相关实验视频

Updated: Jan 16, 2026

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

对于离子电池的可逆Mn基阴极的离子潜力引导化物工程

Shunli He^1,2,3,4, Robert Scott Young^2,5, Xing Shen^1,3,6

¹College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, P. R. China.

|September 26, 2025

概括

一个新的战略使用离子潜力引导的金属化物工程来稳定离子电池 (SIB) 的基阴极,提高性能和寿命.

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
固态化学固态化学

背景情况:

基于的分层氧化物对离子电池 (SIB) 是有前途的,因为其容量大,成本低.
结构不稳定性和Mn3+的Jahn-Teller扭曲阻碍了它们的实际应用.

研究的目的:

为SIBs开发一种提高P2型Mn基层氧化物结构稳定性和电化学性能的策略.
为了应对结构不稳定和Jahn-Teller扭曲在Mn基阴极中的挑战.

主要方法:

通过将AlF3和过渡金属空缺纳入P2型层氧化物,以离子电位引导的金属化物工程.
多尺度表征和密度函数理论 (DFT) 的计算.
电化学性能测试 (电压,容量,循环稳定性).

主要成果:

双站点调整策略提高了总离子潜力,增强了层间稳定性并抑制了Jahn-Teller效应.
观察到一种可逆的固体溶液Na+ (de) 间隔机制,其晶格应变微不足道,并抑制了Mn3+形成.
与原始材料相比,优化的阴极实现了更高的平均电压 (≈3.60 V),可逆容量 (134 mA h g-1),以及更好的循环稳定性 (100 个循环后保持 83%).

结论:

离子电位引导的AlF3整合是一种强大而可扩展的策略,用于设计下一代SIB的高性能阴极.
这种方法成功地提高了结构完整性和电化学性能,克服了传统的基材料的局限性.

关键词:

基于Mn的P2型分层阴极.高电压的高电压的高电压离子潜力工程离子潜力工程金属化物兴奋剂的使用方法可逆的阴离子/离子氧化还原.离子电池离子电池

更多相关视频

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

Construction and Testing of Coin Cells of Lithium Ion Batteries

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

相关概念视频

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.

Electrolysis

Electrolysis

In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...