电子配置调制诱导稳定1T-MoS2用于增强的离子存储
Yuxiang Zhang1, Jiantao Li2, Xintong Li3
1Faculty of Materials Science and Chemistry, China University of Geosciences (Wuhan), Wuhan, Hubei 430074, China.
Nano letters
|March 8, 2024
概括
研究人员为离子电池 (SIB) 开发了稳定的1T--二硫化物 (1T-Ni-MoS2). 这种新的阳极材料提高了导电性和电化学性能,对储能应用有很大的前景.
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:
- 1T-二硫化物 (1T-MoS2) 是离子电池 (SIB) 的理想阳极.
- 1T-MoS2的转移稳定性阻碍了直接合成,导致相变为电导性较低的2H相,降低了电池性能.
- 1T-MoS2层的重叠进一步降低了它的电化学效率.
研究的目的:
- 为了合成适合SIB阳极的稳定1T-MoS2相.
- 通过材料修饰来增强基于MoS2的阳极的电化学性能.
- 研究一种新型阳极材料在高性能离子电池中的潜力.
主要方法:
- 通过引入 (Ni) 来调节 (Mo) 4d轨道的电子配置.
- 通过Ni兴奋剂构建一个稳定的1T-Ni-MoS2阶段.
- 合成和鉴定1T-Ni-MoS2材料的特征.
- 评估1T-Ni-MoS2作为SIB和全电池中阳极的电化学性能.
主要成果:
- 的引入成功地稳定了MoS2的1T相,防止其转化为2H相.
- 尼的电子注入改变了Mo 4d轨道配置,改善了电导率和氧化还原动力学.
- 1T-Ni-MoS2表现出优越的速率能力 (266.8 mAh g-1 在 10 A g-1) 和优秀的周期寿命 (358.7 mAh g-1 在 1 A g-1 在 350 个循环后).
- Na3V2 ((PO4) 3 / C 基底1T-Ni-MoS2 完整电池表现出卓越的电化学特性.
结论:
- 开发的1T-Ni-MoS2是离子电池的高度稳定和高效的阳极材料.
- 兴奋剂是一种有效的策略,可以稳定MoS2的1T阶段,并提高其电化学性能.
- 这种材料对先进的储能器件具有显著的前景.
更多相关视频
11:33All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
9.6K
08:53Synthesizing Sodium Tungstate and Sodium Molybdate Microcapsules via Bacterial Mineral Excretion
Published on: January 30, 2018
8.6K
相关概念视频
MOS Capacitor
779
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...
779
Electron Configuration of Multielectron Atoms
41.0K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
41.0K
Ionic Bonding and Electron Transfer
41.5K
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.
41.5K
Molecular Orbital Theory II
19.2K
Molecular Orbital Energy Diagrams
19.2K
Trends in Lattice Energy: Ion Size and Charge
23.9K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
23.9K
MOSFET: Enhancement Mode
335
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...
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...
335
