相关实验视频
Updated: Feb 26, 2026

09:04
Fabrication of VB2/Air Cells for Electrochemical Testing
Published on: August 5, 2013
12.5K
三价离子使化学稳定水合瓦纳氧化物阴极用于耐用水性电池
Yiwen Xiao1, Chaoqiong Zhu1, Jiaqi Li1
1School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China.
ACS applied materials & interfaces
|February 25, 2026
概括
研究人员开发了一种新的阴极材料,In-VO,用于水性电池 (AZB). 这种材料增强了结构稳定性和离子扩散,提高了电池性能和能源存储应用的安全性.
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:
- 水性电池 (AZB) 提供安全和环保的储能.
- 阴极材料的不稳定性和缓慢的离子动力学限制了AZB的性能.
研究的目的:
- 为AZBs设计一种稳定高效的阴极材料.
- 为了克服传统的AZB阴极材料的局限性.
主要方法:
- 通过将印 (In3+) 离子纳入化氧化物中,合成In-VO.
- 电化学表征包括循环稳定性和速率能力测试.
- 对结构稳定性和离子扩散机制的分析.
主要成果:
- 在0.1 A g-1下,In-VO阴极的特定容量为398.7 mAh g-1.
- 高循环稳定性,在0.2A g-1.的100个循环中保持92%的容量保留.
- 在5.0 A g-1下,具有290.5 mAh g-1的优异速率能力.
- 抑制瓦纳溶解和寄生反应.
结论:
- 预间接的In3+离子增强了氧化瓦纳阴极的层间距和结构稳定性.
- In-VO是高性能水性电池的一个有前途的阴极材料.
- 这一战略为开发先进的AZB阴极提供了一条途径.
相关概念视频
Batteries and Fuel Cells
31.3K
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...
31.3K
Properties of Transition Metals
30.3K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
30.3K
Formation of Complex Ions
26.4K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
26.4K

