提高由陶纳米线填充剂诱导的聚合物电解质的离子导电性,其中含有丰富的空缺
Jianlong Ding1, Wenqiang Wang1, Yifan Zhang1
1Shanghai Engineering Research Center of Hierarchical Nanomaterials, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China. wangwenqiang@ecust.edu.cn.
Physical chemistry chemical physics : PCCP
|February 5, 2024
概括
这项研究引入了用于聚合物电解质的新型陶纳米线,显著提高了离子导电性和机械强度. 这些增强的电解质使高性能全固态硫电池具有更好的容量和寿命.
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
- 聚合物科学 聚合物科学
背景情况:
- 陶填充剂增强了聚合物电解质的离子导电性.
- 颗粒填充剂往往缺乏连续通路和增强.
- 开发先进的固态电解质对于电池技术至关重要.
研究的目的:
- 开发一种新的陶纳米线填充剂,用于基于聚乙烯氧化物的聚合物电解质.
- 为了提高离子导电性,机械强度和离子传输.
- 为了提高全固态硫电池的性能.
主要方法:
- 合成中氧化 (LLZO) 纳米线使用sol-gel电.
- 多步烧结工艺,包括先氧化,先烧结和二次烧结.
- 在LLZO纳米线 (TALLZO NWs) 中进行-联合化,以创造空缺.
主要成果:
- 高面比的TALLZO NWs实现了复合电解质拉伸强度为6.87MPa.
- 塔尔佐 (TALLZO) NWs 呈现出丰富的空缺,增强了易斯的酸特性.
- 实现了0.79的高Li+转移数和3.80 × 10-4 S cm-1的离子导电性.
- 组装的全固态硫电池显示了776mAhg-1初始放电容量.
- 在0.1C的200个循环后,表现出极好的循环性能,容量保持率为81%.
结论:
- 纳米结构的修改和 heteroatom 协同兴奋剂协同增强电解质特性.
- 开发的TALLZO NWs是高性能聚合物电解质的有效填充剂.
- 这项工作为先进的固态电池铺平了道路,提高了安全性和能量密度.
更多相关视频
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.0K
06:34Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
Published on: September 19, 2020
5.8K
相关概念视频
03:45Formation of Complex Ions
18.8K
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...
18.8K
01:09Colloidal precipitates
5.7K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
5.7K