相关实验视频

Updated: Apr 13, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

将CoP/Co异构连接集成到添加碳多面体中作为电催化剂,以促进硫电池中的多硫化物转化

Haiyang Xing¹, Kai Zhang¹, Rui Chang¹

¹Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China; Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi'an Jiaotong University, Xi'an 710049, China.

Journal of colloid and interface science

|August 14, 2024

概括

研究人员开发了一种新的CoP/Co@NC/CNT材料,以提高硫 (Li-S) 电池的性能. 这种先进的宿主材料增强了下一代储能能源的能量密度和循环稳定性.

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
储能储能储能储能储能储能

背景情况:

硫 (Li-S) 电池具有较高的理论能量密度,但其动力学不佳,多硫化物穿和周期寿命有限.
这些挑战阻碍了Li-S电池的实际应用,尽管它们具有巨大的潜力.

研究的目的:

设计和合成用于Li-S电池的多功能主体材料.
为了解决缓慢反应动力学和聚硫化物穿的局限性.

主要方法:

制造一个COP/Co@NC/CNT异构宿主材料.
整合了CoP/Co异质连接,N-doped碳空心多面体 (NC) 和碳纳米管 (CNT).

主要成果:

CoP/Co异构连接显示出协同效应,增强吸附和催化活性.
植入CNT的NC促进了快速的电子/离子运输,并限制了聚硫化物扩散.
由此产生的阴极实现了高放电容量 (1479.9 mAh g^{-1 在0.1C) 和优异的容量保留 (793.7 mAh g^{-1 在2C超过500个周期,约85.5%).}}

结论:

设计的CoP/Co@NC/CNT异构结构有效地促进Li-S电池中的硫氧化还原动力学.
这种多功能材料为开发高效纳米复合材料电催化剂提供了一个有前途的战略,用于先进的能量存储.

关键词:

碳中空多面体的多面体合作伙伴合作伙伴在 CoP 和 CoP 之间.异质连接异质连接异质连接这种电池是Li-S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

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

相关概念视频

Catalysis

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.