普鲁士蓝色模拟衍生的空心金属氧化物异构结构用于高性能超级电容器
Hui Ju1,2, Qianqian Tang1, Yong Xu1
1College of Chemistry and Chemical Engineering, Mianyang Teachers' College, Mianyang, 621900, China. liushuxin88@126.com.
Dalton transactions (Cambridge, England : 2003)
|August 30, 2023
概括
研究人员为超级电容器 (SC) 开发了新的三元空心金属氧化物异构结构. 这些先进的电极材料表现出增强的特定电容和特殊的循环稳定性,为改进的能量存储设备铺平了道路.
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:
- 超级电容器 (SC) 是重要的储能装置,其性能严重依赖电极材料.
- 来自普鲁士蓝色类似物 (PBA) 的金属氧化物是SC电极的有希望的候选者.
- 开发新的电极架构是推进SC技术的关键.
研究的目的:
- 使用多步骤策略制造三元空心金属氧化物 (CuO/NiO/Co3O4) 异构结构.
- 为了研究合成的CuO/NiO/Co3O4材料作为SCs的电极的电化学性能.
- 探索这些异构结构在高性能储能应用中的潜力.
主要方法:
- 通过晶体种子方法合成的核心外结构PBA (NiHCC@CuHCC).
- 通过化PBA前体获得的三元空心金属氧化物 (CuO/NiO/Co3O4).
- 使用两电极系统用基合石墨烯水凝 (NDGH) 进行电化学表征.
主要成果:
- 制造的CuO/NiO/Co3O4的特异电容为262.5Fg-1在1Ag-1上,表现优于二进制对应物.
- 观察到出色的循环稳定性,在3000个循环后保持了107.9%的电容.
- 一个两电极的SC装置在1037.5W kg-1时达到27.1W h kg-1的高能量密度,在4000个循环后保持100.7%.
结论:
- CuO/NiO异质连接,空心结构和各种金属氧化物的协同作用有助于优异的电化学性能.
- 开发的制造战略为设计先进的SC电极提供了一个有前途的途径.
- 这些发现激发了高性能超级电容电极的构建.
更多相关视频
08:59Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
Published on: November 30, 2022
4.5K
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
2.0K
相关概念视频
01:25MOS Capacitor
833
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...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
833
01:18Capacitor With A Dielectric
4.0K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.0K