相关实验视频

Updated: Jan 8, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

在MoSe₂纳米花中的空缺工程:通过等离子体介导的缺陷激活解锁高速和持久的储存

Yi Feng¹, Zhi-Yuan Song¹, Yuan-Na Zhu¹

¹School of Materials Science and Engineering, University of Jinan, 250022, Jinan, China. mse_fanll@ujn.edu.cn.

Dalton transactions (Cambridge, England : 2003)

|December 22, 2025

概括

在二化物 (MoSe2) 中的缺陷工程产生空缺,提高离子电池的性能. 这一策略使得可持续能源系统中的高容量,快速的储存成为可能.

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:

可充电离子电池 (KIB) 是离子电池的可持续替代品.
由于K+离子的大小,KIB需要高性能电极材料.
二化 (MoSe2) 是一种具有K+储存潜力的分层材料.

研究的目的:

开发一个缺陷工程策略来激活MoSe2基底层,以增强K+存储.
研究空缺 (VSe) 在改善MoSe2电化学性能的作用.
为了阐明缺陷工程MoSe2.2中的储存机制.

主要方法:

通过等离子介导的排放蚀刻将在MoSe2.2中引入受控的空缺.
电化学特性 (容量,速度能力,循环稳定性).
材料表征 (现场XRD,现场XPS/TEM) 和密度功能理论 (DFT) 的计算.

主要成果:

优化的VSe-MoSe2表现出更窄的带隙 (0.38 eV) 和增强的电子导电性.
缺陷工程创造了多维的K+扩散途径,并增强了伪容量贡献.
最佳电极显示高可逆容量 (286.2 mAh g-1 在1 A g-1) 和优异的速率能力 (134.9 mAh g-1 在5 A g-1).

结论:

空隙极大地稳定了MoSe2结构,并促进了快速的K+吸附.
缺陷工程的MoSe2为持久,高速率的储存提供了一个有希望的途径.
这种方法突出了先进电池的层叠过渡金属二二二二中精确设计的缺陷的潜力.

更多相关视频

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

Monitoring Protein Adsorption with Solid-state Nanopores

Monitoring Protein Adsorption with Solid-state Nanopores

Published on: December 2, 2011

相关概念视频

MOSFET: Enhancement Mode

MOSFET: 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...

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...

MOSFET: Depletion Mode

MOSFET: Depletion Mode

Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...