PCA. The eHMM combines the semi-Markov model to enable an arbitrary distribution on the location of the change-point and the segmental HMM to model the configuration in each segment. After modeling using eHMM, real-time OES data were fed to this model to detect endpoint.
    Type of Medium: Online Resource
    ISSN: 1938-5862 , 1938-6737
    URL: Article
    DOI: 10.1149/1.3567696
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2011
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  • 9
    Online Resource
    Online Resource
    Significant Improvement of AlF 3 -Coated LiCoO 2 Cathode in High Voltage Cycling
    The Electrochemical Society ; 2006
    In:  ECS Meeting Abstracts Vol. MA2006-02, No. 5 ( 2006-06-30), p. 359-359
    Details
    In: ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2006-02, No. 5 ( 2006-06-30), p. 359-359
    Abstract: Abstract not Available.
    Type of Medium: Online Resource
    ISSN: 2151-2043
    URL: Article
    DOI: 10.1149/MA2006-02/5/359
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2006
    detail.hit.zdb_id: 2438749-6
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  • 10
    Online Resource
    Online Resource
    Arc Detection in Plasma Etching Using Fuzzy Model and Dempster-Shafer Theory
    The Electrochemical Society ; 2012
    In:  ECS Transactions Vol. 44, No. 1 ( 2012-03-16), p. 1069-1074
    Details
    In: ECS Transactions, The Electrochemical Society, Vol. 44, No. 1 ( 2012-03-16), p. 1069-1074
    Abstract: In current semiconductor manufacturing process, plasma processes such as etch and CVD take the portion at least 40% throughout the integration processes. In etch and CVD using plasma, particles created during processes produce abnormal discharge with relatively large energy and light. This energy must be detected because this energy causes damage directly or indirectly to wafer. Using Optical Emission Spectroscopy (OES), it is possible to detect status changes of plasma and also to find arc generation. The OES is often used for analysis of plasma physics and chemistry in real-time. The OES system gathers a series of optical emission intensity of the plasma in the chamber. But OES has large amount data because of using the full range of wavelength. Therefore, it takes a long time to process the data. To solve this problem, a new method is proposed using Fuzzy model and Dempster-Shafer theory by utilizing equipment data from matching network. Six data from matching network such as Cap position, RF reflective powers, are used to make Fuzzy model for arc detection. Fuzzy model normalizes these matching network data between 0 and 1. Output of Fuzzy model is used as a reference to detect abnormal data from on-line data. Six matching network parameter are compared at the same time and Dempster-Shafer theory is used to make a decision whether current state is in arc state or not. The results show that the proposed method detects arc point accurately.
    Type of Medium: Online Resource
    ISSN: 1938-5862 , 1938-6737
    URL: Article
    DOI: 10.1149/1.3694430
    Language: Unknown
    Publisher: The Electrochemical Society
    Publication Date: 2012
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