• Title/Summary/Keyword: Li reduction

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Lithium/Sulfur Secondary Batteries: A Review

  • Zhao, Xiaohui;Cheruvally, Gouri;Kim, Changhyeon;Cho, Kwon-Koo;Ahn, Hyo-Jun;Kim, Ki-Won;Ahn, Jou-Hyeon
    • Journal of Electrochemical Science and Technology
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    • v.7 no.2
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    • pp.97-114
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    • 2016

  • Lithium batteries based on elemental sulfur as the cathode-active material capture great attraction due to the high theoretical capacity, easy availability, low cost and non-toxicity of sulfur. Although lithium/sulfur (Li/S) primary cells were known much earlier, the interest in developing Li/S secondary batteries that can deliver high energy and high power was actively pursued since early 1990’s. A lot of technical challenges including the low conductivity of sulfur, dissolution of sulfur-reduction products in the electrolyte leading to their migration away from the cathode, and deposition of solid reaction products on cathode matrix had to be tackled to realize a high and stable performance from rechargeable Li/S cells. This article presents briefly an overview of the studies pertaining to the different aspects of Li/S batteries including those that deal with the sulfur electrode, electrolytes, lithium anode and configuration of the batteries.

  • https://doi.org/10.5229/JECST.2016.7.2.97 인용 PDF KSCI KPUBS HTML

Effect of irradiation temperature on the nanoindentation behavior of P92 steel with thermomechanical treatment

  • Huang, Xi;Shen, Yinzhong;Li, Qingshan;Li, Xiaoyan;Zhan, Zixiong;Li, Guang;Li, Zhenhe
    • Nuclear Engineering and Technology
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    • v.54 no.7
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    • pp.2408-2417
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    • 2022

  • The nanoindentation behavior of P92 steel with thermomechanical treatment under 3.5 MeV Fe13+ ion irradiation at room temperature, 400 and 700 ℃ was investigated. Pop-in behavior is observed for all the samples with and without irradiation at room temperature, while the temperature dependence of pop-in behavior is only observed in irradiated samples. The average load and penetration depth at the onset of pop-in increase as the irradiation temperature increases, in line with the results of the maximum shear stress. Irradiation induced hardening is exhibited for all irradiated samples, but there is a significant reduction in the hardness of sample irradiated at 700 ℃ in comparison to the samples irradiated at room temperature and 400 ℃. The ratio of hardness to elastic modulus for all samples decreases with increasing penetration depth except for samples at 700 ℃. With the increasing of irradiation temperature, the ratio of the irreversible work to the total work gradually decreases. In contrast, it increases for samples without irradiation.

  • https://doi.org/10.1016/j.net.2022.02.006 인용 PDF KSCI

Synthesis of Several heterocyclic Steroides. (이환성 Steroid의 합성)

  • 이성규
    • YAKHAK HOEJI
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    • v.7 no.4
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    • pp.98-99
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    • 1963

  • Compound III and IV were formed from I and II with $NH_{2}(CH_{2})_{3}NH_{2}$ respectively. Reduction of I with $LiAlH_{4}$ bollowed by $PoCl_{3}$ treatment affored VIII. Compound VI which was asumed by IR-data were obtained by treatment of $NH_{2}NH_{2}$ upon I or V.

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