对于全固态硫电池,具有离子-电子双载体运输和催化活性的集成硫主机
Jianlong Ding1, Xiaomin Cai1, 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.
Small (Weinheim an der Bergstrasse, Germany)
|May 16, 2025
概括
这项研究引入了一种全固态硫电池 (ASSLSB) 的新型集成硫宿主. 该设计增强了离子和电子传输,提高了电池性能和稳定性,用于下一代能源存储.
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:
- 全固态硫电池 (ASSLSBs) 提供高能量密度和安全性,但受到阴极传输不良和高接口电阻的影响.
- 这些局限性导致当前ASSLSB设计中的低效硫利用率和低于最佳速率性能.
研究的目的:
- 开发一个集成的硫宿主策略,以改善ASSLSB中的固态氧化还原反应.
- 增强离子和电子运输,催化活性和界面稳定性,以提高电池性能.
主要方法:
- 制造碳化聚烯二涂层Zr-doped兰氧化 (ZLLTO) 纳米纤维 (cZLLTO NFs) 具有核心外结构.
- 通过现场聚合,构建一个集成的cZLLTO@S阴极和基于ZLLTO的复合体固体电解质.
- 组装和电化学测试ASSLSB设备.
主要成果:
- cZLLTO NFs提供了高效的离子电子双载体运输和催化活动.
- 在现场的聚合制造产生了稳定的电解质/电极介面相,减少了接口电阻.
- 组装后的ASSLSB显示了高初始放电容量 (1016 mAh g-1 在0.1C),优异的速率能力 (686 mAh g-1 在4C) 和持续的循环稳定性 (81.2%在500个循环后保持).
结论:
- 拟议的综合硫主机设计有效地解决了ASSLSBs的关键挑战.
- 这一策略显著提高了硫的利用率,速度性能和循环寿命.
- 这些发现为推进高性能ASSLSB技术提供了宝贵的见解.
相关概念视频
Batteries and Fuel Cells
26.8K
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...
26.8K
Preparation and Reactions of Sulfides
4.7K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.7K
Formation of Complex Ions
23.0K
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...
23.0K
Ionic Bonding and Electron Transfer
39.9K
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.
39.9K


