NiO nanolayer electrodeposited with Cobalt and Phosphide as a novel supercapacitor with high areal capacitance

IF 4.3 3区 材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Ioannis A. Poimenidis , Panagiotis A. Loukakos , Michalis Konsolakis
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Abstract

In the present work, a novel supercapacitor electrode is fabricated via a two-step synthesis procedure. A NiO nanolayer was initially fabricated on a nickel foam electrode using hydrothermal synthesis to obtain a substrate with a high electrocatalytic area and good adhesive properties. Subsequently, the NiO-decorated nickel foam (NF) was employed as a substrate for the electrodeposition of cobalt and phosphorous. Morphological, structural, and surface characterization, along with various electrochemical tests, were conducted to gain insight into structure-property relationships. The as-prepared electrode (CoP@NF) exhibited excellent electrochemical behavior with an ultra-high areal capacitance of 3340 mF cm−2 at 5 mA cm−2 and high capacitance values even at high current densities. The exceptional electrochemical behavior can be attributed to the morphological and electronic modifications induced by aliovalent doping and the synergetic effect between the different electrode counterparts.

Abstract Image

电沉积有钴和磷化物的 NiO 纳米层作为具有高电容值的新型超级电容器
本研究采用两步合成法制作了一种新型超级电容器电极。首先利用水热合成法在泡沫镍电极上制造出氧化镍纳米层,以获得具有高电催化面积和良好粘合性能的基底。随后,将镍氧化物装饰的泡沫镍(NF)用作电沉积钴和磷的基底。通过形态、结构和表面表征以及各种电化学测试,深入了解了结构与性能之间的关系。制备出的电极(CoP@NF)表现出卓越的电化学性能,在 5 mA cm-2 电流条件下具有 3340 mF cm-2 的超高面积电容,即使在高电流密度条件下也具有很高的电容值。这种优异的电化学行为可归因于异价掺杂引起的形态和电子修饰以及不同电极对应物之间的协同效应。
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来源期刊
Journal of Physics and Chemistry of Solids
Journal of Physics and Chemistry of Solids 工程技术-化学综合
CiteScore
7.80
自引率
2.50%
发文量
605
审稿时长
40 days
期刊介绍: The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.
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