炭石衍生的多孔碳@MoS2 异构结构用于由中间TiO2层调节的升高储存
Jie Sun1, Cheng Tang2, Haitao Li1
1School of Environmental and Chemical Engineering, Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, P. R. China.
ChemSusChem
|August 14, 2024
概括
一种新型的三元复合物 - - 炭酸衍生的多孔碳@二氧化@二硫化 (APC@TiO2@MoS2) - - 增强了的储存. 这种设计改善了离子/电子传输和稳定性,提供了一个有前途的低成本阳极材料.
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:
- 二硫化物 (MoS2) /碳复合材料被探索用于储存.
- 挑战包括缓慢的动力学和弱的MoS2-碳结合,限制了实际应用.
研究的目的:
- 为改进储存开发一种新的三元复合材料.
- 为了解决动力限制和增强基于MoS2的阳极的结构稳定性.
主要方法:
- 用TiO2纳米颗粒和MoS2纳米薄膜对由炭酸盐衍生的多孔碳 (APC) 进行序列涂层.
- 使用化学激活和双步热水法.
- 使用动态分析,现场电化学阻抗光谱和理论计算.
主要成果:
- 该APC@TiO2@MoS2复合材料显示了增强的离子/电子传输和减轻体积膨胀.
- TiO2中间层显著提高了机械稳定性.
- 在150个循环后,在200 mA g-1.1下达到655.8 mAh g-1的可逆容量.
- 在1100个循环后,在2 A g-1.1下维持了597.7 mAh g-1.
结论:
- 该APC@TiO2@MoS2三元复合材料提供卓越的存性能和循环稳定性.
- 合理的设计有效地克服了基于MoS2的阳极的局限性.
- 突出了低成本的炭酸盐衍生的多孔碳对先进的储能电极的潜力.
相关概念视频
01:25MOS 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...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
01:22MOSFET: Enhancement Mode
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...