相关实验视频

Updated: Jul 30, 2026

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
12:28

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

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结合的基于甲的半孔共价有机框架,用于高效的阳极储存

Rong Jiang1, Xiaoyang Wang2, Qianjun Zhi2

  • 1State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)
|December 23, 2024
PubMed
概括

新的基于氨酸的共价有机框架 (COFs) 为离子电池 (LIBs) 提供了增强的性能. 这些材料提供了高容量和稳定性,解决了LIBs当前有机阳极技术的关键局限性.

关键词:
美国的LIBs是LIBs.阳极材料是一种阳极材料.共价有机框架是共价有机框架.储能储能是一种储能.这是一种phthalocyanine.

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Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

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Structure of Conjugated Dienes

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Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
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Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
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