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在高能量密度超级电容器的基材料中多功能硫化

Li Huang¹, Pengkun Wang¹, Hechuan Yang¹

¹School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China.

|March 12, 2024

概括

硫和核心外结构显著提高了铜氧化物 (CCO) 电极的电化学性能. 这种增强导致超级电容器具有更高的特定电容和更高的能量密度.

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:

开发先进的电极材料对于高性能储能设备至关重要.
核心外结构和兴奋剂策略为增强材料性能提供了有希望的途径.

研究的目的:

为了合成含硫的CCO@Co(OH) 2核心外纳米结构 (S-CCO@Co(OH) 2).
调查硫和3D核心外架构对电化学性能的协同效应.
评估S-CCO@Co(OH) 2作为超级电容器的电极材料的潜力.

主要方法:

热水合成,其次是电解.
材料结构,组成和电化学性质的表征.
使用S-CCO@Co(OH) 2电极制造和测试超级电容器设备.

主要成果:

硫注射导致Cu2+和Co3+降低为Cu+和Co2+,并产生氧气空缺.
在外和核心之间形成S-Co键便于电子和离子运输.
S-CCO@Co(OH) 2的特定电容为1730 Fg-1,是CCO的4.28倍.
组装后的超级电容器在5000个循环后实现了83.89 Whkg-1的能量密度和98.48%的电容保留.

结论:

硫和核心外结构的组合显著提高了基于CCO的材料的电化学性能.
在高性能超级电容应用中,S-CCO@Co(OH) 2显示出极好的潜力.
硫和核心外结构之间的协同效应是改善电化学活性的关键.

关键词:

这就是S兴奋剂.核心外结构核心外结构缺陷工程是什么?缺陷工程是什么?这是一个多功能多功能.

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