相关实验视频

Updated: Jan 14, 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

Co₂O₄@多孔石墨烯气凝:用于增强聚硫化物转换的协同吸附催化剂

Yunfeng Lu¹, Xuelin Huang¹, Ruikang Zuo¹

¹National Base for International Science & Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion, School of Chemistry, Xiangtan University, Xiangtan 411105, China.

ACS applied materials & interfaces

|October 20, 2025

概括

这项研究开发了一种新的NiCo2O4@rGA材料,通过加速聚硫化物转化来提高硫电池的性能. 新的阴极材料显著提高了容量保留和循环稳定性,用于商业化.

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:

硫电池 (LSB) 在商业化方面面临着挑战,原因是聚硫化物.
过渡金属氧化物和多孔碳材料为LSB提供协同效应.

研究的目的:

开发一个层次的NiCo2O4@rGA材料,用于LSB中的聚硫化物加速催化转化.
调查NiCo2O4加载对LSB电化学性能的影响.

主要方法:

采用联合生长策略,将NiCo2O4在减少的氧化石墨烯气凝 (rGA) 上.
合成的NiCo2O4@rGA材料以其表面积和电化学特性而闻名.
现场紫外线光谱法用于确认聚硫化物的催化转化.

主要成果:

与rGA (133 m2 g-1) 相比,NiCo2O4@rGA材料具有更高的特定表面积 (226 m2 g-1).
该NCO@rGA-13/S阴极在1°C下提供了1112 mAh g-1的初始排放特异容量,在500个循环后保留了722 mAh g-1.
现场紫外线光谱学证实了用NiCo2O4@rGA加速的聚硫化物转化.

结论:

层次的NiCo2O4@rGA材料有效地促进了聚硫化物的双重吸附和催化转化.
这一战略有利于提高周期性绩效,并促进小额银行产业化.

关键词:

转换的多硫化物.- 硫电池的使用情况.极地金属氧化物极地金属氧化物减少的石墨烯氧化物气凝三维多孔碳的三维多孔碳.

更多相关视频

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle

Published on: September 22, 2015

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.