相关实验视频

Updated: Jul 17, 2025

1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions

1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions

Published on: October 10, 2016

有机离子电池的稳定六三甲基平面聚合物阴极材料

Zhonghui Sun¹, Hongyan Yao, Jiabin Li¹

¹National & Local Joint Engineering Laboratory for Synthesis Technology of High Performance Polymer, Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China.

ACS applied materials & interfaces

|August 28, 2023

概括

一个新的聚合物电极,AZO-HATN-AQ,通过防止溶解,为离子电池 (LIB) 提供了更好的稳定性. 这种设计提高了循环性能和容量保留,用于下一代能源存储.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
聚合物化学聚合物化学

背景情况:

有机材料越来越多地被研究为离子电池 (LIB) 的电极.
有机电极的一个关键挑战是由于溶解在电解质中,循环稳定性差.
开发稳定的有机电极材料对于推进电池技术至关重要.

研究的目的:

为LIBs设计和制造一种新型的以联六三甲 (HATN) 为基础的聚合物 (AZO-HATN-AQ).
为了研究新聚合物电极的电化学特性和循环稳定性.
为了证明合理的聚合物结构设计提高电池性能的有效性.

主要方法:

聚合三二甲素[2,3-a:2',3'-c]氨酸 (HATNTN) 和2,6-氨酸氨酸 (DAAQ) 形成AZO-HATN-AQ.
电化学表征包括特定容量,速率能力和循环稳定性测试.
结构分析,以了解分子结构和电化学性能之间的关系.

主要成果:

AZO-HATN-AQ电极表现出丰富的氧化还原活性位点,延伸的π-结合平面形状,以及低能量的差距.
实现了高特异性容量 (240 mAh g^{-1 在0.05 A g^{-1) 和突出的速率能力 (98 mAh g^{-1 在8 A g^-1).}}}
在2000个循环后,在4 A g-1 (85.7%的容量保留) 后,120 mAh g-1的卓越循环稳定性被证明.

结论:

该AZO-HATN-AQ聚合物电极显示出优异的可溶性阻力和快速的离子传输.
在化后保持平面结构有助于卓越的循环稳定性.
聚合物电极结构的合理设计是实现高性能LIB的有效策略.

关键词:

亚聚合物是一种亚聚合物.六甲三甲甲二甲二甲二甲长周期稳定性的长周期稳定性有机阴极材料是有机阴极材料.储存机制储存机制储存机制

更多相关视频

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

相关概念视频

Aromatic Hydrocarbon Cations: Structural Overview

Aromatic Hydrocarbon Cations: Structural Overview

Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...

Thermal and Photochemical Electrocyclic Reactions: Overview

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.