Recent advances in Ni-materials/carbon nanocomposites for supercapacitor electrodes

Pour, Ghobad Behzadi; Fard, Hamed Nazarpour; Aval, Leila Fekri; Dubal, Deepak

doi:10.1039/d3ma00609c

Cited by 7 publications

(2 citation statements)

References 217 publications

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“…The combustion of fossil fuels and the resulting emission of pollutants have prompted scientists worldwide to seek alternative energy storage methods, such as clean electrochemical systems [1][2][3]. Extensive research and development have focused on emerging energy storage technologies, including supercapacitors [4], fuel cells [5], secondary batteries (such as Li, Na, K, and Li-S batteries) [6][7][8][9], and dual-battery systems for renewable energy generation [10].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, in comparison to secondary batteries, it may provide extremely high power densities; at the same time, the longer cycle stability and higher energy density are additional appealing advantages [1,2]. An essential component of SCs is the electrode material, whose composition, structure, and shape all have a direct impact on its electrochemical characteristics [3]. To ensure the optimal performance of supercapacitors, the electrode material must exhibit various essential qualities, such as a large specific surface area, high electrical conductivity, rapid ion transportation, and exceptional electrochemical stability [1].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Energy Storage Performance through Controlled Composition and Synthesis of 3D Mixed Metal-Oxide Microspheres

Su,

Hilal,

Yang

et al. 2024

Nanomaterials

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Binary transition metal oxide complexes (BTMOCs) in three-dimensional (3D) layered structures show great promise as electrodes for supercapacitors (SCs) due to their diverse oxidation states, which contribute to high specific capacitance. However, the synthesis of BTMOCs with 3D structures remains challenging yet crucial for their application. In this study, we present a novel approach utilizing a single-step hydrothermal technique to fabricate flower-shaped microspheres composed of a NiCo-based complex. Each microsphere consists of nanosheets with a mesoporous structure, enhancing the specific surface area to 23.66 m2 g−1 and facilitating efficient redox reactions. When employed as the working electrode for supercapacitors, the composite exhibits remarkable specific capacitance, achieving 888.8 F g−1 at 1 A g−1. Furthermore, it demonstrates notable electrochemical stability, retaining 52.08% capacitance after 10,000 cycles, and offers a high-power density of 225 W·kg−1, along with an energy density of 25 Wh·kg−1, showcasing its potential for energy storage applications. Additionally, an aqueous asymmetric supercapacitor (ASC) was assembled using NiCo microspheres-based complex and activated carbon (AC). Remarkably, the NiCo microspheres complex/AC configuration delivers a high specific capacitance of 250 F g−1 at 1 A g−1, with a high energy density of 88 Wh kg−1, for a power density of 800 W kg−1. The ASC also exhibits excellent long-term cyclability with 69% retention over 10,000 charge–discharge cycles. Furthermore, a series of two ASC devices demonstrated the capability to power commercial blue LEDs for a duration of at least 40 s. The simplicity of the synthesis process and the exceptional performance exhibited by the developed electrode materials hold considerable promise for applications in energy storage.

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