Comparative study of electrochemical supercapacitor performance Among various nickel phases: Hydroxide, oxide, and sulfide

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-06-01 DOI:10.1016/j.ceramint.2025.02.229

Sreenivasa Kumar Godlaveeti , Adel El-marghany , Ramamanohar Reddy Nagireddy , Sreedevi Gedi , Rajababu Chintaparty

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Abstract

The unique electrochemical properties of metal sulfides have made them highly attractive for use in supercapacitor technologies. This study focuses on the electrochemical behaviour of nickel-based materials namely nickel hydroxide (β-Ni(OH)₂), nickel oxide (NiO), and nickel sulfide (NiS) synthesized via a simple hydrothermal approach. Structural analysis was performed using X-ray diffraction (XRD), while field emission scanning electron microscopy (FE-SEM), field emission transmission electron microscopy (FE-TEM) and energy-dispersive X-ray spectroscopy (EDAX) provided insights into the morphology and elemental composition of each material. The surface area, pore volume and pore diameter were calculated from Brunauer Emmett Teller (BET) instrument. The electrochemical performance of these synthesized compounds was tested in supercapacitor applications through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), electrochemical impedance spectroscopy (EIS) and stability performance in a three-electrode system. Notably, NiS outperformed other nickel phases, achieving a specific capacitance of approximately 1066 F/g at a current density of 5 A/g in a 3 M KOH electrolyte. The findings highlight the potential advantages of metal sulfides over metal oxides and hydroxides in supercapacitor applications, attributed to their higher conductivity and electrochemical activity, making metal sulfides highly promising for energy storage solutions.

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电化学超级电容器在不同镍相：氢氧化物、氧化物和硫化物中的性能比较研究

金属硫化物独特的电化学性能使其在超级电容器技术中的应用具有很高的吸引力。本研究主要研究了通过简单的水热法合成的镍基材料氢氧化镍（β-Ni(OH)2）、氧化镍（NiO）和硫化镍（NiS）的电化学行为。使用x射线衍射（XRD）进行结构分析，而场发射扫描电子显微镜（FE-SEM），场发射透射电子显微镜（FE-TEM）和能量色散x射线光谱（EDAX）提供了每种材料的形态和元素组成的见解。采用布鲁诺尔-埃米特-泰勒（BET）仪计算比表面积、孔隙体积和孔径。通过循环伏安法（CV）、恒流充放电法（GCD）、电化学阻抗谱法（EIS）和三电极体系稳定性测试了合成化合物在超级电容器中的电化学性能。值得注意的是，NiS优于其他镍相，在3 M KOH电解液中，在电流密度为5 a /g时达到约1066 F/g的比电容。这一发现突出了金属硫化物在超级电容器应用中相对于金属氧化物和氢氧化物的潜在优势，因为它们具有更高的导电性和电化学活性，使得金属硫化物在储能解决方案中非常有前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.