相关实验视频

Updated: Jun 7, 2025

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

生态友好型高性能对称全COF/石墨烯水性离子电池

Pengshu Yi^1,2, Zhiheng Li^1,3, Longli Ma^1,2

¹Institute of Special Materials and Technology, Fudan University, Shanghai, 200433, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|November 15, 2024

概括

高性能水性对称全有机电池 (SAOB) 是使用一种新的共价有机框架 (COF) 和石墨烯开发的. 这些环保电池表现出卓越的循环寿命和速率性能,为更绿色的可充电未来.

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
可持续能源可持续能源

背景情况:

开发高性能水性对称全有机电池 (SAOB) 对于可持续的能源储存至关重要.
由于电极材料的限制,当前的SAOB面临速度能力和循环稳定性的限制.

研究的目的:

为高性能SAOB设计和合成一种新的共价有机框架 (COF).
为了研究 Zn²⁺ 和 H⁺ 在温和的水性电解质中的共存.
组装和评估全COF/石墨烯电池,以提高电化学性能.

主要方法:

设计和合成一种富含C-N和C-O功能的新型COF材料.
将COF材料与石墨烯结合起来,用于制造电极.
组装全COF/石墨烯电池,用于在温和水性电解质中进行电化学测试.
评估速度能力,循环稳定性和能量密度.

主要成果:

新型COF材料呈现出延伸的多孔结构和丰富的活性位点.
全COF/石墨烯电池显示了Zn²⁺和H⁺的同时存储.
SAOB 实现了卓越的循环寿命 (超过 15,000 个循环) 和高速率性能 (80 mAh g-1 在 5 A g-1).
分子水平的C-O修饰增强了电子外位化和H+存储能力.

结论:

开发的基于COF的电极材料显著提高了SAOB的性能.
这项工作为高性能水性有机电池铺平了道路.
这些发现有助于推进环保的电化学储能系统.

关键词:

水性电池的水性电池是一个水性电池.共价有机框架是共价有机框架.高利率的业绩表现高.有机阴极是有机阴极的组成部分.一个对称的全有机电池.

更多相关视频

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

Published on: February 5, 2019

Fabrication of VB2/Air Cells for Electrochemical Testing

Fabrication of VB2/Air Cells for Electrochemical Testing

Published on: August 5, 2013

相关概念视频

Batteries and Fuel Cells

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...

Standard Electrode Potentials

Standard Electrode Potentials

On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...