相关实验视频
Updated: Sep 15, 2025

09:04
Fabrication of VB2/Air Cells for Electrochemical Testing
Published on: August 5, 2013
12.1K
热力学设计的V3O7/V6O13异质连接通过合作式双相存储实现了高性能水性离子电池
Yanzi Lei1, Dawei Chai1, Bin Zhang1
1College of Physics Science and Technology, Guangxi Normal University, Guilin 541004, China.
Journal of colloid and interface science
|July 15, 2025
概括
研究人员开发了一种用于水性离子电池 (AZIB) 的新型V3O7/V6O13异构连接. 这种先进的正极材料提供了高容量和长期稳定性,解决了电池性能方面的关键挑战.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池 (AZIB) 在正极材料性能方面面临挑战,特别是速度能力和循环稳定性.
- 开发先进的阴极材料对于AZIBs的实际应用至关重要.
研究的目的:
- 为高性能AZIBs合成一种新的V3O7/V6O13异构连接.
- 研究用于异构结构设计的热力学控制的相变换策略.
- 为了阐明设计的异构结构中的电荷存储机制.
主要方法:
- 水热合成与低温热处理相结合.
- 通过现场相位转换制造V3O7/V6O13异质连接.
- 电化学性能测试 (容量,速度能力,循环稳定性).
- 密度函数理论 (DFT) 计算用于机械洞察力.
主要成果:
- V3O7 / V6O13异构连接在0.1 A g-1下提供了278.5 mAh g-1的高可逆容量.
- 证明了出色的速率能力,在5 A g-1时保留了163.5 mAh g-1.
- 实现了特殊的循环稳定性,在4000个循环中保持了84.8%的容量.
- DFT的计算证实了有利的界面能量和电荷再分配.
结论:
- 由于配合式双相存储机制,V3O7/V6O13异构连接表现出优越的电化学性能.
- 热力学控制相位工程是设计高性能阴极材料的有效策略.
- 这项工作为AZIB正极材料开发提供了新的见解.
相关概念视频
Voltaic/Galvanic Cells
58.5K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
58.5K
Batteries and Fuel Cells
28.0K
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...
28.0K

