相关实验视频

Updated: Jul 23, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

增强容量保留Li₃V₂(PO₄)₃-以阴极为基础的金属电池使用SiO₂-作为混合固态电解质的架构封闭的离子液体

Shihao Peng¹, Jiakun Luo¹, Wenwen Liu¹

¹College of Physical Science and Engineering Technology, Yichun University, Yichun 336000, China.

Molecules (Basel, Switzerland)

|July 14, 2023

概括

一种新的混合固态电解质通过防止树的生长和副作用反应来提高金属电池的性能. 这种材料使Li3V2(PO4) 3阴极在高电压下能够稳定运行.

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:

金属电池 (LMB) 提供高能量密度,但面临着阴极材料稳定性和树形成的挑战.
由于其高电压和容量,Li3V2(PO4) 3 (LVP) 是一个有前途的阴极材料,但会与液体电解质产生副作用.
不受控制的二增长会损害LMB的安全性和周期寿命.

研究的目的:

为高压LMB开发混合固态电解质 (HSSE).
提高基于LVP的LMB的自行车稳定性和安全性.
为了解决高能量密度电池系统中液态电解质的局限性.

主要方法:

通过将含的离子液体限制在半孔SiO2支架内制造HSSE.
对HSSE的电化学表征,包括离子导电性和电化学窗口测量.
组装和测试基于LVP阴极的LMB,使用HSSE和常规液体电解质进行比较.

主要成果:

高电传导器显示出高的离子导电性 (3.14 × 10^-4 S cm^-1 在30°C) 和一个宽的电化学窗口 (~5V).
与液体电解质电池相比,带有HSSE的LMB显示出高达4.8V的稳定运行,具有优异的容量保留 (>100个周期).
HSSE有效地抑制了树状石的形成,并且与LVP阴极具有良好的兼容性.

结论:

开发的HSSE是一种可行的替代液体电解质,用于高性能LMB.
这种混合电解质系统显著提高了基于LVP的金属电池的稳定性和安全性.
这项研究提出了利用高压阴极材料在下一代储能设备中的有希望的策略.

关键词:

Li3V2(PO4)3 的使用情况.骑自行车表现的表现金属电池是金属电池的一种.固态电解质固态电解质

更多相关视频

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Published on: March 7, 2018

相关概念视频

Formation of Complex Ions

Formation of Complex Ions

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...

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.