相关实验视频

Updated: Jun 28, 2025

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

可重建的碳单层MoS₂交叠的异构结构,通过原子层限制的拓变换实现超快速存储

Kexuan Liao^1,2, Lu Chen^1,2, Ruijin Meng³

¹School of Chemical Science and Engineering, Tongji University, Shanghai 200092, P. R. China.

Journal of the American Chemical Society

|April 23, 2024

概括

这项研究引入了用于离子电池 (LIB) 的新型可重建阳极材料,该材料可以在快速充电过程中克服结构降解. 这种MoS₂/g-CM异构结构表现出异常的速率能力和长期稳定性.

科学领域:

材料科学
电化学
纳米技术

背景情况:

两维材料中的间隔结构可增强快充离子电池 (LIB) 的质量传输.
这些材料在工作条件下的结构不稳定性和粉碎性限制了电池的性能和寿命.

研究的目的:

为高性能LIB开发稳定且可重建的阳极材料.
研究一种聚合物合策略,以创建强大的异构结构.

主要方法:

通过聚合物间隔合成N-doped石墨烯样碳单层 (g-CM) 间的MoS₂ (MoS₂/g-CM) 异构结构.
使用现场/现场表征来阐明"碳单层限制的拓变化"机制.
在LIB中测试MoS₂/g-CM阳极的电化学性能.

主要成果:

在电池循环过程中,MoS₂/g-CM异构结构具有可逆重建性.
实现了前所未有的50Ag-1的速度,具有出色的长周期性.
通过将其扩展到MoSe₂来证明g-CM插入策略的多功能性,也产生可重建的异构结构和改进的LIB性能.

结论:

开发的"碳单层限制的拓变化"机制使极能够自我修复和结构完整.
可重建的MoS₂/g-CM异构结构为高性能,持久的LIB提供了一个有前途的解决方案.
采用g-CM的合策略为设计先进的储能材料提供了一种多功能方法.

更多相关视频

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Published on: January 20, 2023

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

Published on: February 5, 2019

相关概念视频

MOS Capacitor

MOS Capacitor

A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...