相关实验视频

Updated: Jan 15, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

层次化的CoNi₂S₄/C空心纳米球作为高性能离子电池的阳极材料

Dewei Liang¹, Yan Wang¹, Zhubo Chu¹

¹School of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, People's Republic of China.

ACS applied materials & interfaces

|October 14, 2025

概括

这项研究引入了CoNi2S4/C空心纳米球作为离子电池的先进阳极材料. 与纳米粒子相比,这些新型结构显著提高了储能和循环稳定性.

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
纳米技术纳米技术

背景情况:

过渡金属硫化物是离子电池的阳极材料,由于其高容量和成本效益.
挑战包括缓慢的动力学和体积膨胀,限制了实际应用.
开发先进的结构对于克服这些局限性至关重要.

研究的目的:

为增强的离子电池阳极合成和表征一种新的CoNi2S4/C空心纳米球复合材料.
为了研究空心纳米圈结构对电化学性能的影响.
阐明界面效应在改善储存中的作用.

主要方法:

一步溶解热合成CoNi2S4/C空心纳米球.
电化学测试包括容量,速率能力和循环稳定性.
密度函数理论 (DFT) 计算以研究接口属性.

主要成果:

CoNi2S4/C空洞纳米圈在0.1 A g-1.0下表现出649.5 mAh g-1的高容量.
观察到卓越的循环稳定性,在1000个循环后保持495.5 mAh g-1在10.0 A g-1.
由于界面双极效应,DFT的计算证实了增强的电子转移和优先的Na+吸附.

结论:

CoNi2S4/C 的空洞纳米圈结构显著提高了离子储存性能.
界面双极效应在促进快速离子和电子转移方面发挥着关键作用.
这项工作为开发用于离子电池的高性能双金属硫化阳极提出了有前途的战略.

关键词:

在 CoNi2S4S4 中.阳极材料是一种阳极材料.这是一个复合材料.空洞的纳米球体是空洞的.离子电池离子电池

更多相关视频

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

Construction and Testing of Coin Cells of Lithium Ion Batteries

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

相关概念视频

Ionic Crystal Structures

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

Batteries and Fuel Cells

Batteries and Fuel Cells

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...